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{{Ratings}}
{{Status|Canon}}
{{Era|H2|H3|H3R|GOO|HE|HGN|UP}}
{{disambig header|the major battle at the end of the [[Human-Covenant War]]|smaller conflicts during the [[post-war era]]|Battle of Earth (disambiguation)}}
{{Triple battle infobox
{{Battle infobox
|name    = Battle of Earth
|name    = Battle for Earth
|image    = [[Image:H2 Forerunner Ship Second Battle of Earth.jpg|300px]]
|image    = [[File:Battle for Earth compilation.png|300px]]<br>Clockwise from top left: The [[Fleet of Sacred Consecration]] above the [[European Union]]; [[Alpha-Five]] dropping into [[Mombasa]]; [[John-117]] supposedly at the [[Second Battle of New Mombasa]]; a {{Pattern|Ket|battlecruiser}} over [[Cleveland]]; a [[Phantom]] reinforcing the Covenant in [[Sector Six]]; John-117 and [[Thel 'Vadam]] watch as ''[[Indulgence of Conviction]]'' crash lands into [[Voi]].
|prev    = [[Operation: FIRST STRIKE]]
|prev    = *[[Fall of Reach]] {{c|[[Siege of the Inner Colonies]]}}
|conc    = [[Battle of Installation 05]], [[First Battle of High Charity]], [[Battle of Onyx]], [[Battle of Mare Erythraeum]]
*[[Operation: FIRST STRIKE]] {{c|[[John-117]]}}
|next    = [[Battle of Installation 00]]
*[[Battle of October 10]] {{c|[[Sol system]]}}
|conflict = [[Human-Covenant War]]
|conc    = *[[Battle of Installation 05]]
|date    = October 20, 2552 - November 17, 2552
**[[Fall of High Charity]]
|place    = [[Earth]], [[Sol System]]
*[[Onyx Conflict]]
|result  = UNSC Tactical Victory
*[[Battle of Mare Erythraeum]]
*UNSC successfully prevent all of Earth from being glassed, at the cost of large portions of Africa being glassed and a significant reduction of the [[UNSC Home Fleet]].
*[[Skirmish on Mona Lisa]] {{c|isolated engagement}}
Covenant Loyalist Strategic Victory
*[[Battle of Luna]]
*Covenant Loyalists successfully uncover the Portal to the Ark and occupy Earth for a period of time, seriously damaging its infrastructure and eventually making a successful retreat through the Portal.
|next    = *[[Battle of Installation 00]]
*Presumed heavy reduction of Earth's human population.
*[[Operation: SUNSPEAR]] {{c|Post-War}}
|side1=[[UNSC]]/[[Covenant Separatists]]
|conflict = *[[Human-Covenant War]]
|side2=[[Covenant Loyalists]] <small>(Post-Great Schism)</small>
**[[Siege of the Inner Colonies]]
|side3=[[Flood]]
*[[Great Schism]]
|commanders1=
|date    = [[2552#October|October 20, 2552]]{{Ref/Site|Id=bungie|D=01|M=6|Y=2020|URL=http://halo.bungie.net/News/content.aspx?type=topnews&cid=16989|Site=bungie.net|Page=Bungie Weekly Update 01/23/09}}{{Ref/Reuse|lootcrate2}} – c. [[2552#December|December 3, 2552]]{{Ref/Note|Id=battleend|While no official date has been given to the end of the Battle for Earth, the currently last known engagement during the battle, the [[Operation: MARSH FLASH]] in [[Arizona]], took place on December 3, although it's still possible that other engagements on some other countries or continents was still occuring after the [[URNA Southwest Campaign]] ended.}}{{Ref/Reuse|lootcrate2}}
*[[Fleet Admiral]] [[Terrence Hood]]  
|place    = [[Earth]], [[Sol system]]
|result  = '''[[UEG]]/[[Fleet of Retribution]] victory'''
*Covenant invasion successfully repelled; most surviving forces flee to [[Installation 00]]
*Earth brutally [[orbital bombardment|bombarded]]{{Ref/Reuse|Id=H3CN}} but full [[glassing]] averted; parts of [[Africa]] are, including in the excavation of the [[Portal at Voi]]
*Catastrophic reduction of Earth's population{{Ref/Reuse|Id=bestiarum}} and majority of cities destroyed{{Ref/Reuse|Id=HUI1}}
*Local Flood infestation contained{{Ref/Reuse|Id=H3Flood}}
|side1 = *{{Icon|UEG}} [[Unified Earth Government|UEG]]
**{{Icon|UNSC HCW}} [[United Nations Space Command|UNSC]]
***{{Icon|Army}} [[UNSC Army]]
***{{Icon|Navy}} [[UNSC Navy]]
***[[UNSC Marine Corps]]
***[[UNSC Air Force]]
**{{Icon|NMPD}} [[New Mombasa Police Department|NMPD]]
**[[Civilian]] militias
***[[Spartan 1.1 faction]]
----
Post-Great Schism:
*{{Icon|Covenant FB}} [[Covenant separatists]] {{C|from [[2552#November|November 3, 2552]] onwards}}
**[[Fleet of Retribution]]
|side2 = *{{Icon|Covenant FB}} [[Covenant]]
**[[Covenant military]]
***[[Covenant fleet]]
|side3 = *[[Flood]] {{c|briefly on November 17}}
|commanders1 =
*[[Secretary of Defense|SOD]] [[Paul Huphy Russel]]
*[[Fleet Admiral|FADM]] [[Terrence Hood]]
*[[Fleet Admiral|FADM]] [[Joseph Harper]]
*[[Major General|MAJ GEN]] [[Nicolas Strauss]]
*[[Admiral|ADM]] [[I. Zhou]]
*[[Admiral|ADM]] [[Say My Name Actual]]
*[[Colonel|COL]] [[James Ackerson]]†
----
Post-Great Schism:
*[[Arbiter]] [[Thel 'Vadam]]
*[[Fleetmaster]] [[Rtas 'Vadum]]
*[[Fleetmaster]] [[Rtas 'Vadum]]
*[[Thel 'Vadamee|Thel 'Vadam]]
|commanders2 =
*Commander [[Miranda Keyes]]
Pre-Mombasa:
*Fleet Admiral [[Harper]]  
*[[Hierarchs|High]] [[Prophet of Regret]]
*[[Major General]] [[Nicolas Strauss]]
*[[Shipmaster]] [[Rhul 'Salmutee]]
|commanders2=
Post-Mombasa:
*[[High Prophet of Truth]]
*[[Hierarchs|High]] [[Prophet of Truth]]
*[[High Prophet of Regret]]
*[[Minister of Inquisition]]
|commanders3=[[Gravemind]]
*[[Shipmaster]] [[Lepidus]]
 
*[[Kaidon]] [[Thav 'Sebarim]]{{Ref/Reuse|thav}} {{c|Pre-Great Schism}}
 
|commanders3 = [[Gravemind]]
|forces1=
|forces1 =
*[[UNSC Marine Corps]]
See [[Participants in the Battle for Earth|here for details on participating forces]]
*[[UNSC Air Force]]
*300 [[orbital defense platform|ODP]]s{{Ref/Level|Id=H2TA|Game=Halo 2|Level=The Armory}}
*[[UNSC Army]]  
*[[UNSC Home Fleet|Home Fleet]]
*[[UNSC Home Fleet]]
**Virtually all the remaining fleets{{Ref/Reuse|lootcrate2}}
**300 Orbital Defense Platforms
***[[Battle Group Omicron]]
**[[Second Fleet]]
***[[Second Fleet]]{{Ref/Reuse|goo204}}
**[[Seventh Fleet]]
***[[Third Fleet]]{{Ref/Reuse|lootcrate2}}
**[[Sixteenth Fleet]]
***[[Fifth Fleet]]{{Ref/Reuse|H2CS}}
***[[Sol Defense Group 3/A-5]]
***[[Seventh Fleet]]{{Ref/Reuse|goo204}}
**[[Harper's Fleet]]
****[[Battle Group Victory]]{{Ref/Reuse|lootcrate2}}
*[[UNSC Prowler|Prowler]]s
***[[Sixth Battle Group]]
**{{UNSCShip|Dusk}}  
***[[Sixteenth Fleet]]{{Ref/Reuse|goo204}}
*[[C709 Longsword-class Interceptor|C709 ''Longsword''-class Interceptor]]s
***[[Sol Defense Group 3/A-5]]{{Ref/Reuse|landfall}}
**[[7-89]]
***[[Epsilon Eridani Fleet]] remnants
*[[Fleet of Retribution]]
****[[Battle Group Leviathan]] remnants
**''[[Shadow of Intent]]''
*Numerous military land and air ground forces
**''[[Pious Inquisitor]]'' <small>(Post-[[Great Schism]])</small>
*Numerous civilian assets{{Ref/Reuse|OSFM69}}
*Numerous [[Marine]] Divisions
----
*7th Shock Troops Battalion
Post-Great Schism:
*[[New Mombasa Police Department|NMPD]] forces
*[[Fleet of Retribution]]{{Ref/Reuse|H3Flood}}
*Armed Civilians
**1+ [[battle group]]
*Militia
*Several ground forces
*[[F99 Unmanned Combat Aerial Vehicle|F99 Wombat]]s
*[[Hornet]]s
*[[Scorpion]]s
*[[Pelican]]s
*[[Warthog]]s
*[[Mongoose]]s
 
 
|forces2=Space
*[[Regret's Fleet]]
**2 [[Assault Carrier]]s
***[[Regret's Carrier]]
**13 {{Class|CCS|Battlecruiser}}s
***[[Pious Inquisitor]] <small>(Pre-Great Schism)</small>
**[[Seraph]]s
*[[Fleet of Furious Redemption]]
*[[Truth's Fleet]]
**[[Forerunner Dreadnought]]
** At least 3 [[Assault Carriers]] and at least 27 [[CCS-class Battlecruisers]] planetside over [[Kenya]]
**''[[Bloodied Spirit]]''
**''[[Harbinger of Piety]]''
 
Ground
*[[Covenant Army]]
**[[Sangheili]]
**[[Sangheili]]
|forces2 =
See [[Participants in the Battle for Earth|here for details on participating forces]]
*[[Fleet of Sacred Consecration]] {{c|Pre-Mombasa}}
**15 ships{{Ref/Reuse|H2CS}}
*[[Covenant fleet|Multiple Covenant fleets]] {{c|Post-Mombasa}}
**[[Truth's fleet|Truth's forces]]
***One [[Truth's fleet#Battle of Mombasa|excavation fleet]]{{Ref/Reuse|waypoint}}
***Over 320 ships{{Ref/Site|Id=truthsfleet|URL=https://twitter.com/halo/status/1192836473340362753|Site=Twitter|Page=#TodayInHalo, 2552 – Aboard the Forerunner dreadnought, the Prophet of Truth arrives in our solar system with the Covenant's largest invasion force in tow and heads towards Earth. #FictionFriday|Y=2014|D=04|M=02}}  {{c|November 8}}
****[[High Charity defense fleet]] remnants{{Ref/Reuse|H2GJ}}{{Ref/Reuse|H3CN}}
**[[Fleet of Furious Redemption]]{{Ref/Reuse|HUI1}}
*Numerous ground forces
**[[Jiralhanae]]
**[[Sangheili]] {{c|Pre-Great Schism}}
**[[Mgalekgolo]]
**[[Kig-Yar]]
**[[Unggoy]]
**[[Unggoy]]
**[[Kig-Yar]]
**[[Mgalekgolo]]
**[[Yanme'e]]
**[[Yanme'e]]
**[[Jiralhanae]]
**[[Huragok]]
**[[Huragok]]
***[[Shadow]]s
|forces3 =*1 captured {{Pattern|Ket|battlecruiser}}{{Ref/Reuse|H3Flood}}
***[[Scarab]]s
*Several [[infection forms]]{{Ref/Reuse|H3Flood}}
***[[Ghost]]s
*Several [[combat forms]]{{Ref/Reuse|H3Flood}}
***[[Type-25 Assault Gun Carriage|Wraith]]s
*Several [[carrier forms]]{{Ref/Reuse|H3Flood}}
***[[Banshee]]s
*Several [[pure forms]]{{Ref/Reuse|H3Flood}}
***[[Phantom]]s
|casual1 = Extreme{{Ref/Reuse|H3CN}}
*Majority of the [[UNSC Home Fleet|Home Fleet]]{{Ref/Reuse|H3CN}}
*[[Moncton-class orbital weapon platform|2+ ODPs]]{{Ref/Reuse|H2CS}}
*Majority of ground forces
**Unknown number among the Fleet of Retribution
|casual2 =Very heavy
*Massive terrestrial and exoatmospheric losses{{Ref/Reuse|HUI4}}
**Majority of the Fleet of Sacred Consecration
|casual3 = Completely sterilized
|civilian1=Civilian losses in the billions{{Ref/Novel|Gla|Chapter=6}}
}}
{{Series/Battle/Battle for Earth}}
{{Quote|[[UNSC|We]] [[Massacre of the Outer Colonies|ran]] from them. [[Covenant|They]] [[Siege of the Inner Colonies|followed]]. We thought they'd [[Cole Protocol|never find]] [[Earth|us]]... we were wrong.|[[Cortana]]<ref>''[[Halo 2 commercial]]''</ref>}}


|forces3=
The '''Battle for Earth''',{{Ref/Reuse|Id=hnbc8}}{{Ref/Reuse|OSFM69}} also referred to as the '''Earth Sustained Defense Campaign''',{{Ref/Reuse|lootcrate2}} was one of the largest, bloodiest and latest engagements fought between the [[Covenant]] and the forces of the [[Unified Earth Government]] (primarily those of the [[United Nations Space Command]]), at the end of the approximately twenty-seven year-long{{Ref/Note|The war was definitely concluded on December 11, 2552 when the Prophet of Truth was killed. However, an official cessation of hostilities did not come until March 3, 2553.}} [[Human-Covenant War]], which took place on and above the planet [[Earth]] from [[2552#October|October 20]] to at least [[2552#December|December 3, 2552]].{{Ref/NoteReuse|battleend}} It was one of the most important battles of the war, as the fate of humanity depended on the survival of its homeworld and seat of its [[UEG|government]].{{Ref/Note|While [[Insurrectionist|not all]] of humanity believes itself to be subject to the UEG, the UEG claims authority over all of humanity.}}
*{{Class|CCS|Battlecruiser}}
*[[Pure Form]]s
*Sangheili Combat Forms
*Human Combat Forms
*Jiralhanae Combat Forms
*[[Infection forms]]
*[[Carrier forms]]


|casual1=Numerous UNSC ground / air forces, Sangheili and civilian casualties due to orbital bombardment<ref>''[[Halo 3]] level [[Crow's Nest (Level)|Crow's Nest]]</ref>
Though the invasion took place on a global scale, the most significant conflicts occurred in the [[East African Protectorate]] in the form of three battles fought within and between the cities of [[Mombasa]] and [[Voi]], collectively referred to as the [[First Battle of Mombasa|first]], [[Second Battle of Mombasa|second]], and [[Battle of Voi|third]] battles of Mombasa.{{Ref/Game|Id=HSA|Game=Halo: Spartan Assault|What=co-op introductory cutscene}} The conflict began when the [[Fleet of Sacred Consecration]], under the command of the [[Prophet of Regret]], arrived on October 20 with intentions of traveling through the [[Portal at Voi|portal]] that a [[luminary]] in its possession pointed to. This move was made without the consent of the other two [[Hierarchs]] and in ignorance regarding the status of this planet as [[human]]ity's homeworld. Faced with the full might of the [[UNSC Home Fleet]], it was not long before Regret's [[Solemn Penance|flagship]] fled to [[Installation 05]]. Soon after this, the Prophet of Truth initiated his plans to [[Changing of the Guard|replace]] [[Sangheili]] with [[Jiralhanae]] and assume control over the entirety of the hierarchal triumvirate. The Jiralhanae occupation forces left behind by Regret assumed control of all remaining local Covenant forces on and over New Mombasa by secretly killing all abandoned Sangheili in the city to secure Truth's later arrival following the beginning of the [[Great Schism]]. Later on the next day, a large [[Truth's fleet|Jiralhanae support and excavation fleet]]<!--Halo Waypoint confirms that Truth's fleet arrived on October 21st--> sent by Truth was then dispatched to Mombasa and begin to [[Glassing|glass]] most of [[Republic of Kenya|Kenya,]] alongside the remnants of Regret's fleet while additional Covenant reinforcements continued to appear in the system and began a resurgent and larger assault on the planet.{{Ref/Reuse|waypointvergil}}{{Ref/Reuse|waypoint}}{{Ref/Reuse|lootcrate2}}


*2+ [[Orbital Defense Platform]]s
At this point, the fight for Earth began in earnest. Smaller battles were waged all across the world, from the UEG capital of [[Sydney]], [[Australia]], to [[Cleveland]], [[URNA]], to [[Havana]], Cuba, and to [[Mount Erebus]], [[Antarctica]] and multiple other locations even when the Sangheili and now Jiralhanae-led Covenant forces turned on each other following the beginning of the [[Great Schism]].{{Ref/Reuse|encycearth}}{{Ref/Reuse|HUI1}}{{Ref/Reuse|goo204}}{{Ref/Reuse|lootcrate2}} By November 17 after very hard fighting, most of the Home Fleet had been obliterated by substantial Covenant naval forces loyal to the [[San'Shyuum|Prophets]], including the Prophet of Truth,{{Ref/Reuse|H2GJ}} and the majority of cities were destroyed as well throughout the battle.{{Ref/Reuse|HUI3}} After defenders and the orbital defense grid were overwhelmed, the Earth had been massively devastated by a large Covenant [[orbital bombardment|bombardment]], resulting in catastrophic human casualties.{{Ref/Reuse|H3CN}} It was on this date that the Prophet of Truth himself, aboard the [[Forerunner Dreadnought]] and with [[John-117|Spartan-117]] in tow, arrived and headed straight for the [[Portal at Voi|Excession]], by then fully excavated. Upon interfacing with the [[keyship]], the portal was activated and a large contingent of the remaining Covenant fleet under the Prophet's command departed through the [[Portal at Voi|Portal]] with the intention of activating the [[Halo Array]] from [[Installation 00|the Ark]].{{Ref/Reuse|H3Storm}}
**''[[Athens Station]]''
**''[[Malta Station]]''
*Majority of the [[UNSC Home Fleet]]
*Portions of 405th and 105th Divisions
**[[Unnamed UNSC Colonel|Unnamed Colonel]]
**[[Unnamed Lieutenant (Halo 2)|Unnamed Lieutenant]]
**[[Master Gunnery Sergeant|Cairo Armory Sergeant]]
*Unknown Civilian Casualties, Presumed Heavy


|casual2=Heavy losses, survivors escaped through the [[Portal]]
Almost immediately after this, the [[Flood]] arrived aboard a [[Indulgence of Conviction|captured]] {{Pattern|Ket|battlecruiser}}, which crashed down in the town of [[Voi]]. A [[battle group]] assigned to the [[Fleet of Retribution]], a [[Covenant separatists|Covenant separatist]] fleet allied with the UNSC against Truth and his loyalists, was permitted to [[glass]] a large portion of [[Kenya]] to prevent the parasite's spread. With the threat from the Flood dealt with and the bulk of Covenant forces gone, several UNSC forces accompanied the Fleet of Retribution in pursuit of Truth.{{Ref/Reuse|H3Flood}} The remainder of UNSC forces remained behind to defend Earth from an expected full-scale Flood invasion and also began a major counteroffensive to eliminate all Covenant that remained.{{Ref/Reuse|H3Flood}}{{Ref/Reuse|lootcrate2}}


|casual3=All Flood
Official accounts report that, faced with the potential of human extinction at the hands of an alien hegemony, a significant number of civilians joined the UNSC forces to repel the Covenant throughout the campaign on Earth with many becoming an instrumental part of the war effort.{{Ref/Book|Id=OSFM69|OSFM|Page=69}}{{Ref/Reuse|HUI1}}
}}


{{Quote|Earth... is all we have left.|Lord [[Terrence Hood]]}}
==Background==
The [[Human-Covenant War]] was a decades-long conflict wherein the Covenant hegemony was determined to exterminate all of humanity at the behest of its three [[Hierarchs]], who falsely considered humans as representing the living embodiment, and thus discreditation, of their [[Covenant religion|religion]]'s [[Forerunners|gods]] at the time of [[2525|their discovery]]. Also a goal of the empire, from long before first contact with humanity, was the location and activation of the [[Halo]] rings.


