Editing Battle of Requiem

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{{Battle Infobox
|name=Requiem campaign 
|prev=[[Sangheili civil war]]
|image=[[File:Mantis in action.jpg|300px]]
|conflict=[[Human-Promethean war]]
|date=July 20, 2557 - February 2558
|place=[[Requiem]], [[Milky Way galaxy]]
|result='''Indecisive'''
*Requiem and its system destroyed
*Remnant fleet escapes
*Catherine Halsey now in-league with Jul 'Mdama
|side1=[[United Earth Government]]<br> 
[[Reclaimer]]-allied [[Aggressor Sentinel]]s<br>
<small>''Supported by:''</small><br>
[[Lifeworker]]s
|side2=[[Promethean]]s<br>
[[Covenant remnant]] 
|commanders1='''July 2557'''<br>
[[Andrew Del Rio|CAPT Andrew Del Rio]]<br>
[[John-117|MCPO John-117]]<br>
'''February 2558 '''<br>
[[Thomas Lasky|CAPT Thomas Lasky]]<br>
[[Sarah Palmer|CDR Sarah Palmer]]
|commanders2=[[Ur-Didact]] <br> 
[[Jul 'Mdama|Shipmaster Jul 'Mdama]]
|forces1=*One ''Infinity'' class ship
**{{UNSCShip|Infinity}}
*Ten internally docked {{Class|Charon|light frigate}}s
*300-500 [[SPARTAN-IV Program|SPARTAN-IV]]s
*[[UNSC Marine Corps|Marine Corps]] expeditionary personnel
*[[UNSC Army|Army]] expeditionary personnel
*[[UNSC Air Force|Air Force]] wings
|forces2=*[[Promethean Knight]]s
*[[Promethean Watcher]]s
*[[Promethean Crawler]]s
*Covenant fleet
**At least one {{Class|CCS|battlecruiser}}s
**Numerous {{Class|CRS|light cruiser}}s
*Thousands of Covenant infantry
**[[Sangheili]]
**[[Unggoy]]
**[[Kig-Yar]]
**[[Lekgolo]]
|casual1=*Several SPARTAN-IV
**[[Fireteam Castle]]
**[[Cara Costabile]]
**[[Fredric Zurenia]]
**[[Scott Macrae]]
*Several Marines
*Several Army forces
*Several Air Force wings
*All Aggressor Sentinels
|casual2=*Several Promethean forces
*Several Covenant forces
**Several CRS-class light cruisers
**At least two [[Lich]]es
}}
The '''Requiem campaign''' was a series of large-scale battles and small skirmishes on the [[Forerunner]] [[shield world]] [[Requiem]]. It was waged between the [[Promethean]]s and their [[Covenant remnant|Covenant]] religious followers and the intruding [[UNSC Defense Force]].<ref name="Dawn">'''Halo 4''', campaign level ''[[Dawn (level)|Dawn]]''</ref><ref name="Infinity">'''Halo 4''', campaign level ''[[Infinity (Halo 4 level)|Infinity]]''</ref> These engagements marked the beginning of the [[Human-Promethean war]] on [[2557|July 20, 2557]]. The days following would see the conflict spread to [[Installation 03]] and the [[human]] homeworld, [[Earth]].<ref>'''Halo 4''', campaign level ''[[Midnight]]''</ref> The campaign would be resumed in [[2558|February 2558]] when the UNSCDF launched a lightning-strike expedition to the surface of Requiem.<ref>[[S1/Departure|'''Spartan Ops:''' ''S1E1 - Departure'']]</ref>

==Background==
In [[2552#December|December 2552]], the aft half of the {{UNSCship|Forward Unto Dawn}}, carrying [[SPARTAN-II Program|Spartan]] [[John-117]] and AI [[Cortana]], was transported via slipspace on a course toward Requiem after the [[Raid on Installation 04B|last battle]] of the [[Human-Covenant War]]. Cortana activated ''Forward Unto Dawn'''s [[emergency locator beacon]] while the Spartan entered cryostasis.<ref>'''Halo 3''', campaign level ''[[Halo (Halo 3 level)|Halo]]''</ref> Within the next year, [[Jul 'Mdama]] led his forces, a partly reunited offshoot of the Covenant, to Requiem in search of the shield world's "treasure": he sought the [[Didact]], the leader of the [[Warrior-Servant|Forerunner military]], due to their mutual hatred of humanity. However, 'Mdama could not find a way into Requiem, so the fleet held station in orbit.In July 2557, the ''Dawn'' entered the planet's gravity well; 'Mdama sent his forces to board the frigate to keep any humans away.<ref>'''Halo 4''', ''[[Terminal/Halo 4|Terminal "Prologue"]]''</ref> As Covenant troops entered the ship, Requiem began to scan the ''Dawn'' for a "[[Reclaimer]]".<ref name="Dawn"/>