===Preparations===
In [[2550]], preparing for a possible battle at Earth, the UNSC reactivated the museum ship {{UNSCShip|Crassus}}.{{Ref/Reuse|CFStrike}}


In the aftermath of the [[Fall of Reach]], the UNSC began to pull the majority of its forces back to Earth, with most units assigned to defend Earth's six [[Space elevator|tether cities]].{{Ref/Anthology|Evo|Story=Palace Hotel|StoryLinkText=Palace Hotel}}


The '''Battle of Earth''' was a very large and prolonged engagement between the [[Covenant]] and the [[United Nations Space Command]], which occurred on and above the planet [[Earth]], inside the [[Sol System]] from [[2552 #October|October 20, 2552]] to November 17th, when the [[Prophet of Truth]]'s [[Forerunner Dreadnought|Dreadnought]] left Earth through the [[Portal]].
====Formation of the Home Fleet====
From [[2552#May|May 14–19, 2552]], UNSC forces in the [[Earth Defense Coordination Zone]] were placed at maximum readiness levels and all warships with [[MAC|magnetic accelerator cannon]]s self-deployed or towed to rally points. [[Cairo Station (station)|Cairo Station]] was established as flag headquarters. Following [[2552#September 5|September 5, 2552]], all remaining [[UNSC Navy|naval]] forces were consolidated into a single command grouping: the [[UNSC Home Fleet]]. Fleet Admiral [[Joseph Harper]] was appointed senior flag officer and given primary administrative and tasking authority over all assets in the [[Sol system]] under emergency directives authorized by [[UNSC High Command]] and approved by the [[UEG Security Council]]. Remaining expeditionary and defense fleets retained administrative control over their [[battle group]]s, though all type commands were dissolved.{{Ref/Reuse|lootcrate2}}


==Background==
===Earth compromised===
The Covenant, specifically the [[Prophet of Truth]],<ref name="waypoint">''[[Halo Waypoint]], "Ten Twenty" history article''</ref> learned of [[Earth]]'s location in the aftermath of the [[Battle of Reach]]. Because Earth was the home planet of the human species and also the political military center of the [[United Nations Space Command]] and one of the last massed pockets of heavy UNSC resistance, it became a primary target for Truth, who had amassed to no less than five hundred warships in [[Tau Ceti System]] around the Covenant mobile space station ''[[Unyielding Hierophant]]'', preparing a massive Covenant [[Truth's Fleet|assault fleet]] to attack Earth in a single, decisive strike that would overwhelm Earth's defenses almost instantaneously.<ref>''[[Halo: First Strike]]''</ref> However, [[Cortana]] learned of the coordination of the Covenant fleet, and a [[SPARTAN-II]] strike team led by [[SPARTAN-117]] assaulted the space station, causing a cataclysmic reactor detonation that wiped out the ''Unyielding Hierophant'' and almost all of the aggregated Covenant fleet assembling for the strike on Earth, leaving only a few dozen damaged warships that were still intact, while the SPARTAN-II team escaped with minimal casualties, although the tenuousness of the operation led Cortana to later say in a UNSC report that they went to "hell and back". <ref>''[[Halo 2]]'' Instruction Manual</ref> After this, SPARTAN-117's team traveled back to Earth on the {{UNSCShip|Gettysburg}}.  
[[File:EarthLuminary.png|thumb|left|150px|Erde-Tyrene, as represented by the [[luminary]] discovered on Meridian.]]
{{main|Operation: FIRST STRIKE}}
The [[Prophet of Truth]] discovered the location of [[Earth]] after the [[Fall of Reach]], but withheld knowledge of this discovery from the rest of the Covenant leadership.{{Ref/Film|Id=waypoint|Film=Halo Waypoint|Story=Ten Twenty|StoryLinkText=Ten Twenty}} To attack the human homeworld, he ordered an [[Truth's fleet|assault fleet]] to secretly assemble at ''[[Unyielding Hierophant]]'' station in the [[Tau Ceti system]]. The fleet would overwhelm Earth's defenses in a single decisive strike.{{Ref/Reuse|waypoint}}{{Ref/Novel|FS}} The fleet was discovered by the UNSC [[Artificial intelligence|AI]] [[Cortana]] and a preemptive strike was led by [[Vice Admiral]] [[Danforth Whitcomb]] and a [[SPARTAN-II Program|SPARTAN-II]], strike team, which successfully destroyed ''Unyielding Hierophant'' and almost the entirety of the assembled fleet, some five hundred ships.{{Ref/Reuse|waypoint}}{{Ref/Novel|Id=HFS333|FS|Page=333}} Earth was granted a small reprieve.


While the Prophet of Truth had collected the massive fleet to the ''Unyielding Hierophant'' and knew Earth as a major UNSC stronghold, he did not inform of this to the other [[Hierarchs]] because of his devious, physio-political plans for the Covenant. Since its destruction, the ''Unyielding Hierophant'' remained a closely guarded secret among the Covenant. Meanwhile, the [[Prophet of Regret]], uninformed of the ''Unyielding Hierophant'' or the fact Earth was humanity's homeworld, discovered a significant Forerunner relic on Earth; the [[Portal]] to [[Installation 00|the Ark]]. Regret immediately led a [[Task Force]] of two [[Assault Carrier]]s and thirteen {{Class|CCS|Battlecruiser}}s to Earth. When he dropped out of [[Slipspace]], he proceeded to engage the UNSC forces, igniting the Battle of Earth. Meanwhile, Truth learned of Regret's foolishness, and sent a large, [[Jiralhanae]]-led backup fleet to pick up where he had left off, which arrived a few hours after Regret.<ref name="waypoint"/>
The [[Prophet of Regret]] also independently learned of the location of Earth that was known as Erde-Tyrene as the location of a [[Forerunner]] artifact, [[Portal at Voi|the Portal]] leading to [[Installation 00|the Ark]]. This revelation came after long study by [[steward]]s of a Forerunner [[luminary]] taken from the moon, [[Meridian]], in [[2551]]. Not being privy to Truth's information, Regret set off to uncover the artifact without any knowledge  that Erde-Tyrenne was the humans' homeworld. Regret unknowingly led his [[Fleet of Sacred Consecration|small fleet]], a mere two [[CAS-class assault carrier|assault carriers]] and thirteen [[Ket-pattern battlecruiser|battlecruisers]], straight into Earth's formidable defenses.{{Ref/Reuse|waypoint}} Truth belatedly learned of Regret's expedition to Earth, and dispatched a large [[Jiralhanae]]-led support and excavation fleet to reinforce the remaining forces of the initial fleet. They arrived almost one day after Regret had fled.{{Ref/Reuse|waypoint}}{{Ref/Reuse|waypointvergil}}<!--Halo Waypoint confirms that Truth's fleet arrived on October 21st-->
{{clear|left}}


==Battle==
==Battle==
===Beginning===
===Arrival of Regret's fleet===
{{Quote|Something's not right. The [[Fleet of Particular Justice|fleet]] that destroyed Reach was fifty times this size!|[[Fleet Admiral]] [[Terrence Hood]]}}
{{Quote|Something's not right. The fleet that destroyed Reach was fifty times this size!|[[Fleet Admiral]] [[Terrence Hood]]{{Ref/Reuse|H2CS}}}}
 
The [[High Prophet of Regret]]'s [[Fleet of Sacred Consecration|fleet]] was detected near [[Jupiter]]'s moon [[Io]], as a series of [[Slipstream space|slipspace]] "whispers". [[Slipstream space probe|Probes]] were sent to investigate, but shortly afterwards the Covenant fleet exited slipspace near Earth, just outside the killzone of the planet's [[orbital defense platform]]s. UNSC forces went to [[Tactical Condition|TACCON]] Alpha 2. [[Fleet Admiral]] [[Harper]] ordered his battle group of the [[Fifth Fleet]] to attack, but quickly received new orders from Fleet Admiral [[Terrence Hood]] to fall back and defend the ODPs. Having expected an overwhelming enemy offensive in the style of the [[Fall of Reach|Battle of Reach]], the relative weakness of the attack puzzled the defenders.{{Ref/Level|Id=H2CS|H2|Cairo Station}}
The [[Covenant]] Fleet was detected while ''en route'' near [[Io]], one of the moons of Jupiter. Probes were sent to investigate, but shortly afterward, the force of fifteen Covenant warships reverted from Slipspace just beyond the range of the [[UNSC]] perimeter MAC orbital installations in orbit around [[Earth]]. The [[TACCON]] was raised to Alpha 2 in response to the Covenant presence around Earth as alarmed UNSC orbital forces prepared to repel the incoming [[Covenant]] assault.
 
While the Covenant Fleet held its position beyond the Orbital MAC Platform clusters range, [[Fleet Admiral]] [[Harper]] suggested a preemptive strike on the Covenant Fleet, but Fleet Admiral [[Lord Terrence Hood]] countermanded his order, ordering the UNSC fleet to hold and defend the Orbital MAC Platforms and wait for the Covenant Fleet to enter MAC range.


It should be noted that at this point in time the Cole Protocol no longer applied to Earth. During Master Chief's return to Earth, a random jump had to be made even though there was overwhelming evidence that the Covenant knew of Earth's location, there was no certainty. After the arrival of Regret, the secrecy of Earth's location had been lost, UNSC forces could make slipspace jumps directly into the Sol System.
====Orbital Defense====
{{Quote|no=two|Fleet Admiral Harper|Cortana|q1=First Echelon, you're with me, blanket those cruisers, take ‘em out one by one. Second Echelon, keep those carriers busy.|q2=Registering all hostile vessels inside the kill zone. Thirteen cruisers, two assault carriers. I'm going loud!|[[Fleet Admiral]] [[Joseph Harper|Harper]] and [[Cortana]] as the [[Space warfare|space battle]] between opposing fleets rages.{{Ref/Reuse|H2CS}}}}
[[File:H2A-pavel-belov-cairo-external.jpg|300px|thumb|left|The battle in space takes place despite Regret's fleet being outnumbered by the UNSC Home Fleet.]]
The assault carriers converged on the battle cluster including ''[[Athens Station]]'', ''[[Cairo Station (station)|Cairo Station]]'' and ''[[Malta Station]]''.{{Ref/Reuse|H2CS}} The ODPs opened fire as the enemy entered range. Covenant troops [[R'sisho-pattern Tick|boarded]] the stations, intending to demolish them with a {{Pattern|Chershi|antimatter charge|}} [[antimatter charge]] each. As each bomb was planted the Covenant withdrew. ''Athens'' and ''Malta'' were demolished in quick succession. [[Cortana]], aboard ''Cairo'', deduced the nature of the threat and [[John-117]] was dispatched to prevent the same fate from befalling ''Cairo''.{{Ref/Reuse|H2CS}}


===Covenant Assault===
Cortana directed the SPARTAN-II to the bomb's location in ''Cairo''{{'}}s fire control center. En route to the bomb, John-117 rescued Commander [[Miranda Keyes]] and allowed her to board {{UNSCShip|In Amber Clad}}. The frigate departed ''Cairo'' to join the fray.{{Ref/Reuse|H2CS}}
{{Quote|The carriers are breaking through, Sir! They're heading straight for the Cairo!|Fleet Admiral [[Harper]]}}
The UNSC possessed three hundred Orbital MAC Platforms, sufficient firepower to level the Covenant fleet in a single salvo when they entered range. However, Regret's fleet launched waves of [[Covenant Boarding Craft]]: small, nimble, fast-moving craft that would be difficult to track with the large, cumbersome Mark V Magnetic Accelerator Cannons that were the UNSC's primary defense. They were able to penetrate the UNSC fleet and dock with multiple MAC orbital installations, including ''[[Athens Station]]'', ''[[Cairo Station]]'' and ''[[Malta Station]]''. The Covenant appeared to target each installation with no less than half a dozen boarding craft. Despite the fact that the ''Athens'' and ''Malta'' were deeper into the UNSC formation, those were among the first installations to be boarded, while the ''Cairo'' was attacked shortly afterward by Boarding Craft that docked all across the station. These Boarding Craft started deploying dozens of Covenant troops, including [[Elite]]s, [[Yanme'e|Drone]]s and [[Grunt]]s that overwhelmed most of the naval personnel and Marines stationed in the axial sections of ''Cairo Station''. Teams of [[Ranger]] Elites marauded across the exteriors of the Orbital MAC Platforms to prevent personnel from traveling through airlocks. While [[SPARTAN-117]] led a UNSC counterattack on the ''Cairo'', saving pinned-down teams of trapped Navy and Marine personnel from plasma fire, the ''Athens'' and the ''Malta'' were infiltrated internally and in the early stages of the Battle of Earth, the Covenant planted a [[Covenant Bomb|Bomb]] in each captured MAC installation. They then retreated in their boarding craft before blowing up both stations.


Meanwhile, on the ''Cairo'', defusing the Covenant Bomb had become a primary objective. SPARTAN-117 continued his counterstrike across the axial segments of the station, despite the Covenant's significant defenses in their invaded sections, which were entrenched with [[Plasma Cannon]]s and [[Stationary Shield Generator]]s. The Covenant also managed to interdict [[Commander]] [[Miranda Keyes]], who was attempting to board her warship, the {{UNSCShip|In Amber Clad}} and launch it into the growing orbital combat. However, SPARTAN-117 single-handedly rescued her and continued freeing other parts of the station being besieged by Covenant forces.
Meanwhile, Harper's Fifth Fleet continued to engage the Covenant task force in Earth orbit, sustaining huge losses in the wake of the Covenant's superior firepower but still prevailing through sheer numbers against the unusually small Covenant force. However, even as their escorts were effectively routed by the UNSC, the two assault carriers pushed onward, bypassing much of the already battered human fleet even as they too came under fire.{{Ref/Reuse|H2CS}}


SPARTAN-117 eventually located and disarmed the Covenant Bomb, mere moments before it was set to explode. By this point, the Covenant fleet had been reduced to a handful of ships, but they had broken through the defensive lines. Commander Keyes prepared to launch an assault on the two vessels, only to be rebuked by Admiral Hood, who insisted that they wait for reinforcement. SPARTAN-117 then requested permission to "give the Covenant back their bomb", which Hood promptly granted. SPARTAN-117 left the station through the airlock, taking the bomb with him and free-falling in Earth orbit.  
The two assault carriers began to break through toward ''Cairo''. Cortana directed ''Cairo''{{'}}s MAC against the ''[[Solemn Penance]]'', but the ship did not stop to engage and instead made directly for [[New Mombasa]] on the surface. Admiral Harper led the attack on the [[Day of Jubilation|second carrier]] and depleted its shields. Keyes volunteered to attack the carrier immediately, but Hood was unwilling to pit a single frigate against so large a target.{{Ref/Reuse|H2CS}}


The Prophet of Regret's flagship descended towards Africa and could not be stopped, but the second carrier remained in Earth's orbit. With assistance from UNSC Longsword squadrons, SPARTAN-117 was able to infiltrate the carrier and re-activate the bomb. The Master Chief fled just as the entire vessel exploded. The Master Chief then free-fell onto the ''UNSC In Amber Clad'', and later joined in the [[Battle of Mombasa]], which was unfolding on the surface.
The solution to the second carrier came from an unexpected angle. John-117 and Cortana managed to defuse and capture the Covenant antimatter bomb aboard ''Cairo'', and the Spartan volunteered to go [[Extra-vehicular activity|EVA]] and personally plant the bomb on the last carrier. With Lord Hood's approval, John-117 leapt out of an airlock with the bomb using only the initial explosive decompression for impulse. [[GA-TL1 Longsword|Longsword]] interceptors opened a breach in the carrier's hull and allowed the Spartan to infiltrate and plant the bomb internally. The detonation destroyed the ship. John-117 escaped using the same means he had arrived and free fell to the UNSC ''In Amber Clad''.{{Ref/Reuse|H2CS}}


=== Ground Battle ===
====Earthside====
[[File:Pelican and warthog.jpg|thumb|right|UNSC Forces approaching New Mombasa.]]
{{Quote|Dear humanity, we '''regret''' being alien bastards, we '''regret''' coming to Earth, and we most definitely '''regret''' the Corps just blew up our raggedy-ass fleet!|Avery Johnson commenting on Regret's message.{{Ref/Reuse|H2Out}}}}
{{Main|Battle of Mombasa}}
{{Main|Battle of Mombasa}}
[[File:H2A-daniil-kuksov-metropolis-scarab.png|300px|thumb|left|A Scarab attacks the city at the start of the invasion on New Mombasa.]]
Regret's carrier came to arrive over [[New Mombasa]] in the [[East African Protectorate]] via [[slipspace]] and deployed troops into the city and the surrounding area in an attempt to clear and secure it.{{Ref/Game|Id=sscirc1arc2|ODST|Detail=Sadie's Story, Circle 1, Arc 2}}{{Ref/Comic|Id=HGN|HGN|Detail=[[Second Sunrise Over New Mombasa]]}}{{Ref/Level|Id=H2Out|Game=Halo 2|Level=Outskirts}} While the [[Mombasa Tether]] had been shut down, the city's population were trying to leave the city.{{Ref/Game|Id=sscirc5arc2|ODST|Detail=Sadie's Story, Circle 5, Arc 2}}{{Ref/Reuse|Id=HGN}} While the UNSC, [[militia]]s and armed citizens was fighting against the Covenant forces, UNSC high command wished to discover why the Covenant were landing only in Mombasa, and [[John-117]] was ordered to capture Regret for interrogation. The Spartan deployed with marines and [[Orbital Drop Shock Trooper|ODST]] in a trio of [[D77-TC Pelican|Pelicans]] from the {{UNSCShip|In Amber Clad}} near the city. The dropships were shot down by a Covenant [[Protos-pattern Scarab|Scarab]] in [[Old Mombasa]].{{Ref/Reuse|H2Out}} John-117 and the survivors regrouped and pursued the walker to [[New Mombasa 105 East|NM 105E]], and across the bridge to New Mombasa [[New Mombasa Sector B|Sector B]]. At the time, the [[Alpha-Five]] was tasked to [[Operation: WINDOW PANE|recover]] the [[Conduit]] that was brought by the Covenant on the city while another ODST [[Unidentified ODST squad|squad]] were ordered to retrieve information the Covenant were interested in.{{Ref/Game|Id=ss|Game=Halo: Spartan Strike}} The Scarab was eventually trapped and destroyed by John-117 at the end of a canal. Covenant forces started to withdraw to the carrier for [[Slipstream space|slipspace]] departure to the [[Halo Array|Halo]] [[Installation 05]].{{Ref/Level|Id=H2Metro|H2|Metropolis}}


{{Quote|Dear Humanity, we Regret being alien bastards, we Regret coming to Earth, and we most definitely Regret the Corps just blew up our raggedy-ass fleet!|Avery Johnson commenting on Regret's message.}}
In orbit the Home Fleet [[Operation: BUMRUSH|began deploying]] ODSTs to [[Mombasa]] in [[M8900 drop pod|SOEIVs]], intending to board the carrier and capture the Prophet of Regret. One Squad, [[Alpha-Nine]], deploying from the {{UNSCShip|Say My Name}} and led by Gunnery Sergeant [[Edward Buck]], was diverted by [[Office of Naval Intelligence|ONI]] to secure the city's [[Superintendent|infrastructure AI]].{{Ref/Level|Id=H3RDrop|ODST|Prepare To Drop}}
 
Regret's carrier came to a stop above the city of [[New Mombasa]] in the [[East African Protectorate]]. From there the first Covenant troops to ever set foot on humanity's homeworld engaged in the first land engagement of the Battle of Earth. The [[UNSC In Amber Clad]] descended near [[Mombasa]], and deployed three [[Pelican]]s, one with Spartan-117 onboard, with the intent of infiltrating the Carrier and capturing the Prophet of Regret. However, all of the dropships were shot down by a Covenant [[Type-47 Ultra Heavy Assault Platform|Scarab]] in [[Old Mombasa]]. Spartan-117, with the assistance of numerous Marines, made his way through Old Mombasa, to [[New Mombasa 105 East|NM 105E]], and across the bridge to New Mombasa [[New Mombasa Sector B|Sector B]], where the Scarab was eventually trapped and destroyed. During the battle's final moments, the Covenant forces started to retreat back to the Carrier.  


Meanwhile in orbit, Regret's fleet was nearly defeated, with the UNSC taking heavy casualties. Ships of the Home Fleet, including the {{UNSCShip|Say My Name}} in Earth's low orbit, deployed teams of [[Orbital Drop Shock Trooper|ODST]], most of which were tasked with assaulting the Carrier by breaching its hull. However, one of these teams was chosen by an [[Office of Naval Intelligence|ONI]] [[Veronica Dare|operative]] to partake in a mission to secure the city's infrastructure A.I. the [[Superintendent (Construct)|Superintendent]] from falling into enemy hands.
Regret's means of escape took the UNSC by surprise. The carrier initiated a slipspace jump while still over the city. By this time, Lord Hood originally attempted to intercept the Covenant carrier by dispatching two {{Class|Marathon|heavy cruiser}}s at New Mombasa.{{Ref/Reuse|H2Metro}} The UNSC ''In Amber Clad'' quickly recovered John-117 and the light frigate along with {{UNSCShip|Paris}}, {{UNSCShip|Redoutable}}, {{UNSCShip|Coral Sea}} were fast enough to follow the carrier into slipspace while {{UNSCShip|Dusk}} only followed in the fleeing ship's [[slipstream space#Slipspace wake|wake]].{{Ref/Novel|Id=goo186|HGoO|Page=186}} The slipspace rupture severely damaged the city{{Ref/Reuse|H2Metro}} and generated an [[Electromagnetic pulse|EMP]]. Many ODSTs had not yet landed when the carrier escaped and were caught in the EMP and blast. Drop pods were disabled in flight and plunged into uncontrolled freefall. Those who survived the blast were scattered across the city.{{Ref/Reuse|H3RDrop}}


=== Regret's Retreat ===
Around this time, Covenant forces also attacked [[Cairo]], [[Egypt]]{{Ref/Reuse|encycearth}} and [[Berkeley]], [[URNA]]. At Berkeley, a [[Covenant starship]], possibly a ''Ket''-pattern battlecruiser from the Fleet of Sacred Consecration, began deploying its [[Seraph]] fighters on the city.{{Ref/Game|Id=axon12|Game=I love bees|Detail=[[Axon Clips]] - [[Axon Clips Chapter 12|Chapter 12]] - Kamal: "Fiancée"}}{{Ref/Note|This is derived from numerous pieces of information from within the Axon Clips including: Chapter 12 which mentions Kamal taking a flight back to the west coast; Chapter 9 where Sophia mentions that one of the people she is talking to isn't a Berkeley police officer and Kamal having to take a packbus to Reno, Nevada as his first stop; Chapter 10 where Kamal mentions waiting for said bus outside of Oakland.}}
[[File:COVENANT ASSAILT CARRIER.jpg|thumb|Regret's Carrier prepares to jump.]]
{{Quote|Slipspace rupture off the target's bow! It's going to jump - '''inside''' the city!|A bridge officer reporting to Commander Keyes.}}
Seeing the Carrier was retreating, Commander Keyes ordered Spartan-117 to be extracted back to the In Amber Clad. Moments after this, the Carrier jumped into [[Slipstream Space|slipspace]] while still above the city, with the In Amber Clad following in its [[Slipspace Wake|wake]].<ref>''[[Halo 2]] level, [[Metropolis (Level)|Metropolis]]''</ref> The ODSTs were still on their way, and could do nothing but watch as the carrier's slipspace rupture generated a massive shockwave, which severely damaged the city, as well as an [[Electromagnetic Pulse|EMP]], which disabled the ODSTs' [[Single Occupant Exoatmospheric Insertion Vehicle|drop pods]]' electronic systems, plunging the pods into uncontrolled freefall. They were scattered around the city, the ones close to the carrier presumably killed by the slipspace rupture.<ref name="odst">''[[Halo 3: ODST]]''</ref>


===Covenant Occupation===
{{clear|left}}
{{Quote|The Covenant have found Earth. They ''own'' New Mombasa. Anyone that could've driven them off is dead, or gone. I'd say that makes for desperate times.|Edward Buck}}
[[File:Portal odst.png|thumb|right|200px|The Covenant occupation fleet uncovering the Portal.]]
Immediately following the slipspace event, [[Prophet of Truth]]'s [[Jiralhanae]]-led reinforcements arrived. Under orders from Truth, the Jiralhanae took command over the remaining ships from Regret's fleet, killing their Sangheili crews. A Jiralhanae-led occupation force was also inserted into New Mombasa, where they killed any remaining Sangheili infantry. This was a part of the Prophet of Truth's plan to eventually replace the [[Sangheili]] with Brutes as the Covenant's primary warrior race.<ref name="waypoint"/>


The surviving [[UNSC]] and [[New Mombasa Police Department|NMPD]] clashed with this force for control of the city. [[Unnamed Shock Trooper Squad|A squad of ODSTs]], with the assistance of Marine and NMPD survivors, as well as the city's AI [[Superintendent (Construct)|Superintendent]], participated in various battles. Despite their efforts, the city was eventually lost to the Covenant due to their overwhelming force. After this, the recently-arrived Covenant ships started uncovering the [[Portal]] to the [[Installation 00|Ark]], glassing the Mombasa area along with its surroundings.<ref name="odst"/>
===Covenant reinforcements===
====Fall of Mombasa====
{{Quote|no=two|Veronica Dare|Edward Buck|q1=When did ''this'' happen?|q2=They started showing up right before I went underground.|[[Captain]] [[Veronica Dare]] and [[Gunnery Sergeant]] [[Edward Buck]] viewing a second and larger [[Truth's fleet|fleet]] of Covenant starships circling Mombasa.{{Ref/Reuse|H3RCoast}}}}
[[File:Portal odst.png|thumb|250px|After fully securing the East Africa, the Jiralhanae excavation fleet begin to uncover the Portal at [[New Mombasa]].]]
Immediately following the slipspace event, [[Jiralhanae]] forces loyal to the [[High Prophet of Truth]], who had embedded said troops into his political rival Regret's fleet,{{Ref/Novel|Id=hnbc8|[[Halo: New Blood]]|Chapter=8}} enacted their leader's orders. The Jiralhanae violently displaced their Sangheili commanders left in the initial fleet both ground-side,{{Ref/Level|Id=H3RTayari|ODST|Tayari Plaza}} and in orbit, and then seized the full control of Covenant forces at Mombasa in order to secure Truth's arrival on the Portal by his loyalists,{{Ref/Reuse|Id=bungie}} the beginning of Truth's plan to place the Jiralhanae as the Covenant's primary warrior race.{{Ref/Reuse|waypoint}} While ''[[High Charity]]'' and the rest of its [[High Charity defense fleet|fleet]] were following the ''Solemn Penance'' on their way to the newly discovered Halo Installation 05, the murder of Regret's Sangheili forces remained secret from the rest of the Covenant.  


In the following weeks, the desperate battle for Earth was far from over. More Covenant occupation ships arrived, attacking targets and digging for Forerunner artifacts around the globe, with ships in orbit battering the UNSC Home Fleet. The [[SPARTAN-II|Spartan]] [[Blue Team]], [[SPARTAN-104]], [[SPARTAN-058]], and [[SPARTAN-043]] partook in numerous battles around Earth, including many orbital zero-gravity operations, the [[Battle of Ross Island]] in the [[Antarctica]] where they neutralized a Covenant excavation with a [[HAVOK Nuclear Warhead|HAVOK tactical nuke]]. Operating from [[Base Segundo Terra]] in [[Mexico City]], they performed an underwater mission off the [[Yucatan Peninsula]], and on [[2552 #November|November 3]], they partook in the [[Battle of Havana]] in [[Republic of Cuba|Cuba]], which ended in the [[Centennial Orbital Elevator]] collapsing. After this, the team was re-directed to aid [[Catherine Elizabeth Halsey|Dr. Halsey]] on [[Onyx]]. They captured the ''[[Bloodied Spirit]]'' and headed straight for Onyx.<ref>''[[Halo: Ghosts of Onyx]]''</ref>  
Surviving UNSC forces in the city, aided by the [[New Mombasa Police Department]], continued to resist, but were eventually overwhelmed. The next day on October 21, a [[Truth's fleet|Jiralhanae-led support fleet]] sent by Truth arrived at the African continent, joining the remains of Regret's fleet as the combined fleet began glassing [[Mombasa]] and the surrounding area together, uncovering [[the Portal]] to the [[Installation 00|Ark]].{{Ref/Site|Id=waypointvergil|URL=https://www.halowaypoint.com/en-us/news/canon-fodder-vergil-reality|Site=Halo Waypoint|Page=Canon Fodder - Vergil Reality|D=15|M=06|Y=2021}}{{Ref/Reuse|waypoint}}<!--Halo Waypoint confirms that Truth's fleet arrived on October 21st--> Captain Dare and her [[Alpha-Nine|ODST squad]] managed to secure the city's [[Superintendent|infrastructure AI]] and escape before the city fell to the enemy.{{Ref/Level|Id=H3RCoast|ODST|Coastal Highway}} These forces of the new fleet was both archaeological and military.<ref>halo3.com - About Halo, Characters, Humans ([https://archives.halopedia.org/halo3/ Archive])</ref> While a handful of ships of the second fleet engaged Earth's forces, the majority of the fleet was preoccupied for the excavation of the massive slipspace portal.{{Ref/Reuse|mythos}}


With the Spartans gone, during the weeks that followed, almost the entire UNSC resistance on Earth was crushed, at least in the [[East African Protectorate]]. The Covenant set up heavy defenses around their excavation for the Ark Portal, including heavy [[Anti-Aircraft Battery|AA Batteries]] in [[Voi]] and the surrounding regions. The constant orbital battle left the UNSC Home Fleet's numbers greatly reduced. During this time, unbeknownst to the Covenant, the UNSC reactivated an old military base, [[Crow's Nest (Base)|Crow's Nest]] near Voi.
====Covenant occupation====
{{Quote|So then the [[Covenant fleet]] really starts to tear into the orbital defenses. It's getting ugly up there. Major skirmishes with the [[Second Fleet|Second]], [[Seventh Fleet|Seventh]], and [[Sixteenth Fleet]]s.|[[Laura Tanner|Sergeant Laura "Smokes" Tanner]]{{Ref/Reuse|goo204}}}}
[[File:HLC battle for earth.png|thumb|left|250px|UNSC and Covenant forces fight each other for supremacy of Earth.]]
The battle spread all over the globe in the following days and weeks with more and more [[Covenant fleet]]s of multitude of [[warship]]s continuing to arrive and attacked targeting cities and areas globally after the full compromise of Earth,{{Ref/Reuse|HUI3}}{{Ref/Reuse|goo204}}{{Ref/Reuse|lootcrate2}} led by Jiralhanae and Sangheili commanders.{{Ref/Reuse|HUI1}}{{Ref/Game|Id=thav|Halo Infinite|What=Targets: Thav 'Sebarim}} At the same time as these events, other colonies and parts of the [[Sol system]] such as [[Battle of Luna|Luna]] and [[Battle of Mars|Mars]] came under assault by the Covenant.{{Ref/Reuse|lootcrate2}}


=== Truth's Arrival ===
While maintaining a significant presence in orbit, the Covenant ships deployed ground forces to multiple targets around the globe.{{Ref/Reuse|goo204}} However, due to many Covenant forces, notably those under the command of the [[Prophet of Truth]] and his Jiralhanae loyalists, that were concentrating their forces at Kenya for the excavation of the Portal at Voi, some of their forces were sometimes disorganized, hence less effectual.{{Ref/Reuse|lootcrate2}} A [[Second Battle of New Mombasa]] between the UNSC and Jiralhanae-led Covenant ground forces takes place shortly after the [[Battle of Mombasa|first battle]] over seven days<ref name="JC">''Xbox.com'': Jake Courage (defunct, [https://archives.halopedia.org/halo3/jakecourage/ Archived])</ref> before the end of October.{{Ref/Film|Film=Believe|Story=Museum}} The [[SPARTAN-II program|Spartan]] [[Blue Team]], consisting of [[Frederic-104]], [[Linda-058]], and [[William-043]], were constantly engaged for the first two weeks. They repelled enemy ships in orbit in numerous zero-gee operations whilst on the surface they neutralized Covenant excavations, first on [[Ross Island]] in [[Antarctica]],{{Ref/Reuse|goo204}} and then underwater off the [[Yucatan Peninsula]].
{{Quote|Master Chief, you mind telling me what you're doing on that ship?|Fleet Admiral Terrence Hood}}
{{Quote|Sir, finishing this fight.|Master Chief}}


[[Image:S117returnstoEarth2552.jpg|200px|thumb|right|John-117  and the Dreadnought entering Earth's atmosphere.]]
[[File:HINF London Skyline.png|thumb|250px|London, one of many major cities to fall under Covenant occupation.]]
On November 3, the [[Prophet of Truth]] left [[High Charity]] in the [[Forerunner Dreadnought]], destined to arrive at the Sol System on November 8, unknowingly carrying the stowaway John-117, returning to "finish the fight". The Prophet of Truth's intention was to activate The Ark, fire the [[Halo Array|Halo rings]], and begin what he thought would be the "[[Great Journey]]".
[[Sydney]], [[Australia]] was one of the cities invaded by the Covenant during the engagement due to its importance in UNSC's war effort. Though the city suffered heavy damage by Covenant bombardment, the UNSC's [[HIGHCOM Facility Bravo-6]] remained undamaged.{{Ref/Novel|Id=glasslandsp.26|Gla|Page=26-33}} [[Diego Garcia]], following its effective attacks against the initial Covenant forces during the [[Battle of Mombasa]], was attacked by a Covenant [[capital ship]] to destroy the base around November, but the base managed to survive the attack.{{Ref/Book|Id=encycearth|Book=Halo Encyclopedia: The Definitive Guide to the Halo Universe|Detail=Earth, p. 284-285, (2009); p. 296-297 (2011 edition)}}{{Ref/Novel|MorDi|Page=265}} [[Aranuka]], a vast city-platform built, was aggressively invaded by the Covenant, killing thousands of Aranukan inslanders, and much of the city was destroyed in their research for a supposed hidden Forerunner artifact. Despite heavy casualties, the UNSC was able to drift the alien invaders away and the [[Aranuka Space Tether]] survived the siege of the city.{{Ref/Reuse|Id=loochapt2}}


During the ongoing battle in Sol system, the Covenant forces [[Battle of Cleveland|invaded the city]] of [[Cleveland]] on Earth, looking for an artifact known as the "[[Key of Osanalan]]", which eventually turned out to be a hoax. During this time, [[Sergeant Major]] [[Avery Junior Johnson|Avery Johnson]], [[Thel 'Vadam|Arbiter]] and [[Commander]] [[Miranda Keyes]] arrived at Earth from Installation 05, Commander Keyes taking command of Crow's Nest on the ground.
Elsewhere, Jiralhanae forces landed in [[London]], [[Britain]] and soon established an occupation of the city. UNSC forces were deployed into the city to evacuate civilians, including future [[SPARTAN-IV program|SPARTAN-IV]] commander [[Laurette Agryna]].{{Ref/Generic|[[Halo Infinite Multiplayer Season 1 Cinematic Intro]]}}{{Ref/Site|URL=https://axisstudiosgroup.com/work/halo-infinite/|Site=Axis Studios|Page=Halo Infinite|Quote=Focusing on the recollections of Spartan Commander Laurette Agryna, the trailer delves into her own heroic journey as a young girl caught in the crosshairs of a battle in the centre of London 2552 AD, her rescue by Spartans and her inspiration to become a Spartan herself.|D=31|M=8|Y=2021}}


On November 17, the Forerunner Dreadnought reached Earth. [[SPARTAN-117]] - the [[Master Chief]], escaped by jumping from the ship and entered Earth's atmosphere, crashing into an [[East African Protectorate|East-African]] jungle. Meanwhile, [[Battle of Sector Six|a battle]] took place in Earth's [[Sector Six]], [[Afghanistan]], where a group of Marines struggled to retrieve a [[UNSC Laser Designator|Laser Designator]], which they used to track the Spartan's fall, making locating him easier.
On [[2552#November|November 3]], the [[Great Schism]] finally erupted among the Covenant with all [[Covenant separatists|now-casted out]] Sangheili and Covenant forces, now led by the Jiralhanae as the new dominant military backbone of the hegemony, turning and fighting each other which resulted many Sangheili being allied with the UNSC following the death of the [[Chieftain of the Jiralhanae]] [[Tartarus]] during the [[Battle of Installation 05]].{{Ref/Reuse|H2GJ}} During that time, the Spartan Blue Team were [[Battle of Havana|deployed]] to [[Havana]], [[Cuba]], where they stole the enemy Jiralhanae [[Sinaris-pattern heavy destroyer|destroyer]] ''[[Bloodied Spirit]]'', and destroyed another destroyer and the [[Centennial Orbital Elevator]]. They subsequently redeployed aboard the stolen ship to the Forerunner [[shield world]] [[Onyx]] to aid [[Catherine Halsey|Dr. Catherine Halsey]], the creator of the SPARTAN-II program.{{Ref/Novel|Id=goop.220|Halo: Ghosts of Onyx|Page=220}} During the same day, 3 UNSC [[expeditionary fleet]]s of the [[UNSC Home Fleet|Home Fleet]]: the [[Second Fleet|Second]], [[Seventh Fleet|Seventh]], and [[Sixteenth Fleet]]s were contesting Earth orbit against numerous Covenant vessels during major orbital skirmishes as the fighting in orbit is scattering the orbital defense,{{Ref/Novel|Id=goo204|HGoO|Page=204-205}} but the Covenant continued to raid the surface in search of [[Forerunner]] artifacts, with many under the [[Prophet of Truth]]'s command mostly concentrating in East Africa.{{Ref/Book|Id=mythos|HM|Page=117}}


=== Turning point ===
On [[2552#November|November 10]], Covenant forces began to excavate and occupy built-up positions centered around [[Free-fire Area OZONE]] in [[Arizona]], [[URNA]].{{Ref/Generic|Id=lootcrate2|Heading=[[Halo Legendary Crate]]|Subheading=[[Halo Legendary Crate/Data Drops|Data Drop #2]]}} As of mid-November, the majority of cities were destroyed over the course of the Battle for Earth,{{Ref/Reuse|HUI3}} and the population of Earth was already reduced to 5 billion earlier this month.{{Ref/Reuse|Id=ENC}}
{{Main|Battle of Voi}}


{{Quote|The Commander's come up with a good plan. But without you, I wasn't sure we could pull it off.|Lord Hood to John-117 at Crow's Nest}}
===Truth arrives===
{{Quote|no=two|1=Fleet Admiral Terrence Hood|q1=Master Chief, you mind telling me what you're doing on [[Anodyne Spirit|that ship]]?|2=Master Chief|q2=Sir, finishing [[Human-Covenant War|this fight]].|3=Admiral Terrence Hood and John-117, as the Keyship arrived at Earth.}}
[[File:HU-John-06.jpg|thumb|250px|John-117 attempting to assassinate the Prophet of Truth before the Prophet's death being foiled by a [[Kig-Yar Sniper]].]]
Near the conclusion of the [[Battle of Installation 05]], the [[Prophet of Truth]] departed ''[[High Charity]]'', near Halo [[Installation 05]], in the [[Forerunner]] [[keyship]] ''[[Anodyne Spirit]]'' on November 3, arriving at the [[Sol system]] on the November 8 and proceeding on course towards Earth at near-relativistic speeds.{{Ref/Reuse|Id=bungie}} The prophet sought to activate the Ark, fire the [[Halo Array]], and begin what he thought would be the "[[Great Journey]]". After the [[Fall of High Charity|loss]] of [[High Charity]] to the [[Flood]], the Covenant reorganized to make a final push offensive on Earth,{{Ref/Reuse|H2GJ}} as the Prophet of Truth took many remaining Covenant fleets at his disposal following his departure.{{Ref/Reuse|Id=hbc286}} However, upon his arrival, the Prophet quickly learned that John-117 had stowed away aboard the ship and its crew then became [[Scramble onboard Forerunner Dreadnought|preoccupied]] with finding and eliminating the Spartan.{{Ref/Reuse|LongRoad}}


In the morning, the [[John-117|Master Chief]] was retrieved by Sergeant Johnson, along with the Arbiter and a group of Marines. The company then fought their way through the Covenant captured territory and were extracted and taken to the [[Crow's Nest (Base)|Crow's Nest]] - one of the last UNSC strongholds and bastions in Africa. Here, [[Lieutenant Commander|Commander]] [[Miranda Keyes]] and Lord Hood planned a last-ditch and last-resort effort to cease Truth's activation plan.
By this time, the Prophet of Truth led the largest Covenant invasion force recorded by the UNSC at that point in the war to Earth: a very massive Covenant combined armada, presumably both larger than the [[Fleet of Particular Justice|one]] used during the Fall of Reach and containing at least over three hundreds ships – including the remaining loyalist starships and fleets of the [[High Charity defense fleet]] – as the final contingent of his forces.{{Ref/Reuse|truthsfleet}}{{Ref/Site|Id=dreadnought|URL=https://www.halowaypoint.com/en-us/universe/vehicles/dreadnought|Site=Halo Waypoint|Page=Dreadnought|D=25|M=07|Y=2021}}{{Ref/Site|Id=dreadnought|URL=https://www.halowaypoint.com/en-us/universe/vehicles/dreadnought|Site=Halo Waypoint|Page=Dreadnought|D=25|M=07|Y=2021}}{{Ref/Novel|Id=hbc286|BC|Page=286 (Google Books)|Quote=He has taken what is left of the Covenant fleets and is heading for the human world, Earth. He is seeking the Ark.|Quotee=[[G'torik 'Klemmee]]}} The fleet would later breach the Lunar perimeter,{{Ref/Reuse|H3CN}} and then engage the [[UNSC Home Fleet]], which was already weakened by the previous invasion fleets over Earth, at some point prior to the Forerunner Dreadnought's arrival on Earth as the November 17 dawned.{{Ref/Level|Id=H2GJ|H2|[[The Great Journey (level)|The Great Journey]]}}


Shortly after the Chief's arrival, however, the outpost was discovered and quickly [[Battle of Crow's Nest|attacked by Covenant forces]]. After the base was taken over, the UNSC forces decided to destroy it using [[Crow's Nest Bomb|a bomb]], killing all the Covenant in the base. The Master Chief activated the bomb and was barely able to escape the explosion.
Whilst on [[Installation 05]], [[Commander]] [[Miranda Keyes]], [[Sergeant Major]] [[Avery Johnson]], and [[Arbiter]] [[Thel 'Vadam]] learned of the Prophet of Truth's intentions and departed the installation after the ''Anodyne Spirit'' while [[Rtas 'Vadum]] and most of [[Fleet of Retribution|Sangheili vessels]] under his command, comprising hundreds of ships, stayed behind on Installation 05 in order to quarantine and glass the Halo ring as well as quarantine High Charity in order to stop the escape of the [[Flood]] and the Gravemind from both the Halo and the city. Upon arrival at Earth on or just before November 15 aboard one of the Sangheili vessels,{{Ref/Reuse|lootcrate2}}{{Ref/Marketing|Id=LongRoad|Halo Waypoint|The Long Road Home}} they took up station in an old military base, [[Crow's Nest]], near Voi, and waited for John-117 to arrive.{{Ref/Reuse|H3CN}}{{Ref/Note|The Sangheili vessel carrying the Arbiter and the survivors of ''In Amber Clad'' arrived at Earth at least two days before Truth's Keyship, despite the latter leaving Delta Halo's orbit well ahead of the former. While this may appear strange given that Forerunner slipspace travel can vastly outpace that of the Covenant, the apparent discrepancy is explained by the Keyship exiting slipspace in the outer edges of the Sol system on November 8 and not landing on Earth until November 17. The reason behind this delay was that the Covenant soldiers inside the Keyship focused on killing John instead of proceeding, as they feared he would kill the Prophet of Truth.}} On November 15, Sergeant Major Johnson and the [[Office of Naval Intelligence|ONI]] interrogated [[Quick to Adjust]], a rebel [[Huragok]] since the Regret's attack on New Mombasa, to share information he had and relating to the [[Portal at Voi]].{{Ref/Reuse|lootcrate2}}{{Ref/Reuse|H3RCoast}}


Scattered, the UNSC forces then [[Battle of Tsavo Highway|fled the base]] along the [[Tsavo Highway (Location)|Tsavo Highway]], regrouping on their way out. Soon, they were given orders by Commander Keyes to head to the city of [[Voi]]. Spartan-117, with the help of Marines, crushed Covenant resistance on the Highway, clearing the way to Voi.
====Turning the tide====
{{Main|Scramble onboard Forerunner Dreadnought|Battle of Cleveland}}
{{Quote|no=two|Colonel James Ackerson|Shipmaster Lepidus|q1=See, that's why you're going to lose. All your pomp and thinking you're right about everything... when it comes down to it you're just dumb and arrogant and--|q2='''That's''' why we'll win.|[[Colonel]] [[James Ackerson]]'s last words before his demise at the hands of [[Lepidus]], and Lepidus after executing James.{{Ref/Reuse|HUI4}}}}
[[File:H2A - Earth and Dreadnought.jpg|left|300px|thumb|The Forerunner Dreadnought ferrying Truth jumps into Earth high orbit, where the final space battle continues to rage between opposing fleets over the planet.]]


=== Counterattack ===
At some point between November 15 and 16,{{Ref/Note|''Halo: Uprising'' indicates that John-117 and Ruwan's actions was both concurrent. While ''Halo 2: Anniversary'' and ''Halo 3'' show that Kenya, which was aimed by the Forerunner Dreadnought, was still in night at the time that the ship jumped into Earth and then landed on the Portal at Voi in November 17 in the morning on the [[Africa|African continent]], the Battle of Cleveland in ''Halo: Uprising'' seemingly took place on the very early morning, if not evening, on the [[North America|North American continent]] and still ongoing even after the sunrise on the Cleveland city, which would be likely and realistic that the battle took place at least one day before November 17, although the URNA is oddly still in daylight in the comic when the Forerunner Dreadnought arrived at Earth.}} while John-117 was still hunting the Prophet of Truth, the UNSC already lost their garrison on [[Mars]] at the hands of the [[Fleet of Furious Redemption]] following the [[Battle of Mare Erythraeum]],{{Ref/Reuse|HUI1}} which led to a dramatic increase in Covenant force deployments on Earth as the Covenant began to concentrate more of their forces on the planet, worsening the siege.{{Ref/Comic|Id=HUI3|HU|Issue=3}} Despite the dramatic increase in Covenant deployments, the works of [[Colonel]] [[James Ackerson]] in the Battle of Mare Erythraeum helped buy UNSC ground forces on Earth precious time.{{Ref/Book|Id=ackerson|Book=[[Halo Encyclopedia (2009 edition)]]|Page=??}} By this point, the UNSC would be hardly faced with impossible odds with no hope in sight against the full might of Covenant forces on Earth.{{Ref/Reuse|Id=HUI4}}
{{Quote|Marines, the Prophet of Truth doesn't know it yet, but he's about to get kicked right off his throne. You will take our city back. And drive our enemy into the grave they've been so happily digging. One final effort is all that remains.|Admiral Terrence Hood}}


[[File:Voi_assault_4.png|thumb|right|The Portal begins to open after the UNSC's failed assault on the Dreadnought.]]
Shortly after the loss of Mars, Covenant forces also [[Battle of Cleveland|invaded the city]] of [[Cleveland]] on Earth without intending to destroy it or kill civilians, unlike other cities, looking for a supposed Forerunner artifact known as the "[[Key of Osanalan]]" as told by a wounded and Covenant-tortured Colonel [[James Ackerson]], who was captured aboard [[Lepidus]]'s vessel, the ''[[Triumphant Declaration]]'', and that was a necessary component for the firing sequence of the [[Halo Array]]. Additionally, his plan would help the population to escape the city and stall the Covenant assault on Earth and prevent the planet's [[Glassing|fall]] to the Covenant like [[Reach]].{{Ref/Comic|Id=HUI1|HU|Issue=1}} During the battle, many civilians were [[Prisoner of war|captured]] and interrogated at [[Jacobs Field]] in [[Old Cleveland]] for the Key of Osanalan,{{Ref/Reuse|HUI1}} but later evacuated following a surprise attack from a [[Orbital Drop Shock Troopers|ODST]] team that suddenly killed most of the Covenant forces.{{Ref/Comic|Id=HUI2|Comic=Halo: Uprising|Issue=[[Halo: Uprising Issue 2|2]]}}
Upon reaching [[Voi]], the [[Humans]], with almost all organization collapsing, launched one last desperate plan. With the help of the Master Chief, the human forces destroyed a small section of the defenses around Truth and the artifact, allowing Lord Hood to lead the last reserves of ships in an attempt to destroy it.


Nothing came out of this however, because the human ships did seemingly no damage to Truth's ship, who activated the artifact, creating a large Slipspace portal into which most, if not all of the Covenant Loyalist ships on Earth retreated.
Arriving in a large chamber aboard the keyship ''Anodyne Spirit'' with the Prophet of Truth and a pack of Jiralhanae soldiers and [[Jiralhanae Honor Guardsman|honor guardmens]] being present, John-117 attempted to kill the Prophet remotely via a {{Pattern|Vostu|carbine}}, as soon as the Spartan was then attacked by a [[Kig-Yar Sniper]] and the Prophet escaped, forcing John-117 to confront and engage a number of Jiralhanae warriors. While the Spartan was believed to be [[Missing in action|dead]], the Prophet of Truth orders the crew of the Forerunner Dreadnought to jump further in-system and finally arrived at Earth in high orbit on November 17, spearheading the final contingent of Truth's forces as the final space battle is still raging and the ship was then surrounded by the massive space engagement.{{Ref/Reuse|H2GJ}}{{Ref/Reuse|HUI4}}  During which, John-117, emerged once again, broadcast to the UNSC, confirming his presence and his information regarding his situation.{{Ref/Reuse|HUI4}}


=== Flood on Earth ===
At the outcome of space engagements, almost the entire [[UNSC Home Fleet]], hence many entire smaller fleets, had been utterly overrun by the outnumbering and outgunning Covenant naval forces, though it was likely that most of the overwhelming Covenant fleet, mostly the capital ships, was in return destroyed by the UNSC defenders, mainly due to Earth's formidable and fierce defense and Hood's brilliant leadership, especially thanks to multiple defending [[Magnetic Accelerator Cannon#Mark V|"Super" MAC]]-equipped [[orbital defense platform]]s,{{Ref/Reuse|H2TA}} throughout the Battle for Earth.{{Ref/Level|Id=H3CN|H3|Crow's Nest}} After demolishing most of Earth defenses, the recently-victorious Covenant fleet then lead a colossal [[orbital bombardment|bombardment]] on Earth, causing extreme terrestrial casualties and damaging much of the surface of the planet.{{Ref/Reuse|H3CN}} The ''[[Cairo Station (station)|Cairo Station]]'' survived the final space battle relatively intact, albeit left damaged.{{Ref/Reuse|H2GJ}}
{{Quote|Quickly! Let us find their ship. Make short work of this abomination!|Thel 'Vadam}}
[[File:Voi 7.jpg|thumb|right|The Flood-infected Battlecruiser arrives.]]
At this exact moment, a [[Flood]]-[[Unnamed Flood-Captured Battlecruiser|controlled ship]] arrived at Earth, crashing in Voi. It infested the area around the Portal, quickly spreading throughout the city of Voi.  


The UNSC decided to contain the infestation by detonating the Flood ship's reactor, a task which was assigned to Spartan-117. Soon after this, Covenant Separatists arrived from their quarantine of [[Delta Halo]], having chased the Flood ship. They deployed teams of Elites to the ground, to retrieve the UNSC AI construct, Cortana, which they believed was being held inside the Flood-controlled ship, and after this, glass the area to destroy the Flood threat. Spartan-117 and the Arbiter, with the assistance of several Elites, fought their way through the Flood-infested city to retrieve Cortana's message (which they thought was Cortana) from the Flood ship, after which they were extracted to the Separatists' flagship, the [[Assault Carrier|Carrier]] ''[[Shadow of Intent]]'', as the city of Voi and surrounding countryside were glassed by the Separatist fleet, destroying the Flood threat.
[[File:S117returnstoEarth2552.jpg|300px|thumb|John-117 and the Dreadnought entering Earth's atmosphere before crashing on East Africa.]]
James' civilian brother, [[Ruwan Ackerson]] who was aware of what the Covenant are looking for during the Covenant interrogation at Cleveland, along with [[Myras Tyla]], were both brought to a secret UNSC forces to meet [[Sergeant]] [[Twyker]] in attempt to repel the Covenant forces in Cleveland.{{Ref/Reuse|HUI1}}{{Ref/Reuse|HUI2}} Ruwan was injected with [[Tykos 30]], an organic tracking device, as Tyla and the remaining civilians were evacuated. He was then taken to [[Chagrin Falls]], where a [[Jiralhanae Chieftain]] demanded that Ackerson relinquish the Key of Osanalan and an army of Jiralhanae surrounded him. However, Ruwan told them ''he'' was the Key, which confused the Covenant and brought him aboard an orbiting {{Pattern|Ket|battlecruiser}}, the ''[[Harbinger of Piety]]'', before the [[Minister of Inquisition]]. There, the Minister vows to spare Earth from the Covenant occupation in exchange for knowledge of the apparent "key". Aboard the Forerunner Dreadnought, John-117, unable to assassinate the Prophet of Truth and take control of the Forerunner Dreadnought's trajectory, was informed that the ''Harbinger of Piety'' that was holding the "key" is to be destroyed. Since the ship was near the keyship, the Spartan was ordered by Twyker to find a way off the Forerunner Dreadnought to avoid being caught in the impending destruction of the cruiser. The Master Chief was then ordered to find a way to return to Earth quickly as the Forerunner Dreadnought began to enter Earth's atmosphere.{{Ref/Reuse|HUI4}} While the Minister was still interrogating Ruwan, the ''[[Nassau Station]]'' proceeded to remotely shoot at the ''Harbinger of Piety'' with a single shot from its [[Magnetic Accelerator Cannon|MAC]] gun, destroying instantly the cruiser and killing everyone aboard, including the Minister of Inquisition and Ruwan Ackerson. Though, Twyker's worries was proven ill-founded due to Forerunner Dreadnought remaining unharmed following the ''Harbinger of Piety''{{'}}s destruction.{{Ref/Reuse|HUI4}}


== Aftermath ==
After that a furious Lepidus was aware of the loss of ''Harbinger of Piety'' and the Key of Osalanan was in fact turned out to be a hoax perpetrated by Colonel [[James Ackerson]] while openly mocking the Covenant for their arrogance, the Jiralhanae [[shipmaster]] decapitated the colonel aboard the ''[[Triumphant Declaration]]'' over Mars. Ultimately, the attack on Cleveland was repelled due to James's act of self-sacrifice, and that of Ruwan.{{Ref/Comic|Id=HUI4|Comic=Halo: Uprising|Issue=[[Halo: Uprising Issue 4|4]]}} Though the Martian valiant defense forces were crushed during the [[Battle of Mare Erythraeum|Battle of Mars]], they are credited for delaying Covenant forces from pressing their siege on Earth.{{Ref/Site|Id=mars|URL=https://www.halowaypoint.com/en-us/universe/locations/mars|Site=Halo Waypoint|Page=Mars|Y=2021|D=14|M=06}} Shortly after the Covenant worldwide bombardment, the Earth human population was swiftly reduced to only 200 million individuals, initially around 10 billion prior the Covenant assault with heavy casualties and a major evacuation effort and the sudden change after Truth's arrival.{{Ref/Game|Id=bestiarum|Game=Halo 3|What=[[Bestiarum]]}}{{Ref/Book|Id=ENC|Book=Halo Encyclopedia: The Definitive Guide to the Halo Universe|Page=282}}{{Ref/Site|Id=populateTwit|URL=https://twitter.com/Mr_Admirals/status/429062324737953792|Site=Twitter|Page=@HaloWaypoint Hey, what was the population of Earth prior to November 2552?|Y=2014|D=04|M=02}} The refugees of Cleveland, including Tyla, were evacuated to a relief camp in [[Akron]].{{Ref/Reuse|HUI4}}
{{Quote|One single Flood spore can destroy a species. Were it not for the Arbiter's counsel, I would have glassed your entire '''planet'''!|Rtas 'Vadum}}
{{clear|right}}
[[File:Final_meeting_7.png|thumb|right|UNSC and Covenant Separatists hold their meeting aboard the ''Shadow of Intent'' after the battle.]]
[[File:UNSCHitsDreadnought-large.jpg|thumb|left|250px|Immediately after the Type-27 Mantis deployments has been cleaned, the UNSC frigates initiates an attack on the Forerunner Dreadnought.]]
After retrieving the storage device which was believed to contain Cortana, Spartan-117, met by the monitor 343 Guilty Spark, joined the remaining UNSC Navy leadership, Lord Hood and Commander Keyes, aboard the ''Shadow of Intent'', to see if Cortana's damaged storage device could be repaired.
====Battle for the Portal====
{{Main|Battle of Kenya}}
{{Quote|Marines, the [[Prophet of Truth]] doesn't know it yet, but he's about to get kicked right off his throne. You will take our [[Voi|city]] back. And drive our enemy into the grave they've been so happily digging. [[Battle of Voi|One final effort]] is all that remains.|[[Fleet Admiral]] [[Terrence Hood]]}}


It turned out to be just a message, recorded by Cortana who was held captive by [[Gravemind]] in High Charity. Cortana had acquired information about the Portal, and that on its other side there was a solution to stop the Flood once and for all. She also warned about the flood-infested High Charity, which was approaching Earth. From this, Admiral Hood decided to remain on Earth and desperately attempt to defend it against the Flood, while the Covenant Separatists, along with UNSC forces led by Commander Keyes would go through the Portal, as they realized there was no way to win if the Flood would attack humanity's homeworld.
As the Dreadnought entered Earth's atmosphere, John-117 left the ship by leaping off during re-entry and crashing into the [[East African Protectorate|East-African]] jungle.{{Ref/Level|Id=H3S117|Game=Halo 3|Level|Sierra 117}} By this time most of Truth's remaining forces arrived to the now-uncovered Ark portal at Voi and had set up heavy [[Skar'wa-pattern Mantis|AA batteries]] and other defenses near [[Voi]] and in the surrounding area to protect their work at the Portal.{{Ref/Reuse|H3CN}}{{Ref/Reuse|lootcrate2}} During Spartan-117's re-entry, a pair of ODSTs used a [[laser designator]] during [[Battle of Sector Six|an operation]] in [[Sector Six]] (near the [[Pakistan]]-[[wikipedia:Afghanistan|Afghanistan]] border) to track the Spartan's fall.{{Ref/Film|Id=landfall|Film=Halo: Landfall}} The data made it easier for Sergeant Johnson and Thel 'Vadam to locate the Spartan. After [[Recovery of John-117|making their way through the jungle]], they were extracted by a [[D77H-TCI Pelican|dropship]], despite Covenant resistance, and taken to [[Crow's Nest (location)|Crow's Nest]].{{Ref/Reuse|H3S117}} The Covenant tracked them back to the base, however, and [[Attack on Crow's Nest|launched an attack]].{{Ref/Reuse|H3CN}}


Apparently, the Flood attack to Earth never came. Upon arriving at Earth, High Charity went straight through the Portal, without launching an assault on Earth. It eventually arrived at Installation 00, joining the battle raging on the installation.
Commander Keyes proposed to destroy the Covenant anti-air defenses at [[Voi]], allowing low flying [[Charon-class light frigate|frigates]] to strike the Forerunner Dreadnought now landed on the Portal. [[Fleet Admiral]] [[Terrence Hood]] had only a few frigates left, but was willing to commit to the risky plan with [[John-117]]'s recovery.{{Ref/Reuse|H3CN}}


Despite having suffered enormous military and civilian losses, the UNSC regained control of Earth and with the defeat of the Covenant Loyalists and the Flood on Installation 00, the war finally ended in a human victory. The humans have initiated reconstruction in order to repair the damage inflicted on humanity as a result of the Battle of Earth.
Just before the UNSC offensive began, the Prophet of Truth hijacked Crow's Nest operations center monitors, broadcasting a message to the base, promising the reduction of Earth to [[glassing|glass]] by the Covenant, and then the Covenant attacked Crow's Nest. Miranda Keyes evacuated and destroyed the base with a [[Improvised UNSC bomb|bomb]] before it could be occupied. John-117 barely managed to escape the destruction of the facility but met up with [[Gunnery Sergeant]] [[Reynolds]] and set out in [[M12 Force Application Vehicle|Warthogs]] on [[Tsavo highway (location)|Tsavo Highway]] to head for [[Voi]], as did scattered UNSC forces, [[Assault on the Tsavo Highway|engaging]] Covenant heavy vehicles along the way.{{Ref/Reuse|H3CN}}{{Ref/Level|Id=H3Tsavo|H3|Tsavo Highway}}


==Timeline==
At Voi, the UNSC broke through Covenant defenses, as John-117 and [[Thel 'Vadam]] disabled the last Covenant AA battery. With the path to the Portal cleared, Fleet Admiral Hood ordered [[Battle Group Victory|at least seven frigates]] and multiple [[GA-TL1 Longsword|Longswords]] to attack the Forerunner Dreadnought. Despite [[Magnetic Accelerator Cannon|MAC]] fire, the enemy ship remained intact and was able to activate the Portal. The Dreadnought and the surrounding Covenant ships departed Earth through the resulting Slipspace portal.{{Ref/Level|Id=H3Storm|H3|The Storm}} Covenant battlenet cohesion broke following Truth's departure, allowing UNSC forces in the southwest URNA to begin a major counteroffensive as part of their [[URNA Southwest Campaign|ongoing campaign]].{{Ref/Reuse|lootcrate2}}
The following is a timeline of the battle.
{{clear|left}}
[[Image:UNSC Home Fleet.JPG|thumb|right|250px|The [[UNSC]] [[UNSC Home Fleet|Home Fleet]] before the [[Covenant]] arrive.]]
[[File:Voi 7.jpg|thumb|250px|left|Master Chief and the Arbiter witness the arrival of a battlecruiser, but infested by the Flood.]]
===Flood on Earth===
{{Main|Outbreak on Earth}}
{{Quote|Quickly! Let us find their [[Indulgence of Conviction|ship]]. Make short work of this [[Flood|abomination]]!|Thel 'Vadam}}


'''October 20, 2552'''
While the battle for Earth raged, the [[Fleet of Retribution]] had been attempting to maintain a quarantine of the [[Flood]]-infested ''[[High Charity]]'' and [[Installation 05]]. The Flood-controlled ''[[Indulgence of Conviction]]'' escaped and arrived at Earth as the Prophet of Truth departed through the Portal. The ship crashed in Voi and began infesting the area. John-117 and Thel 'Vadam quickly made for the crash site intending to overload the ship's reactor. The explosion would destroy the city but would hopefully stop the spreading infestation as well.{{Ref/Level|Id=H3Flood|H3|Floodgate}}
*Lord Hood awards [[Master Chief|SPARTAN-117]], [[Sergeant Johnson]] and [[Jacob Keyes]] (posthumously) medals for their efforts during the [[Battle of Installation 04]] and subsequent actions. [[Miranda Keyes]] received the medal posthumously given to her late father, Captain Keyes. The ceremony takes place on [[Cairo Station]].
*A Covenant task force of 2 [[Assault Carrier]]s and 13 {{Class|CCS|Battlecruiser}}s exits Slipspace just beyond the range of the MAC satellites.
*It is speculated that at this time, the warning sirens heard in the [[ilovebees]] storyline begin shortly after this Covenant sighting.
*[[Fleet Admiral Harper]], in charge of the Earth defense fleet, responds rapidly with an attempt at a counter attack, preparing all available vessels to engage the Covenant. This order is overruled by Lord Hood.
*The Covenant launch  waves of boarding craft toward the orbital defense stations. Several UNSC vessels and stations are destroyed by boarding Covenant forces.
*The MAC platform [[Malta Station|Malta]], after sending elated communications that they have repelled all Covenant boarders, is annihilated in a cataclysmic explosion. The shockwave of which is felt by the crew of the Cairo station, demonstrating just how large the detonation was. Shortly afterward the [[Athens Station|Athens]] MAC platform experiences the same fiery fate.
*It is deduced that both explosions came from within each of the stations, the Covenant boarding parties had brought with them a bomb, detonated close to the MAC magazine housing causing multiple secondary explosions as the ammunition is cooked-off. As a result all personnel on orbital platforms redouble their efforts.
*The [[Cairo Station|Cairo]] MAC platform is saved by the heroic efforts of Spartan-117, single-handedly disarming (with the aid of Cortana who was acting as the platform's AI) and removing the [[Covenant Bomb]] from the orbital platform. The Master Chief removes the explosive device by jettisoning it, along with himself, out of a docking bay airlock. He then uses this same bomb to destroy a Covenant Assault Carrier that had just broken through the UNSC's defensive perimeter.
*During a protracted naval engagement a Covenant Assault Carrier blows through the Malta's debris field and heads straight for Earth. It comes to a stop above the city of [[New Mombasa]] in the [[East African Protectorate]].
*From there the first Covenant troops to ever set foot on humanity's homeworld engage in the first land engagement of the Battle of Earth.
*UNSC forces engage the Covenant on the ground and wage a bloody street-by-street skirmish in both Old and New Mombasa.
[[Image:Halo5.png|250px|thumb|right|Marines drive boarders off of the ''Cairo''.]]


*After some time of ground battle and complete evacuation of the the Mombasa area, SPARTAN-117, along with several Marines, are sent to crush the Covenant resistance in the city and infiltrate the [[Prophet of Regret]]'s [[Regret's Carrier|Assault Carrier]] above the city, backed up by an [[Orbital Drop Shock Trooper|ODST]] force which would supposedly be inserted from orbit, though their mission was actually separate.
[[File:H3 Floodgate ODST Concept.jpg|thumb|250px|To prevent the sudden loss of Earth to the alien infestation, UNSC forces engage the Flood before being reinforced by the Sangheili forces.]]
*The arduous ground war is ended with the Prophet of Regret's Assault Carrier making a Slipspace jump only hundreds of meters above the city of New Mombasa. His motivations for doing so were, at the time, unknown. The Assault Carrier is followed by the {{UNSCShip|In Amber Clad}}, which, upon arrival begins the [[Battle of Installation 05]].
A [[battle group]] of [[Fleet of Retribution|Sangheili ships]], led by [[Fleet Master]] [[Rtas 'Vadum]] aboard the [[CAS-class assault carrier|assault carrier]] ''[[Shadow of Intent]]'', arrived in pursuit of the Flood. The Sangheili believed [[Cortana]] was aboard the Flood ship; Rtas 'Vadum could give his own troops and the UNSC only a little time to recover the AI before Voi and the surrounding area were cleansed by [[glassing]]. John-117 found the small storage device containing the AI; he entrusted to [[343 Guilty Spark]] for repairs and they were extracted by [[Kez'katu-pattern Phantom|Phantom]] to ''Shadow of Intent''.{{Ref/Reuse|H3Flood}}
*This atmospheric Slipspace jump severely damages the City of New Mombasa. The ODSTs' [[Single Occupant Exoatmospheric Insertion Vehicle|drop pods]] are scattered around the city, most of them presumably killed by the slipspace rupture.
*Immediately following the slipspace event, Truth's backup fleet arrives and engages UNSC forces in orbit. The Jiralhanae overtake the Sangheili on both the ground and in space while continuing to engage the UNSC. A [[Jiralhanae]]-led occupation force is also inserted into New Mombasa. The surviving [[UNSC]] and [[New Mombasa Police Department|NMPD]] clash with this force for control of the city.  


'''October 21, 2552'''
Thel 'Vadam convinced Rtas 'Vadum to exercise restraint when glassing. Thus, only an area of [[Africa]] was glassed instead of a much wider area.{{Ref/Reuse|H3Flood}}
*Eventually, the city of New Mombasa occupied and its surroundings [[Glassing|glassed]] by the Covenant, to uncover the Ark Portal, ending the battle of Mombasa in a Covenant victory. However, the UNSC manages to extract a defecting [[Huragok]] from the city and can use it to gain intel on the Covenant forces' goals.


'''October 20 through November 3, 2552'''
Shortly after the initial skirmishes with the Flood, the Flood-infested ''High Charity'' jumped out of slipspace further out in the Sol system. Shortly after discovering the presence of the Portal at Voi, the Gravemind conducted an arcane bridging maneuver allowing it to transport the former holy city to the Ark from the vicinity of [[Mars]] rather than physically accessing the portal on Earth; the human homeworld thus escaped further Flood contamination.{{Ref/Site|Id=Bulletin924|URL=https://blogs.halowaypoint.com/en-us/blogs/headlines/posts/the-halo-bulletin-9-24-14|Site=Halo Waypoint|Page=The Halo Bulletin: 9.24.14|Y=2014|M=9|D=24}}
*The Spartan [[Blue Team]] gets deployed to defend Earth during [[UNSC In Amber Clad|In Amber Clad]]'s disappearance. They participate in numerous combat missions around the world, including the [[Battle of Ross Island]] in the [[Antarctica]].
[[File:H3 - Chasing Truth.png|thumb|left|250px|The Fleet of Retribution leaves through the Portal while Fleet Admiral Hood stays on Earth via Pelican.]]
===Dealing with the Flood===
{{Quote|no=two|1=Terrence Hood|q1=And you, Shipmaster, just glassed half a [[Africa|continent]]! Maybe the Flood isn't all I should be worried about.|2=Rtas 'Vadum|q2=One single [[Flood spore]] can destroy a species. Were it not for the Arbiter's counsel, I would have glassed your entire '''planet'''!|3=Admiral Terrence Hood and Rtas 'Vadum, after the Flood infection of Voi.}}


'''November 3, 2552'''
Admiral Hood and Commander Keyes joined John-117, Thel 'Vadam, and Rtas 'Vadum aboard ''Shadow of Intent'' where 343 Guilty Spark repaired Cortana's damaged storage device. The device contained only a message from the AI; it warned them that the Flood-infested ''High Charity'' was en route to Earth, but that beyond the Portal there was a [[Installation 08|solution]] to the Flood without firing the [[Halo Array]].{{Ref/Reuse|H3Flood}}
*[[SPARTAN-104]], [[SPARTAN-058]], and [[SPARTAN-043]] partake in the [[Battle of Havana]]. Shortly thereafter, they depart for [[Onyx]].
*The Forerunner Dreadnought, with the Prophet of Truth aboard, departs High Charity for Earth.


'''November 8, 2552'''
Admiral Hood was determined to make his stand against the Flood on Earth. The Sangheili believed this to be foolish; there was little hope Earth could withstand a [[Flood spore]], never mind a full Flood invasion, and they decided to place faith in Cortana and journey beyond the Portal. John-117 and Keyes convinced a weary Hood to allow them, and a UNSC task force to accompany the Sangheili.{{Ref/Reuse|H3Flood}}
*The Forerunner Dreadnought arrives in the Sol system and proceeds to Earth at near-relativistic speeds.
[[File:Halo3 E3 TRAILER 2007 720p30 ST 6300Kbps 002 0001.jpg|300px|thumb|right|The Covenant Separatist ships glass Voi and its surroundings to contain the Flood threat.]]
'''November 17, 2552'''
*The Forerunner Dreadnought arrives at Earth. Spartan 117 ejects, landing in Kenyan jungle. In the following morning, Spartan-117 is recovered by a group of Marines led by Sergeant Johnson.  
*The Marines, with Spartan-117, make their way to Crow's Nest, where a plan for a counterattack is devised. The base is invaded by the Covenant, and eventually destroyed by the UNSC.
*The UNSC forces regroup along Tsavo Highway, eventually assaulting the Covenant-held town of Voi.
*UNSC Forces neutralize Covenant Anti-air defenses in Voi. An attack group from the UNSC Home Fleet initiate the assault on the Forerunner Dreadnought, with no effect. The Ark Portal is activated, Covenant Loyalist forces flee to Installation 00 through the Portal.
*Immediately thereafter, a Flood-controlled ship emerges from Slispace over Voi, crashing to the town. Flood infestation starts spreading around the region. Covenant Separatist fleet, having given chase, arrives at Earth and glasses Voi as well as its surroundings.
*A transmission from UNSC AI Cortana is retrieved from the Flood ship. The Covenant Separatist forces, with several UNSC forces with them, go through the Portal to the Ark.


==Participants==
The final stand Hood expected never came; the next day, ''High Charity'' and the Flood arrived in the Sol system, but instead performed a Slipspace jump from Mars orbit to [[Installation 00]], an action that spared Earth from a second contamination.{{Ref/Site|D=01|M=6|Y=2020|URL=https://forums.halowaypoint.com/yaf_postsm2959975_Query--Catalog.aspx#post2959975|Site=Halo Waypoint|Page=Query: Catalog}} It was at the massive installation that the Flood and the remnants of the Covenant were ultimately [[Battle of Installation 00|defeated]] by the UNSC and Sangheili three weeks later, bringing an end to the [[Human-Covenant War|war]] that nearly extinguished the [[human]] race.
{{col-begin}}
{{clear}}
{{col-2}}
===Covenant remnants===
===Ships===
{{Main|URNA Southwest Campaign}}
====[[UNSC]]====
On November 18, Jiralhanae forces spotted the {{UNSCShip|Crassus}} and its escorts at sea and engaged it using a mixture of [[dropship]]s and [[Qavardu Workshop Prowler|war-sled]]s. While initially successful, the boarding stalled due to the ship's hallways being smaller than their bodies. Lacking any progress, the Jiralhanae destroyed the flight tower and left, leaving the carrier afloat.{{Ref/Site|Id=CFStrike|URL=https://www.halowaypoint.com/news/canon-fodder-ship-strike|Site=Halo Waypoint|Page=Canon Fodder - Ship Strike|D=20|M=04|Y=2023}}
*[[Malta Station|ODA-143 ''Malta Station'']]
*[[Cairo Station|ODA-142 ''Cairo Station'']]
*[[Athens Station|ODA-144 ''Athens Station'']]
*[[Nassau Station]]
*{{UNSCShip|Dusk}}
*{{UNSCShip|Coral Sea}}
*{{UNSCShip|In Amber Clad}}
*{{UNSCShip|Paris}}
*{{UNSCShip|Redoubtable}}
*{{UNSCShip|Aegis Fate}}
*{{UNSCShip|Forward Unto Dawn}}
*{{UNSCShip|Say My Name}}
*{{UNSCShip|Tokyo Rules}}


====[[Covenant]]====
With the majority of Truth's forces now bound for the Ark, some of the remaining Covenant forces on Earth fortified themselves in [[Arizona]], [[URNA]]. On December 3, Admiral Harper of the Fifth Fleet initiated [[Operation: MARSH FLASH]], which eradicated clusters of Jiralhanae leadership attempting to activate an artifact here. The UNSC was then finally able to repel or wipe out the remaining Covanant invader forces on the planet and the system, effectively bringing an end to the invasion. Despite suffering enormous military and civilian losses, the UNSC retained control of Earth.{{Ref/Reuse|loochapt2}} Marines involved in mopping up Jiralhanae holdouts employed the "Rex" [[Visual Intelligence System, Reconnaissance|VISR]] system.{{Ref/Game|H5|Detail=Rex VISR description}}
*[[Forerunner Dreadnought]]
*''[[Pious Inquisitor]]'' (Pre-Great Schism)
*''[[Regret's Carrier]]''
*''[[Harbinger of Piety]]''
*''[[Triumphant Declaration]]''


===Units===
==Aftermath==
====UNSC====
{{Quote|Before 2552, there was no way anything like that could happen on Earth. On one of those distant planets in the outer colonies, maybe. But an attack on Earth? Couldn't happen. Until it did. It's called [[glassing]]. Covenant warships rain plasma down on a planet until everything and everyone on the surface melts. Usually, it's complete world destruction. Earth only got a taste. The prolonged orbital bombardment destroyed East Africa, killing millions before it ended. None of us were safe anymore.|[[Benjamin Giraud]]{{Ref/Game|Game=Hunt the Truth|Detail=Episode 01: A Hairline Fracture}}}}
=====UNSC Marine Corps=====
*[[2nd Shock Troops Battalion]] (Unknown Regiment)
*[[7th Shock Troops Battalion]] (Unknown Regiment)
**1st Platoon (Unknown Company and Regiment)
*[[3/1 Bravo]]
*[[405th]]
**A Company
*[[17th Marine Regiment]]
*[[77th Marine Regiment]]
*[[E2-BAG/1/7]]
*[[M/LAT-16]]
*[[S/VRC-8]]
*[[S4/BLCE/1/7]]
*[[S4/BRT/1/7]]
**[[Alpha Company, S4/BRT/1/7|Alpha Company]]
**[[Charlie Company, S4/BRT/1/7|Charlie Company]]


=====UNSC Navy=====
===Battle of Installation 00===
*[[UNSC Home Fleet]]
{{Main|Battle of Installation 00}}
*[[Second Fleet]]
{{Expand-section}}
*[[Seventh Fleet]]
*[[Sixteenth Fleet]]
*[[UNSC Navy|6th Battle Group]]
*[[Harper's Fleet]]


====Covenant====
===Rebuilding and Rebirth===
*[[Regret's Fleet]]
[[File:Attend2.PNG|thumb|250px|The aftermath of the Battle for Earth.]]
*[[Truth's Fleet]]
{{Main|Hillside Memorial|Project Rebirth}}
*[[Fleet of Furious Redemption]]
On [[2553#March|March 3, 2553]], a special ceremony on a hill over looking the Portal at Voi was held to honor the end of the war and those who had fallen.{{Ref/Level|H3|[[Halo (Halo 3 level)|Halo]]}}


====Covenant Separatists====
The rebuilding of Earth's infrastructure had begun in earnest as early as [[2553#January|January 2553]] in Sydney.{{Ref/Novel|Gla|Chapter=1}} Project Rebirth, an organized effort to rebuild also took place in [[Aranuka]]{{Ref/Reuse|loochapt2}} and [[Mombasa]]{{Ref/Generic|Id=Goldchief|[[McFarlane Toys/Halo Point Prizes]]|[[McFarlane Toys/Halo Point Prizes#Golden Master Chief|Master Chief Statue Press Release]]}} took place at some point, with works in Aranuka being done by [[2558]].{{Ref/Reuse|loochapt2}}
*[[Fleet of Retribution]]
{{clear}}


{{col-2}}
==Engagements==
===Personnel===
The battle of Earth had numerous engagements across the planet. Kenya, Cleveland, Havana, and the Southewestern URNA were battlefields. Fighting also took place at [[Sydney]],{{Ref/Reuse|glasslandsp.26}} [[Cairo]], [[Diego Garcia]],{{Ref/Reuse|encycearth}} [[Aranuka]],{{Ref/Novel|Id=loochapt2|Novel=Halo: Legacy of Onyx|Chapter=2}} the [[Yucatán Peninsula]],{{Ref/Reuse|goop.220}} [[Mount Erebus]],{{Ref/Reuse|goo204}} and [[Berkeley]].{{Ref/Reuse|axon12}}
====UNSC====
*[[Fleet Admiral]] [[Sir Terrence Hood]]
*Fleet Admiral [[Harper]]
*[[Unnamed UNSC Navy Captain]]
*[[Captain]] [[Veronica Dare]]
*[[Commander]] [[Richard Lash]]
*[[Lieutenant Commander]] [[Miranda Keyes]]
*[[Lieutenant Commander]] [[Julian Waters]]
*[[Lieutenant Commander]] [[Xaing Cho]]
*[[Lieutenant (UNSC)|Lieutenant]] [[Bethany Durruno]]
*Lieutenant [[Joe Yang]]
*Lieutenant [[Parisa]]
*[[Lieutenant Junior Grade]] SPARTAN [[Frederic-104]]
*[[Master Chief Petty Officer]] SPARTAN [[John-117]]
*[[Sergeant Major]] [[Avery Junior Johnson]]
*[[Gunnery Sergeant]] [[Pete Stacker]]
*[[Petty Officer Second Class]] SPARTAN [[Linda-058]]
*Petty Officer Second Class SPARTAN [[William-043]]
*[[Unnamed Marine Officer]]
*[[Staff Sergeant]] [[Marcus Banks]]
*[[Gunnery Sergeant]] [[Edward Buck]]
*Gunnery Sergeant [[Pete Stacker (Marine)|Pete Stacker]]
*[[Corporal]] [[Taylor H. Miles]]
*Corporal [[Palmer]]
*Corporal [[Perez]]
*Corporal [[T. Rymann]]
*[[Lance Corporal]] [[Kojo Agu]]
*Lance Corporal "[[The Rookie]]"
*Lance Corporal [[Morton]]
*Lance Corporal Pineada
*[[Private First Class]] [[Michael Crespo]]
*Private First Class [[Chips Dubbo]]
*Private First Class Locke
*Private First Class Galliard
*Private First Class Sullivan
*[[Private (UNSC)|Private]] [[McKenzie]]
*Private Emerson
*Private Jemison
*Private [[Scottlee]]
*Private [[S. Hartley]]
*[[Hospital Corpsman|Corpsman]] [[R. Coney]]


====Covenant====
[[Luna]], Earth's moon was also [[Battle of Luna|attacked]].{{Ref/Novel|HNB|Chapter=12}}
*[[High Prophet of Regret]]
*[[High Prophet of Truth]]
*[[Minister of Inquisition]]
*[[Lepidus]]
*[[Vergil]]


===Vehicles===
{{Engagements in the Battle for Earth}}
====UNSC====
*[[12-9F5]]
*[[957-A3]]
*[[Echo 51]]
*[[Kilo 23 (Pelican)|Kilo 23]]
*[[Oscar 6]]


{{col-end}}
==Timeline==
{{Main|Timeline of the Battle for Earth}}


==Additional Notes And Theories==
==Participants==
[[Image:Readout.jpg|thumb|Readout of the initial forces involved.]]
{{Main|Participants in the Battle for Earth}}
At the beginning of the battle, fifteen ships and their personnel, led by the [[Prophet of Regret]] were defeated by a much larger and more powerful human fleet and ground forces. The battle itself was caused by miscommunication and lack of co-ordination between members of the Covenant, specifically the failure of the [[Prophet of Truth]] to inform the Prophet of Regret that Earth was in fact very heavily and well defended. The lack of information available to Regret meant that he was surprised and outgunned by the human defenses.
Due to the prominence of Earth, and what had transpired prior to the battle, Earth possessed numerous UNSC assets. They clashed with several waves of Covenant forces.
 
UNSC High Command found it puzzling, to say the least, that a [[Covenant]] fleet of such small size, carrying a [[Prophet]], would be their first engagement in the defense of Earth. The fleet that glassed Reach was fifty times the size of this new threat. <ref>''[[Halo 2]]'', Lord Hood expresses his dismay saying "Something's not right. The fleet that destroyed Reach was fifty times this size."</ref> To attack such a heavily prized and defended world, a fleet of greater size than the fleet at Reach would be required.
 
Not only this, the fact that only one city on [[Earth]] was attacked left [[UNSC]] strategists baffled. At the bare minimum the invading force would have to attack and occupy multiple areas, providing at least some strategic benefit, synchronously. Given the Covenant's tactical history it seemed unlikely that they would be prone to overconfidence.
 
Compared to the invasion force at [[Reach]] the two simply did not match up. The Covenant force at Reach was not only massive in numbers, it was knowledgeable of the terrain. The invasion force at [[Earth]] was small and displayed confusion (not an attribute the Covenant are known for).
 
The fleet that attacked Reach even took their time glassing the surface prior to sending in ground forces. Again the fleet that attacked Earth did almost the exact opposite, rushing to get to the surface. These observations could suggest that this Covenant fleet was not an invasion fleet at all but rather a planetary reconnaissance, search, and dig team.
 
Although capable of combating a small colony and/or aggressive native lifeforms, the expeditionary fleet lacked the strength in force or numbers for a full-scale invasion attempt. Speculation arose that, following the Covenant's discovery of Delta Halo, they found some form of [[Forerunner]] technology that led them to the location of a [[Shield World]].
 
Another possible scenario explaining the events, but highly inadmissible due to lack of timeline during the events of [[Halo 2]], is that after the seizure of [[343 Guilty Spark (Monitor)|343 Guilty Spark]], and subsequent interrogation, the location of the end of their pilgrimage was located. Even if the specific name "Earth" was used by the [[monitor]], it would have raised no caution in the Covenant ranks; to their knowledge, the location of planet Earth was unknown to humans. It could be hypothesized that due to the assuming nature of Forerunner Monitors, Guilty Spark would have made no mention of Humans living there unless specifically asked.


There is also the suggestion that the Covenant were following a signal which emanated from the Forerunner [[Deep-Space Artifact]] brought to Earth aboard the ''[[Apocalypso]]'' when it was deactivated by [[Jersey Morelli]] <ref>20:35 of [[Axon Clips]] chapter 11</ref>. The burst of EMP, Slipspace, and Realspace signals could be what drew the Covenant to Earth. This would make sense if Regret's fleet came to Earth looking to recover the artifact and knew nothing about the planet itself. While it had been previously revealed that the Covenant knew the ''location'' of Earth, it is not known what value they assigned to it. To them, it may have simply been the location of the artifact in [[Chawla Base]], not the human home world.
==Production notes==
 
Many fans, as well as ''Halopedia'', used to regard the Battle of Earth as two separate battles. Namely, the "First" was believed to comprise the events of ''[[Halo 2]]'' and the "Second" was thought to cover the events of John-117's return at the beginning of ''[[Halo 3]]''. Later sources have established that Truth's reinforcements arrived just one day after Regret fled, indicating that the "two" battles were one and the same. However, the ''Halo Encyclopedia: The Definitive Guide to the Halo Universe'' (even the 2011 revised edition) lists them as two separate battles; this is one of several elements of the ''Encyclopedia'' that is seemingly lifted from this wiki.
The Covenant's extensive knowledge of the MAC stations orbiting Earth might be seen as evidence that the Covenant knew the planet was at least occupied by human forces. However, Covenant forces had already encountered such orbital "Super" MAC guns before, over Reach. Recognizing the serious danger these platforms represented the fleet halted just beyond their firing range to commence boarding and sabotage actions using smaller craft.
 
Although losses weighed more heavily on the Humans than the Covenant, the UNSC nevertheless fought a successful holding action at [[New Mombasa]]. However, it is probable that UNSC High Command deliberately neglected to tell the medium and lower ranks that the Covenant task force was really but a vanguard of a much larger invasion fleet that would surely be imminent now.
 
According to the [[Halo Encyclopedia]], "the entire population of Earth was cut in half as the first battle of Earth began." It does not however specify whether it means half the people on Earth were killed, or if a significant number were evacuated.<ref>Halo Encyclopedia page 282</ref>
 
Assuming that all of the battleclusters protecting Earth were protected by a fleet the same size as the one around Cairo, Athens, and Malta station ( 8 crusiers, 67 frigates), 3 staions per cluster = 30 clusters each with a fleet equal to harpers would equal 240 Crusiers and 2010 Frigates. If that was the size of the fleet it would have to be the vast majority of ships left in the UNSC Navy.
 
==Trivia==
*Based off the events of ''[[Halo 2]]'' and ''[[Halo 3]]'' and before the release of additional information in ''[[Halo: Ghosts of Onyx]]'' and later, ''[[Halo 3: ODST]]'', it was assumed that there were two separate Covenant invasions on Earth; Regret's failed invasion on October 20th and later, the arrival of Truth's forces in late November. As newer sources have shown, reinforcements sent by Truth arrived only mere hours after Regret's failed assault. Consequently, this led to classifying the battles as the "first" and "second" battles of Earth. This is also the way the battle is listed in the [[Halo Encyclopedia]].


==Gallery==
==Gallery==
<gallery>
<gallery>
Image:Mac.jpg|[[UNSC Frigate]]s launching an attack on the Forerunner Dreadnought.
File:H2A Terminals - Fleet at Io.jpg|The [[Fleet of Sacred Consecration]] arrives in the Sol System near ''[[Io Station]]''.
Image:Halo3 E3 TRAILER 2007 720p30 ST 6300Kbps 005 0002.jpg|A Frigate firing its MAC gun.
File:H2A-fleet readout.jpg|Lord Hood views a readout of the opposing fleets as they prepare to engage.
File:HomeFleetH2A.png|The UNSC Home Fleet prior to the arrival of the Covenant.
File:H2A - Battle of Earth from Cairo.jpg|The space battle as viewed from ''Cairo Station'' as the Home Fleet holds its ground against the Covenant assault.
File:UNSC Fleet.jpg|The Home Fleet engages the Covenant fleet above Earth in full force.
File:H2A-Battlecruisers Battle of Earth.png|{{Pattern|Ket|battlecruiser}}s engaging the UNSC Home Fleet above Earth.
File:H2AMinors.jpg|The Master Chief battles Covenant boarding parties on ''Cairo Station''.
File:Athensstation.jpg|Several ODPs were destroyed through the course of the battle in space.
File:Master Chief Collection - Chief with bomb.png|The Master Chief prepares to descend into Earth orbit with the Covenant bomb in hand as the space battle rages.
File:Master Chief Collection - Cruiser destroyed.png|A {{Class|Marathon|heavy cruiser}} is destroyed in Earth orbit by plasma fire from a Covenant [[CAS-class assault carrier|assault carrier]].
File:H2A - Marathon dies.jpg|The Chief glides past the UNSC cruiser as it explodes.
File:H2A - Carrier destroyed.jpg|The second assault carrier explodes as the Master Chief escapes in free fall.
File:H2A - InAmberCladEarth.png|The ''UNSC In Amber Clad'' descends towards Africa to aid in the ground battle unfolding.
File:H2A Metropolis Loadscreen.png|The Prophet of Regret's flagship holds position over New Mombasa as the battle for the city rages.
File:H2A - Pelicans.jpg|UNSC forces of the ''UNSC In Amber Clad'' approaching New Mombasa during the early stages of the Battle of Earth.
File:H2A - Warthogs.jpg|A convoy of Warthogs race through the streets of Mombasa to reinforce the UNSC forces moving against the Covenant occupational forces.
File:H2A-ScarabIncoming.jpg|The UNSC reinforcements are engaged by the Covenant Scarab as it lays waste to the cityscape of Old Mombasa.
File:Pelican and warthog.jpg|UNSC forces approaching New Mombasa during the early stages of the Battle of Earth in ''Halo 2''.
File:H2A - Scarab destroyed.jpg|The Scarab is destroyed by the Master Chief, stalling the Covenant assault.
File:H2A - Solemn Penance jumping.jpg|''[[Solemn Penance]]'' prepares to jump into slipspace above New Mombasa.
File:H2SSRupture.jpg|Regret's jump into slipspace initiates a massive shockwave of energy that consumes New Mombasa, causing widespread damage.
File:H2A - Mombasa consumed.jpg|The slipspace rupture consumes all of Mombasa.
File:H3ODST_MombasaBattle_Concept.jpg|''Halo 3: ODST'' concept art depicting UNSC and Covenant forces engaged in a firefight.
File:Fleetwatch.jpg|Covenant warships swarm into New Mombasa to resume excavation of the Forerunner artifact.
File:Excessionsatellite.png|Surveillance footage captures the Covenant glassing of New Mombasa, revealing the Portal and laying waste to the African landmass.
File:ODST Fast roping.png|ODSTs deploy into Cleveland to rescue the city's enslaved population.
File:Battle_of_Earth_Main.jpg|The UNSC Home Fleet engages newly-arrived Covenant forces led by the Prophet of Truth.
File:H3 Sierra 117 Reynolds captured.jpg|Reynolds being interrogated by a Jiralhanae Captain.
File:UNSC_screens.jpg|Screens showing force deployments late in the battle.
File:Halo-3-The-Storm-15-AV-14-VTOL-HORNET.jpg|Hornet and Banshee aircraft battling in the skies above Voi.
File:Mac.jpg|[[UNSC frigate]]s fire their MACs on the [[Forerunner Dreadnought]].
File:Voi assault 4.png|The Portal begins to activate after the UNSC's failed assault on the Dreadnought.
File:Halo3 E3 TRAILER 2007 720p30 ST 6300Kbps 002 0001.jpg|The Fleet of Retribution ships glass Voi and its surroundings to contain the Flood threat.
File:Final meeting 7.png|UNSC and Sangheili leaders hold their meeting aboard the ''[[Shadow of Intent]]''.
File:Cleveland in 2552.PNG|Covenant forces invade Cleveland.
</gallery>
</gallery>
==List of appearances==
{{Col-begin}}
{{Col-2}}
*''[[Halo: First Strike]]''
**''[[Halo: First Strike#2010 bonus content|Adjunct]]''
*''[[Halo 2]]'' {{1st}}
*''[[Halo Graphic Novel]]''
**''[[Second Sunrise Over New Mombasa]]''
*''[[Halo: Ghosts of Onyx]]''
*''[[Halo: Landfall]]''
**''[[Halo: Combat]]''
**''[[Halo: Last One Standing]]''
*''[[Halo: Uprising]]''
*''[[Halo 3]]''
*''[[Halo 3: ODST]]''
**''[[Sadie's Story]]''
*''[[Halo Legends]]''
**''[[Origins]]''
{{Col-2}}
*''[[Halo: Evolutions - Essential Tales of the Halo Universe]]''
**''[[Palace Hotel]]''
*''[[Halo: Glasslands]]'' {{Mo}}
*''[[Halo 4]]'' {{Mo}}
*''[[Halo 2: Anniversary]]''
*''[[Halo: New Blood]]''
*''[[Hunt the Truth]]'' {{Mo}}
*''[[Halo: Spartan Strike]]''
*''[[Halo Mythos]]''
*''[[Halo: Envoy]]'' {{Mo}}
*''[[Halo: Legacy of Onyx]]'' {{Mo}}
*''[[Halo: Official Spartan Field Manual]]''
*''[[Halo Infinite: Memory Agent]]'' {{Mo}}
*''[[Halo Infinite]]''
*''[[Halo: Outcasts]]'' {{Mo}}
{{Col-end}}
==Notes==
{{Ref/Notes}}


==Sources==
==Sources==
<references/>
{{Ref/Sources|2}}
 
{{Human-Covenant War}}
{{Human-Covenant War}}
[[Category:UNSC]]
{{DEFAULTSORT:Earth}}
[[Category:Human-Covenant War]]
[[Category:Engagements in the Battle for Earth| ]]
[[Category:The Covenant]]
[[Category:UNSC victories|Earth]]
[[Category:Battle]]
[[Category:Battles of the Human-Covenant War|Earth]]
[[Category:Pages with Quotes]]

Latest revision as of 09:16, August 8, 2024

This article is about the major battle at the end of the Human-Covenant War. For smaller conflicts during the post-war era, see Battle of Earth (disambiguation).

Previous:

Concurrent:

Next:

Battle for Earth
A multimedia collage of the Battle for Earth. Images used starting from top left going clockwise: File:H2A - BattleofEarth.png, File:Orphic Spear 1.png, File:Time to Believe.jpg, File:Cleveland in 2552.PNG (edited to remove text), File:Battle of Sector Six 09.png, File:Voi 7.jpg.
Clockwise from top left: The Fleet of Sacred Consecration above the European Union; Alpha-Five dropping into Mombasa; John-117 supposedly at the Second Battle of New Mombasa; a Ket-pattern battlecruiser over Cleveland; a Phantom reinforcing the Covenant in Sector Six; John-117 and Thel 'Vadam watch as Indulgence of Conviction crash lands into Voi.

Conflict:

Date:

October 20, 2552[1][2] – c. December 3, 2552[Note 1][2]

Location:

Earth, Sol system

Outcome:

UEG/Fleet of Retribution victory

  • Covenant invasion successfully repelled; most surviving forces flee to Installation 00
  • Earth brutally bombarded[3] but full glassing averted; parts of Africa are, including in the excavation of the Portal at Voi
  • Catastrophic reduction of Earth's population[4] and majority of cities destroyed[5]
  • Local Flood infestation contained[6]
Details
Belligerents

Post-Great Schism:

  • Flood (briefly on November 17)
Commanders

Post-Great Schism:

Pre-Mombasa:

Post-Mombasa:

Gravemind

Strength

See here for details on participating forces


Post-Great Schism:

See here for details on participating forces

Casualties

Extreme[3]

Very heavy

  • Massive terrestrial and exoatmospheric losses[16]
    • Majority of the Fleet of Sacred Consecration

Completely sterilized

Civilian casualties

Civilian losses in the billions[17]

 
Battle for Earth

This article is part of a series on the
Battle for Earth



To check out information for other Human-Covenant War battles, see here!
vde

"We ran from them. They followed. We thought they'd never find us... we were wrong."
Cortana[18]

The Battle for Earth,[19][12] also referred to as the Earth Sustained Defense Campaign,[2] was one of the largest, bloodiest and latest engagements fought between the Covenant and the forces of the Unified Earth Government (primarily those of the United Nations Space Command), at the end of the approximately twenty-seven year-long[Note 2] Human-Covenant War, which took place on and above the planet Earth from October 20 to at least December 3, 2552.[Note 1] It was one of the most important battles of the war, as the fate of humanity depended on the survival of its homeworld and seat of its government.[Note 3]

Though the invasion took place on a global scale, the most significant conflicts occurred in the East African Protectorate in the form of three battles fought within and between the cities of Mombasa and Voi, collectively referred to as the first, second, and third battles of Mombasa.[20] The conflict began when the Fleet of Sacred Consecration, under the command of the Prophet of Regret, arrived on October 20 with intentions of traveling through the portal that a luminary in its possession pointed to. This move was made without the consent of the other two Hierarchs and in ignorance regarding the status of this planet as humanity's homeworld. Faced with the full might of the UNSC Home Fleet, it was not long before Regret's flagship fled to Installation 05. Soon after this, the Prophet of Truth initiated his plans to replace Sangheili with Jiralhanae and assume control over the entirety of the hierarchal triumvirate. The Jiralhanae occupation forces left behind by Regret assumed control of all remaining local Covenant forces on and over New Mombasa by secretly killing all abandoned Sangheili in the city to secure Truth's later arrival following the beginning of the Great Schism. Later on the next day, a large Jiralhanae support and excavation fleet sent by Truth was then dispatched to Mombasa and begin to glass most of Kenya, alongside the remnants of Regret's fleet while additional Covenant reinforcements continued to appear in the system and began a resurgent and larger assault on the planet.[21][13][2]

At this point, the fight for Earth began in earnest. Smaller battles were waged all across the world, from the UEG capital of Sydney, Australia, to Cleveland, URNA, to Havana, Cuba, and to Mount Erebus, Antarctica and multiple other locations even when the Sangheili and now Jiralhanae-led Covenant forces turned on each other following the beginning of the Great Schism.[22][5][9][2] By November 17 after very hard fighting, most of the Home Fleet had been obliterated by substantial Covenant naval forces loyal to the Prophets, including the Prophet of Truth,[15] and the majority of cities were destroyed as well throughout the battle.[23] After defenders and the orbital defense grid were overwhelmed, the Earth had been massively devastated by a large Covenant bombardment, resulting in catastrophic human casualties.[3] It was on this date that the Prophet of Truth himself, aboard the Forerunner Dreadnought and with Spartan-117 in tow, arrived and headed straight for the Excession, by then fully excavated. Upon interfacing with the keyship, the portal was activated and a large contingent of the remaining Covenant fleet under the Prophet's command departed through the Portal with the intention of activating the Halo Array from the Ark.[24]

Almost immediately after this, the Flood arrived aboard a captured Ket-pattern battlecruiser, which crashed down in the town of Voi. A battle group assigned to the Fleet of Retribution, a Covenant separatist fleet allied with the UNSC against Truth and his loyalists, was permitted to glass a large portion of Kenya to prevent the parasite's spread. With the threat from the Flood dealt with and the bulk of Covenant forces gone, several UNSC forces accompanied the Fleet of Retribution in pursuit of Truth.[6] The remainder of UNSC forces remained behind to defend Earth from an expected full-scale Flood invasion and also began a major counteroffensive to eliminate all Covenant that remained.[6][2]

Official accounts report that, faced with the potential of human extinction at the hands of an alien hegemony, a significant number of civilians joined the UNSC forces to repel the Covenant throughout the campaign on Earth with many becoming an instrumental part of the war effort.[12][5]

Background

The Human-Covenant War was a decades-long conflict wherein the Covenant hegemony was determined to exterminate all of humanity at the behest of its three Hierarchs, who falsely considered humans as representing the living embodiment, and thus discreditation, of their religion's gods at the time of their discovery. Also a goal of the empire, from long before first contact with humanity, was the location and activation of the Halo rings.

Preparations

In 2550, preparing for a possible battle at Earth, the UNSC reactivated the museum ship UNSC Crassus.[25]

In the aftermath of the Fall of Reach, the UNSC began to pull the majority of its forces back to Earth, with most units assigned to defend Earth's six tether cities.[26]

Formation of the Home Fleet

From May 14–19, 2552, UNSC forces in the Earth Defense Coordination Zone were placed at maximum readiness levels and all warships with magnetic accelerator cannons self-deployed or towed to rally points. Cairo Station was established as flag headquarters. Following September 5, 2552, all remaining naval forces were consolidated into a single command grouping: the UNSC Home Fleet. Fleet Admiral Joseph Harper was appointed senior flag officer and given primary administrative and tasking authority over all assets in the Sol system under emergency directives authorized by UNSC High Command and approved by the UEG Security Council. Remaining expeditionary and defense fleets retained administrative control over their battle groups, though all type commands were dissolved.[2]

Earth compromised

Erde-Tyrene, as represented by the luminary discovered on Meridian.
Main article: Operation: FIRST STRIKE

The Prophet of Truth discovered the location of Earth after the Fall of Reach, but withheld knowledge of this discovery from the rest of the Covenant leadership.[13] To attack the human homeworld, he ordered an assault fleet to secretly assemble at Unyielding Hierophant station in the Tau Ceti system. The fleet would overwhelm Earth's defenses in a single decisive strike.[13][27] The fleet was discovered by the UNSC AI Cortana and a preemptive strike was led by Vice Admiral Danforth Whitcomb and a SPARTAN-II, strike team, which successfully destroyed Unyielding Hierophant and almost the entirety of the assembled fleet, some five hundred ships.[13][28] Earth was granted a small reprieve.

The Prophet of Regret also independently learned of the location of Earth that was known as Erde-Tyrene as the location of a Forerunner artifact, the Portal leading to the Ark. This revelation came after long study by stewards of a Forerunner luminary taken from the moon, Meridian, in 2551. Not being privy to Truth's information, Regret set off to uncover the artifact without any knowledge that Erde-Tyrenne was the humans' homeworld. Regret unknowingly led his small fleet, a mere two assault carriers and thirteen battlecruisers, straight into Earth's formidable defenses.[13] Truth belatedly learned of Regret's expedition to Earth, and dispatched a large Jiralhanae-led support and excavation fleet to reinforce the remaining forces of the initial fleet. They arrived almost one day after Regret had fled.[13][21]

Battle

Arrival of Regret's fleet

"Something's not right. The fleet that destroyed Reach was fifty times this size!"
Fleet Admiral Terrence Hood[10]

The High Prophet of Regret's fleet was detected near Jupiter's moon Io, as a series of slipspace "whispers". Probes were sent to investigate, but shortly afterwards the Covenant fleet exited slipspace near Earth, just outside the killzone of the planet's orbital defense platforms. UNSC forces went to TACCON Alpha 2. Fleet Admiral Harper ordered his battle group of the Fifth Fleet to attack, but quickly received new orders from Fleet Admiral Terrence Hood to fall back and defend the ODPs. Having expected an overwhelming enemy offensive in the style of the Battle of Reach, the relative weakness of the attack puzzled the defenders.[10]

Orbital Defense

Fleet Admiral Harper: "First Echelon, you're with me, blanket those cruisers, take ‘em out one by one. Second Echelon, keep those carriers busy."
Cortana: "Registering all hostile vessels inside the kill zone. Thirteen cruisers, two assault carriers. I'm going loud!"
Fleet Admiral Harper and Cortana as the space battle between opposing fleets rages.[10]
The battle in space takes place despite Regret's fleet being outnumbered by the UNSC Home Fleet.

The assault carriers converged on the battle cluster including Athens Station, Cairo Station and Malta Station.[10] The ODPs opened fire as the enemy entered range. Covenant troops boarded the stations, intending to demolish them with a Chershi-pattern antimatter charge each. As each bomb was planted the Covenant withdrew. Athens and Malta were demolished in quick succession. Cortana, aboard Cairo, deduced the nature of the threat and John-117 was dispatched to prevent the same fate from befalling Cairo.[10]

Cortana directed the SPARTAN-II to the bomb's location in Cairo's fire control center. En route to the bomb, John-117 rescued Commander Miranda Keyes and allowed her to board UNSC In Amber Clad. The frigate departed Cairo to join the fray.[10]

Meanwhile, Harper's Fifth Fleet continued to engage the Covenant task force in Earth orbit, sustaining huge losses in the wake of the Covenant's superior firepower but still prevailing through sheer numbers against the unusually small Covenant force. However, even as their escorts were effectively routed by the UNSC, the two assault carriers pushed onward, bypassing much of the already battered human fleet even as they too came under fire.[10]

The two assault carriers began to break through toward Cairo. Cortana directed Cairo's MAC against the Solemn Penance, but the ship did not stop to engage and instead made directly for New Mombasa on the surface. Admiral Harper led the attack on the second carrier and depleted its shields. Keyes volunteered to attack the carrier immediately, but Hood was unwilling to pit a single frigate against so large a target.[10]

The solution to the second carrier came from an unexpected angle. John-117 and Cortana managed to defuse and capture the Covenant antimatter bomb aboard Cairo, and the Spartan volunteered to go EVA and personally plant the bomb on the last carrier. With Lord Hood's approval, John-117 leapt out of an airlock with the bomb using only the initial explosive decompression for impulse. Longsword interceptors opened a breach in the carrier's hull and allowed the Spartan to infiltrate and plant the bomb internally. The detonation destroyed the ship. John-117 escaped using the same means he had arrived and free fell to the UNSC In Amber Clad.[10]

Earthside

"Dear humanity, we regret being alien bastards, we regret coming to Earth, and we most definitely regret the Corps just blew up our raggedy-ass fleet!"
— Avery Johnson commenting on Regret's message.[29]
Main article: Battle of Mombasa
Concept art for the campaign level Metropolis in Halo 2: Anniversary.
A Scarab attacks the city at the start of the invasion on New Mombasa.

Regret's carrier came to arrive over New Mombasa in the East African Protectorate via slipspace and deployed troops into the city and the surrounding area in an attempt to clear and secure it.[30][31][29] While the Mombasa Tether had been shut down, the city's population were trying to leave the city.[32][31] While the UNSC, militias and armed citizens was fighting against the Covenant forces, UNSC high command wished to discover why the Covenant were landing only in Mombasa, and John-117 was ordered to capture Regret for interrogation. The Spartan deployed with marines and ODST in a trio of Pelicans from the UNSC In Amber Clad near the city. The dropships were shot down by a Covenant Scarab in Old Mombasa.[29] John-117 and the survivors regrouped and pursued the walker to NM 105E, and across the bridge to New Mombasa Sector B. At the time, the Alpha-Five was tasked to recover the Conduit that was brought by the Covenant on the city while another ODST squad were ordered to retrieve information the Covenant were interested in.[33] The Scarab was eventually trapped and destroyed by John-117 at the end of a canal. Covenant forces started to withdraw to the carrier for slipspace departure to the Halo Installation 05.[34]

In orbit the Home Fleet began deploying ODSTs to Mombasa in SOEIVs, intending to board the carrier and capture the Prophet of Regret. One Squad, Alpha-Nine, deploying from the UNSC Say My Name and led by Gunnery Sergeant Edward Buck, was diverted by ONI to secure the city's infrastructure AI.[35]

Regret's means of escape took the UNSC by surprise. The carrier initiated a slipspace jump while still over the city. By this time, Lord Hood originally attempted to intercept the Covenant carrier by dispatching two Marathon-class heavy cruisers at New Mombasa.[34] The UNSC In Amber Clad quickly recovered John-117 and the light frigate along with UNSC Paris, UNSC Redoutable, UNSC Coral Sea were fast enough to follow the carrier into slipspace while UNSC Dusk only followed in the fleeing ship's wake.[36] The slipspace rupture severely damaged the city[34] and generated an EMP. Many ODSTs had not yet landed when the carrier escaped and were caught in the EMP and blast. Drop pods were disabled in flight and plunged into uncontrolled freefall. Those who survived the blast were scattered across the city.[35]

Around this time, Covenant forces also attacked Cairo, Egypt[22] and Berkeley, URNA. At Berkeley, a Covenant starship, possibly a Ket-pattern battlecruiser from the Fleet of Sacred Consecration, began deploying its Seraph fighters on the city.[37][Note 4]

Covenant reinforcements

Fall of Mombasa

Veronica Dare: "When did this happen?"
Edward Buck: "They started showing up right before I went underground."
Captain Veronica Dare and Gunnery Sergeant Edward Buck viewing a second and larger fleet of Covenant starships circling Mombasa.[38]
After fully securing the East Africa, the Jiralhanae excavation fleet begin to uncover the Portal at New Mombasa.

Immediately following the slipspace event, Jiralhanae forces loyal to the High Prophet of Truth, who had embedded said troops into his political rival Regret's fleet,[19] enacted their leader's orders. The Jiralhanae violently displaced their Sangheili commanders left in the initial fleet both ground-side,[39] and in orbit, and then seized the full control of Covenant forces at Mombasa in order to secure Truth's arrival on the Portal by his loyalists,[1] the beginning of Truth's plan to place the Jiralhanae as the Covenant's primary warrior race.[13] While High Charity and the rest of its fleet were following the Solemn Penance on their way to the newly discovered Halo Installation 05, the murder of Regret's Sangheili forces remained secret from the rest of the Covenant.

Surviving UNSC forces in the city, aided by the New Mombasa Police Department, continued to resist, but were eventually overwhelmed. The next day on October 21, a Jiralhanae-led support fleet sent by Truth arrived at the African continent, joining the remains of Regret's fleet as the combined fleet began glassing Mombasa and the surrounding area together, uncovering the Portal to the Ark.[21][13] Captain Dare and her ODST squad managed to secure the city's infrastructure AI and escape before the city fell to the enemy.[38] These forces of the new fleet was both archaeological and military.[40] While a handful of ships of the second fleet engaged Earth's forces, the majority of the fleet was preoccupied for the excavation of the massive slipspace portal.[41]

Covenant occupation

"So then the Covenant fleet really starts to tear into the orbital defenses. It's getting ugly up there. Major skirmishes with the Second, Seventh, and Sixteenth Fleets."
Sergeant Laura "Smokes" Tanner[9]
UNSC and Covenant forces fight each other for supremacy of Earth.

The battle spread all over the globe in the following days and weeks with more and more Covenant fleets of multitude of warships continuing to arrive and attacked targeting cities and areas globally after the full compromise of Earth,[23][9][2] led by Jiralhanae and Sangheili commanders.[5][7] At the same time as these events, other colonies and parts of the Sol system such as Luna and Mars came under assault by the Covenant.[2]

While maintaining a significant presence in orbit, the Covenant ships deployed ground forces to multiple targets around the globe.[9] However, due to many Covenant forces, notably those under the command of the Prophet of Truth and his Jiralhanae loyalists, that were concentrating their forces at Kenya for the excavation of the Portal at Voi, some of their forces were sometimes disorganized, hence less effectual.[2] A Second Battle of New Mombasa between the UNSC and Jiralhanae-led Covenant ground forces takes place shortly after the first battle over seven days[42] before the end of October.[43] The Spartan Blue Team, consisting of Frederic-104, Linda-058, and William-043, were constantly engaged for the first two weeks. They repelled enemy ships in orbit in numerous zero-gee operations whilst on the surface they neutralized Covenant excavations, first on Ross Island in Antarctica,[9] and then underwater off the Yucatan Peninsula.

London in the 26th century.
London, one of many major cities to fall under Covenant occupation.

Sydney, Australia was one of the cities invaded by the Covenant during the engagement due to its importance in UNSC's war effort. Though the city suffered heavy damage by Covenant bombardment, the UNSC's HIGHCOM Facility Bravo-6 remained undamaged.[44] Diego Garcia, following its effective attacks against the initial Covenant forces during the Battle of Mombasa, was attacked by a Covenant capital ship to destroy the base around November, but the base managed to survive the attack.[22][45] Aranuka, a vast city-platform built, was aggressively invaded by the Covenant, killing thousands of Aranukan inslanders, and much of the city was destroyed in their research for a supposed hidden Forerunner artifact. Despite heavy casualties, the UNSC was able to drift the alien invaders away and the Aranuka Space Tether survived the siege of the city.[46]

Elsewhere, Jiralhanae forces landed in London, Britain and soon established an occupation of the city. UNSC forces were deployed into the city to evacuate civilians, including future SPARTAN-IV commander Laurette Agryna.[47][48]

On November 3, the Great Schism finally erupted among the Covenant with all now-casted out Sangheili and Covenant forces, now led by the Jiralhanae as the new dominant military backbone of the hegemony, turning and fighting each other which resulted many Sangheili being allied with the UNSC following the death of the Chieftain of the Jiralhanae Tartarus during the Battle of Installation 05.[15] During that time, the Spartan Blue Team were deployed to Havana, Cuba, where they stole the enemy Jiralhanae destroyer Bloodied Spirit, and destroyed another destroyer and the Centennial Orbital Elevator. They subsequently redeployed aboard the stolen ship to the Forerunner shield world Onyx to aid Dr. Catherine Halsey, the creator of the SPARTAN-II program.[49] During the same day, 3 UNSC expeditionary fleets of the Home Fleet: the Second, Seventh, and Sixteenth Fleets were contesting Earth orbit against numerous Covenant vessels during major orbital skirmishes as the fighting in orbit is scattering the orbital defense,[9] but the Covenant continued to raid the surface in search of Forerunner artifacts, with many under the Prophet of Truth's command mostly concentrating in East Africa.[41]

On November 10, Covenant forces began to excavate and occupy built-up positions centered around Free-fire Area OZONE in Arizona, URNA.[2] As of mid-November, the majority of cities were destroyed over the course of the Battle for Earth,[23] and the population of Earth was already reduced to 5 billion earlier this month.[50]

Truth arrives

Fleet Admiral Terrence Hood: "Master Chief, you mind telling me what you're doing on that ship?"
Master Chief: "Sir, finishing this fight."
— Admiral Terrence Hood and John-117, as the Keyship arrived at Earth.
John-117 attempting to assassinate the Prophet of Truth before the Prophet's death being foiled by a Kig-Yar Sniper.

Near the conclusion of the Battle of Installation 05, the Prophet of Truth departed High Charity, near Halo Installation 05, in the Forerunner keyship Anodyne Spirit on November 3, arriving at the Sol system on the November 8 and proceeding on course towards Earth at near-relativistic speeds.[1] The prophet sought to activate the Ark, fire the Halo Array, and begin what he thought would be the "Great Journey". After the loss of High Charity to the Flood, the Covenant reorganized to make a final push offensive on Earth,[15] as the Prophet of Truth took many remaining Covenant fleets at his disposal following his departure.[51] However, upon his arrival, the Prophet quickly learned that John-117 had stowed away aboard the ship and its crew then became preoccupied with finding and eliminating the Spartan.[52]

By this time, the Prophet of Truth led the largest Covenant invasion force recorded by the UNSC at that point in the war to Earth: a very massive Covenant combined armada, presumably both larger than the one used during the Fall of Reach and containing at least over three hundreds ships – including the remaining loyalist starships and fleets of the High Charity defense fleet – as the final contingent of his forces.[14][53][53][51] The fleet would later breach the Lunar perimeter,[3] and then engage the UNSC Home Fleet, which was already weakened by the previous invasion fleets over Earth, at some point prior to the Forerunner Dreadnought's arrival on Earth as the November 17 dawned.[15]

Whilst on Installation 05, Commander Miranda Keyes, Sergeant Major Avery Johnson, and Arbiter Thel 'Vadam learned of the Prophet of Truth's intentions and departed the installation after the Anodyne Spirit while Rtas 'Vadum and most of Sangheili vessels under his command, comprising hundreds of ships, stayed behind on Installation 05 in order to quarantine and glass the Halo ring as well as quarantine High Charity in order to stop the escape of the Flood and the Gravemind from both the Halo and the city. Upon arrival at Earth on or just before November 15 aboard one of the Sangheili vessels,[2][52] they took up station in an old military base, Crow's Nest, near Voi, and waited for John-117 to arrive.[3][Note 5] On November 15, Sergeant Major Johnson and the ONI interrogated Quick to Adjust, a rebel Huragok since the Regret's attack on New Mombasa, to share information he had and relating to the Portal at Voi.[2][38]

Turning the tide

Main articles: Scramble onboard Forerunner Dreadnought, Battle of Cleveland

Colonel James Ackerson: "See, that's why you're going to lose. All your pomp and thinking you're right about everything... when it comes down to it you're just dumb and arrogant and--"
Shipmaster Lepidus: "That's why we'll win."
Colonel James Ackerson's last words before his demise at the hands of Lepidus, and Lepidus after executing James.[16]
The Forerunner Dreadnought ferrying Truth jumps into Earth high orbit, where the final space battle continues to rage between opposing fleets over the planet.

At some point between November 15 and 16,[Note 6] while John-117 was still hunting the Prophet of Truth, the UNSC already lost their garrison on Mars at the hands of the Fleet of Furious Redemption following the Battle of Mare Erythraeum,[5] which led to a dramatic increase in Covenant force deployments on Earth as the Covenant began to concentrate more of their forces on the planet, worsening the siege.[23] Despite the dramatic increase in Covenant deployments, the works of Colonel James Ackerson in the Battle of Mare Erythraeum helped buy UNSC ground forces on Earth precious time.[54] By this point, the UNSC would be hardly faced with impossible odds with no hope in sight against the full might of Covenant forces on Earth.[16]

Shortly after the loss of Mars, Covenant forces also invaded the city of Cleveland on Earth without intending to destroy it or kill civilians, unlike other cities, looking for a supposed Forerunner artifact known as the "Key of Osanalan" as told by a wounded and Covenant-tortured Colonel James Ackerson, who was captured aboard Lepidus's vessel, the Triumphant Declaration, and that was a necessary component for the firing sequence of the Halo Array. Additionally, his plan would help the population to escape the city and stall the Covenant assault on Earth and prevent the planet's fall to the Covenant like Reach.[5] During the battle, many civilians were captured and interrogated at Jacobs Field in Old Cleveland for the Key of Osanalan,[5] but later evacuated following a surprise attack from a ODST team that suddenly killed most of the Covenant forces.[55]

Arriving in a large chamber aboard the keyship Anodyne Spirit with the Prophet of Truth and a pack of Jiralhanae soldiers and honor guardmens being present, John-117 attempted to kill the Prophet remotely via a Vostu-pattern carbine, as soon as the Spartan was then attacked by a Kig-Yar Sniper and the Prophet escaped, forcing John-117 to confront and engage a number of Jiralhanae warriors. While the Spartan was believed to be dead, the Prophet of Truth orders the crew of the Forerunner Dreadnought to jump further in-system and finally arrived at Earth in high orbit on November 17, spearheading the final contingent of Truth's forces as the final space battle is still raging and the ship was then surrounded by the massive space engagement.[15][16] During which, John-117, emerged once again, broadcast to the UNSC, confirming his presence and his information regarding his situation.[16]

At the outcome of space engagements, almost the entire UNSC Home Fleet, hence many entire smaller fleets, had been utterly overrun by the outnumbering and outgunning Covenant naval forces, though it was likely that most of the overwhelming Covenant fleet, mostly the capital ships, was in return destroyed by the UNSC defenders, mainly due to Earth's formidable and fierce defense and Hood's brilliant leadership, especially thanks to multiple defending "Super" MAC-equipped orbital defense platforms,[8] throughout the Battle for Earth.[3] After demolishing most of Earth defenses, the recently-victorious Covenant fleet then lead a colossal bombardment on Earth, causing extreme terrestrial casualties and damaging much of the surface of the planet.[3] The Cairo Station survived the final space battle relatively intact, albeit left damaged.[15]

Concept art of John-117's descent to Earth at the start of Halo 3.
John-117 and the Dreadnought entering Earth's atmosphere before crashing on East Africa.

James' civilian brother, Ruwan Ackerson who was aware of what the Covenant are looking for during the Covenant interrogation at Cleveland, along with Myras Tyla, were both brought to a secret UNSC forces to meet Sergeant Twyker in attempt to repel the Covenant forces in Cleveland.[5][55] Ruwan was injected with Tykos 30, an organic tracking device, as Tyla and the remaining civilians were evacuated. He was then taken to Chagrin Falls, where a Jiralhanae Chieftain demanded that Ackerson relinquish the Key of Osanalan and an army of Jiralhanae surrounded him. However, Ruwan told them he was the Key, which confused the Covenant and brought him aboard an orbiting Ket-pattern battlecruiser, the Harbinger of Piety, before the Minister of Inquisition. There, the Minister vows to spare Earth from the Covenant occupation in exchange for knowledge of the apparent "key". Aboard the Forerunner Dreadnought, John-117, unable to assassinate the Prophet of Truth and take control of the Forerunner Dreadnought's trajectory, was informed that the Harbinger of Piety that was holding the "key" is to be destroyed. Since the ship was near the keyship, the Spartan was ordered by Twyker to find a way off the Forerunner Dreadnought to avoid being caught in the impending destruction of the cruiser. The Master Chief was then ordered to find a way to return to Earth quickly as the Forerunner Dreadnought began to enter Earth's atmosphere.[16] While the Minister was still interrogating Ruwan, the Nassau Station proceeded to remotely shoot at the Harbinger of Piety with a single shot from its MAC gun, destroying instantly the cruiser and killing everyone aboard, including the Minister of Inquisition and Ruwan Ackerson. Though, Twyker's worries was proven ill-founded due to Forerunner Dreadnought remaining unharmed following the Harbinger of Piety's destruction.[16]

After that a furious Lepidus was aware of the loss of Harbinger of Piety and the Key of Osalanan was in fact turned out to be a hoax perpetrated by Colonel James Ackerson while openly mocking the Covenant for their arrogance, the Jiralhanae shipmaster decapitated the colonel aboard the Triumphant Declaration over Mars. Ultimately, the attack on Cleveland was repelled due to James's act of self-sacrifice, and that of Ruwan.[16] Though the Martian valiant defense forces were crushed during the Battle of Mars, they are credited for delaying Covenant forces from pressing their siege on Earth.[56] Shortly after the Covenant worldwide bombardment, the Earth human population was swiftly reduced to only 200 million individuals, initially around 10 billion prior the Covenant assault with heavy casualties and a major evacuation effort and the sudden change after Truth's arrival.[4][50][57] The refugees of Cleveland, including Tyla, were evacuated to a relief camp in Akron.[16]

Immediately after the Type-27 Mantis deployments has been cleaned, the UNSC frigates initiates an attack on the Forerunner Dreadnought.

Battle for the Portal

Main article: Battle of Kenya

"Marines, the Prophet of Truth doesn't know it yet, but he's about to get kicked right off his throne. You will take our city back. And drive our enemy into the grave they've been so happily digging. One final effort is all that remains."
Fleet Admiral Terrence Hood

As the Dreadnought entered Earth's atmosphere, John-117 left the ship by leaping off during re-entry and crashing into the East-African jungle.[58] By this time most of Truth's remaining forces arrived to the now-uncovered Ark portal at Voi and had set up heavy AA batteries and other defenses near Voi and in the surrounding area to protect their work at the Portal.[3][2] During Spartan-117's re-entry, a pair of ODSTs used a laser designator during an operation in Sector Six (near the Pakistan-Afghanistan border) to track the Spartan's fall.[11] The data made it easier for Sergeant Johnson and Thel 'Vadam to locate the Spartan. After making their way through the jungle, they were extracted by a dropship, despite Covenant resistance, and taken to Crow's Nest.[58] The Covenant tracked them back to the base, however, and launched an attack.[3]

Commander Keyes proposed to destroy the Covenant anti-air defenses at Voi, allowing low flying frigates to strike the Forerunner Dreadnought now landed on the Portal. Fleet Admiral Terrence Hood had only a few frigates left, but was willing to commit to the risky plan with John-117's recovery.[3]

Just before the UNSC offensive began, the Prophet of Truth hijacked Crow's Nest operations center monitors, broadcasting a message to the base, promising the reduction of Earth to glass by the Covenant, and then the Covenant attacked Crow's Nest. Miranda Keyes evacuated and destroyed the base with a bomb before it could be occupied. John-117 barely managed to escape the destruction of the facility but met up with Gunnery Sergeant Reynolds and set out in Warthogs on Tsavo Highway to head for Voi, as did scattered UNSC forces, engaging Covenant heavy vehicles along the way.[3][59]

At Voi, the UNSC broke through Covenant defenses, as John-117 and Thel 'Vadam disabled the last Covenant AA battery. With the path to the Portal cleared, Fleet Admiral Hood ordered at least seven frigates and multiple Longswords to attack the Forerunner Dreadnought. Despite MAC fire, the enemy ship remained intact and was able to activate the Portal. The Dreadnought and the surrounding Covenant ships departed Earth through the resulting Slipspace portal.[24] Covenant battlenet cohesion broke following Truth's departure, allowing UNSC forces in the southwest URNA to begin a major counteroffensive as part of their ongoing campaign.[2]

Master Chief and the Arbiter witness the arrival of a battlecruiser, but infested by the Flood.

Flood on Earth

Main article: Outbreak on Earth

"Quickly! Let us find their ship. Make short work of this abomination!"
— Thel 'Vadam

While the battle for Earth raged, the Fleet of Retribution had been attempting to maintain a quarantine of the Flood-infested High Charity and Installation 05. The Flood-controlled Indulgence of Conviction escaped and arrived at Earth as the Prophet of Truth departed through the Portal. The ship crashed in Voi and began infesting the area. John-117 and Thel 'Vadam quickly made for the crash site intending to overload the ship's reactor. The explosion would destroy the city but would hopefully stop the spreading infestation as well.[6]

Concept art of ODSTs preparing to fight the Flood in Voi, in the mission Floodgate.
To prevent the sudden loss of Earth to the alien infestation, UNSC forces engage the Flood before being reinforced by the Sangheili forces.

A battle group of Sangheili ships, led by Fleet Master Rtas 'Vadum aboard the assault carrier Shadow of Intent, arrived in pursuit of the Flood. The Sangheili believed Cortana was aboard the Flood ship; Rtas 'Vadum could give his own troops and the UNSC only a little time to recover the AI before Voi and the surrounding area were cleansed by glassing. John-117 found the small storage device containing the AI; he entrusted to 343 Guilty Spark for repairs and they were extracted by Phantom to Shadow of Intent.[6]

Thel 'Vadam convinced Rtas 'Vadum to exercise restraint when glassing. Thus, only an area of Africa was glassed instead of a much wider area.[6]

Shortly after the initial skirmishes with the Flood, the Flood-infested High Charity jumped out of slipspace further out in the Sol system. Shortly after discovering the presence of the Portal at Voi, the Gravemind conducted an arcane bridging maneuver allowing it to transport the former holy city to the Ark from the vicinity of Mars rather than physically accessing the portal on Earth; the human homeworld thus escaped further Flood contamination.[60]

The Fleet of Retribution's battle group and the UNSC Battle Group Victory depart from Earth through the Portal at Voi as the Fleet Admiral Terrence Hood remains on the planet from an expected full-scale Flood invasion.
The Fleet of Retribution leaves through the Portal while Fleet Admiral Hood stays on Earth via Pelican.

Dealing with the Flood

Terrence Hood: "And you, Shipmaster, just glassed half a continent! Maybe the Flood isn't all I should be worried about."
Rtas 'Vadum: "One single Flood spore can destroy a species. Were it not for the Arbiter's counsel, I would have glassed your entire planet!"
— Admiral Terrence Hood and Rtas 'Vadum, after the Flood infection of Voi.

Admiral Hood and Commander Keyes joined John-117, Thel 'Vadam, and Rtas 'Vadum aboard Shadow of Intent where 343 Guilty Spark repaired Cortana's damaged storage device. The device contained only a message from the AI; it warned them that the Flood-infested High Charity was en route to Earth, but that beyond the Portal there was a solution to the Flood without firing the Halo Array.[6]

Admiral Hood was determined to make his stand against the Flood on Earth. The Sangheili believed this to be foolish; there was little hope Earth could withstand a Flood spore, never mind a full Flood invasion, and they decided to place faith in Cortana and journey beyond the Portal. John-117 and Keyes convinced a weary Hood to allow them, and a UNSC task force to accompany the Sangheili.[6]

The final stand Hood expected never came; the next day, High Charity and the Flood arrived in the Sol system, but instead performed a Slipspace jump from Mars orbit to Installation 00, an action that spared Earth from a second contamination.[61] It was at the massive installation that the Flood and the remnants of the Covenant were ultimately defeated by the UNSC and Sangheili three weeks later, bringing an end to the war that nearly extinguished the human race.

Covenant remnants

Main article: URNA Southwest Campaign

On November 18, Jiralhanae forces spotted the UNSC Crassus and its escorts at sea and engaged it using a mixture of dropships and war-sleds. While initially successful, the boarding stalled due to the ship's hallways being smaller than their bodies. Lacking any progress, the Jiralhanae destroyed the flight tower and left, leaving the carrier afloat.[25]

With the majority of Truth's forces now bound for the Ark, some of the remaining Covenant forces on Earth fortified themselves in Arizona, URNA. On December 3, Admiral Harper of the Fifth Fleet initiated Operation: MARSH FLASH, which eradicated clusters of Jiralhanae leadership attempting to activate an artifact here. The UNSC was then finally able to repel or wipe out the remaining Covanant invader forces on the planet and the system, effectively bringing an end to the invasion. Despite suffering enormous military and civilian losses, the UNSC retained control of Earth.[46] Marines involved in mopping up Jiralhanae holdouts employed the "Rex" VISR system.[62]

Aftermath

"Before 2552, there was no way anything like that could happen on Earth. On one of those distant planets in the outer colonies, maybe. But an attack on Earth? Couldn't happen. Until it did. It's called glassing. Covenant warships rain plasma down on a planet until everything and everyone on the surface melts. Usually, it's complete world destruction. Earth only got a taste. The prolonged orbital bombardment destroyed East Africa, killing millions before it ended. None of us were safe anymore."
Benjamin Giraud[63]

Battle of Installation 00

Main article: Battle of Installation 00
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Rebuilding and Rebirth

The aftermath of the Battle for Earth.
Main articles: Hillside Memorial, Project Rebirth

On March 3, 2553, a special ceremony on a hill over looking the Portal at Voi was held to honor the end of the war and those who had fallen.[64]

The rebuilding of Earth's infrastructure had begun in earnest as early as January 2553 in Sydney.[65] Project Rebirth, an organized effort to rebuild also took place in Aranuka[46] and Mombasa[66] took place at some point, with works in Aranuka being done by 2558.[46]

Engagements

The battle of Earth had numerous engagements across the planet. Kenya, Cleveland, Havana, and the Southewestern URNA were battlefields. Fighting also took place at Sydney,[44] Cairo, Diego Garcia,[22] Aranuka,[46] the Yucatán Peninsula,[49] Mount Erebus,[9] and Berkeley.[37]

Luna, Earth's moon was also attacked.[67]

Timeline

Main article: Timeline of the Battle for Earth

Participants

Main article: Participants in the Battle for Earth

Due to the prominence of Earth, and what had transpired prior to the battle, Earth possessed numerous UNSC assets. They clashed with several waves of Covenant forces.

Production notes

Many fans, as well as Halopedia, used to regard the Battle of Earth as two separate battles. Namely, the "First" was believed to comprise the events of Halo 2 and the "Second" was thought to cover the events of John-117's return at the beginning of Halo 3. Later sources have established that Truth's reinforcements arrived just one day after Regret fled, indicating that the "two" battles were one and the same. However, the Halo Encyclopedia: The Definitive Guide to the Halo Universe (even the 2011 revised edition) lists them as two separate battles; this is one of several elements of the Encyclopedia that is seemingly lifted from this wiki.

Gallery

List of appearances

Notes

  1. ^ a b While no official date has been given to the end of the Battle for Earth, the currently last known engagement during the battle, the Operation: MARSH FLASH in Arizona, took place on December 3, although it's still possible that other engagements on some other countries or continents was still occuring after the URNA Southwest Campaign ended.
  2. ^ The war was definitely concluded on December 11, 2552 when the Prophet of Truth was killed. However, an official cessation of hostilities did not come until March 3, 2553.
  3. ^ While not all of humanity believes itself to be subject to the UEG, the UEG claims authority over all of humanity.
  4. ^ This is derived from numerous pieces of information from within the Axon Clips including: Chapter 12 which mentions Kamal taking a flight back to the west coast; Chapter 9 where Sophia mentions that one of the people she is talking to isn't a Berkeley police officer and Kamal having to take a packbus to Reno, Nevada as his first stop; Chapter 10 where Kamal mentions waiting for said bus outside of Oakland.
  5. ^ The Sangheili vessel carrying the Arbiter and the survivors of In Amber Clad arrived at Earth at least two days before Truth's Keyship, despite the latter leaving Delta Halo's orbit well ahead of the former. While this may appear strange given that Forerunner slipspace travel can vastly outpace that of the Covenant, the apparent discrepancy is explained by the Keyship exiting slipspace in the outer edges of the Sol system on November 8 and not landing on Earth until November 17. The reason behind this delay was that the Covenant soldiers inside the Keyship focused on killing John instead of proceeding, as they feared he would kill the Prophet of Truth.
  6. ^ Halo: Uprising indicates that John-117 and Ruwan's actions was both concurrent. While Halo 2: Anniversary and Halo 3 show that Kenya, which was aimed by the Forerunner Dreadnought, was still in night at the time that the ship jumped into Earth and then landed on the Portal at Voi in November 17 in the morning on the African continent, the Battle of Cleveland in Halo: Uprising seemingly took place on the very early morning, if not evening, on the North American continent and still ongoing even after the sunrise on the Cleveland city, which would be likely and realistic that the battle took place at least one day before November 17, although the URNA is oddly still in daylight in the comic when the Forerunner Dreadnought arrived at Earth.

Sources

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  2. ^ a b c d e f g h i j k l m n o p q r Halo Legendary Crate - Data Drop #2
  3. ^ a b c d e f g h i j k l m Halo 3, campaign level Crow's Nest
  4. ^ a b Halo 3, Bestiarum
  5. ^ a b c d e f g h i Halo: Uprising, issue 1
  6. ^ a b c d e f g h i j k l m n Halo 3, campaign level Floodgate
  7. ^ a b Halo Infinite, Targets: Thav 'Sebarim
  8. ^ a b Halo 2, campaign level The Armory
  9. ^ a b c d e f g h i j Halo: Ghosts of Onyx, page 204-205
  10. ^ a b c d e f g h i j k l Halo 2, campaign level Cairo Station
  11. ^ a b Halo: Landfall
  12. ^ a b c Halo: Official Spartan Field Manual, page 69
  13. ^ a b c d e f g h i Halo Waypoint - Ten Twenty
  14. ^ a b Twitter, #TodayInHalo, 2552 – Aboard the Forerunner dreadnought, the Prophet of Truth arrives in our solar system with the Covenant's largest invasion force in tow and heads towards Earth. #FictionFriday (Retrieved on Feb 4, 2014) [archive]
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  16. ^ a b c d e f g h i Halo: Uprising, issue 4
  17. ^ Halo: Glasslands, chapter 6
  18. ^ Halo 2 commercial
  19. ^ a b Halo: New Blood, chapter 8
  20. ^ Halo: Spartan Assault, co-op introductory cutscene
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  24. ^ a b Halo 3, campaign level The Storm
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  29. ^ a b c Halo 2, campaign level Outskirts
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  31. ^ a b Halo Graphic Novel: Second Sunrise Over New Mombasa
  32. ^ Halo 3: ODST: Sadie's Story, Circle 5, Arc 2
  33. ^ Halo: Spartan Strike
  34. ^ a b c Halo 2, campaign level Metropolis
  35. ^ a b Halo 3: ODST, campaign level Prepare To Drop
  36. ^ Halo: Ghosts of Onyx, page 186
  37. ^ a b I love bees: Axon Clips - Chapter 12 - Kamal: "Fiancée"
  38. ^ a b c Halo 3: ODST, campaign level Coastal Highway
  39. ^ Halo 3: ODST, campaign level Tayari Plaza
  40. ^ halo3.com - About Halo, Characters, Humans (Archive)
  41. ^ a b Halo Mythos, page 117
  42. ^ Xbox.com: Jake Courage (defunct, Archived)
  43. ^ Believe - Museum
  44. ^ a b Halo: Glasslands, page 26-33
  45. ^ Halo: Mortal Dictata, page 265
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  47. ^ Halo Infinite Multiplayer Season 1 Cinematic Intro
  48. ^ Axis Studios, Halo Infinite: "Focusing on the recollections of Spartan Commander Laurette Agryna, the trailer delves into her own heroic journey as a young girl caught in the crosshairs of a battle in the centre of London 2552 AD, her rescue by Spartans and her inspiration to become a Spartan herself." (Retrieved on Aug 31, 2021) [archive]
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  50. ^ a b Halo Encyclopedia: The Definitive Guide to the Halo Universe, page 282
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  63. ^ Hunt the Truth: Episode 01: A Hairline Fracture
  64. ^ Halo 3, campaign level Halo
  65. ^ Halo: Glasslands, chapter 1
  66. ^ McFarlane Toys/Halo Point Prizes, Master Chief Statue Press Release
  67. ^ Halo: New Blood, chapter 12