==History==
===Opening skirmishes===
Cortana awoke John-117 from cryostasis and informed him of intruders on the ''Forward Unto Dawn''. When the duo found out that there was a Covenant fleet around the ''Dawn'' and one of the {{Class|CRS|light cruiser}}s was moving into a intercept course, Cortana instructed John to fire one of ''Dawn'''s missiles at the cruiser. The Spartan battled through the wreckage and managed to destroy the cruiser moments before it fired its energy projector. While on the outer hull, John was scanned by a beam coming from Requiem, which then opened its interior for the Reclaimer. ''Forward Unto Dawn'', along with several Covenant cruisers, was pulled into Requiem's interior.<ref name="Dawn"/>

John-117 and Cortana survived the fall into Requiem's middle shell. They decided to hijack one of the surviving Covenant ships to return to Earth, where they would be able to find [[Catherine Halsey|Dr. Catherine Halsey]] to assess Cortana's [[rampancy]]. However, {{UNSCship|Infinity}} had picked up ''Forward Unto Dawn'''s distress beacon and was approaching the shield world. While looking for a way to contact ''Infinity'', John and Cortana accidentally triggered Requiem's guardians, the Prometheans.<ref>'''Halo 4''', campaign level ''[[Requiem (level)|Requiem]]''</ref> The Prometheans attacked the Spartan as well as the Covenant. In an effort the warn ''Infinity'' of Requiem's gravity well, the Spartan-AI team disabled two energy pylons inside Requiem's core in order to eliminate interference emitted from a satellite in the core. When John attempted to contact ''Infinity'' in the satellite, it was revealed that the [[Didact]] had purposely manipulated ''Infinity''<nowiki>'</nowiki>s signal to trick John-117 into releasing him from his [[Cryptum]]. The Didact openly declared war on humanity and reassumed control of his mechanized Prometheans; viewing the Didact as a living god, the Covenant forces followed suit. John escaped Requiem's core just as ''Infinity'' entered Requiem's outer shell.<ref>'''Halo 4''', campaign level ''[[Forerunner (level)|Forerunner]]''</ref>

===''Infinity''<nowiki>'</nowiki>s arrival===
''Infinity'' crashed into a jungle inside Requiem and was immediately attacked by Promethean and Covenant forces. During the attack, ''Infinity''<nowiki>'s</nowiki> commanding officer, [[Andrew Del Rio|Captain Andrew Del Rio]], deployed [[UNSC Marine Corps|Marines]] and [[SPARTAN-IV Program|SPARTAN-IVs]] for reconnaissance, believing that the ''Infinity'' would be able to fend off her attackers while providing support for ground forces. The ill-prepared Marines were overwhelmed by the unfamiliar Prometheans and suffered heavy casualties. In addition to losing their landing zones, many [[D79-TC Pelican|Pelican dropships]] were shot down. ''Infinity'' was eventually boarded, allowing the Didact to extract information about the [[Composer]], a Forerunner superweapon, from the ship's mainframe. John-117 joined Commanders [[Thomas Lasky]] and [[Sarah Palmer]] just as Captain Del Rio recalled ground forces to ''Infinity''. John cleared a landing zone for the UNSC forces and headed to ''Infinity''<nowiki>'s</nowiki> crash site. There, John-117 and a squad of SPARTAN-IVs broke through to one of ''Infinity''<nowiki>'s</nowiki> hangar bays. John piloted a [[HRUNTING/YGGDRASIL Mark IX Armor Defense System|Mantis assault mech]] and fought through ''Infinity''<nowiki>'s</nowiki> maintenance corridors to some of the ship's weapon systems. After John destroyed the Covenant jammers near the control terminals, ''Infinity'' disabled two ''CRS''-class light cruisers and damaged the Didact's Cryptum, prompting the Forerunner to retreat.<ref name="Infinity"/> The repaired ''Infinity'' left her crash site, but since she was still under the effect of the Requiem's gravity well, Captain Del Rio sent John-117 and [[Gypsy Company]] to take down the Forerunner anti-air particle cannons near the gravity well generator.<ref name="rec">'''Halo 4''', campaign level ''[[Reclaimer (level)|Reclaimer]]''</ref>

===Assault on the gravity well generator===
Gypsy Company, aboard a [[Mammoth]] and led by Commander Lasky, destroyed the first and second anti-air particle cannons. However, a Covenant [[Deployment Platform Type-56 Ground Support/Ultra Heavy|Lich]] heavily damaged the Mammoth. Even though John-117 and a SPARTAN-IV team destroyed the Lich, the Mammoth was forced to stop when it approached a Forerunner structure.<ref name="rec">'''Halo 4''', campaign level ''[[Reclaimer (level)|Reclaimer]]''</ref>

John entered the structure and, with Cortana's help, disabled the last two anti-air cannons. Cortana suddenly disappeared, so John searched the structure for her. He was taken to an archived personality of the [[Librarian]], the Didact's wife and the one who saved humanity from the [[Halo Array|Halos]]. The Librarian informed John of the Didact's plan to imprison humanity into digital form with the Composer. In doing so, she altered John-117's genes, an action that would prove itself useful when the Didact's forces [[Raid on Ivanoff Station|raided Ivanoff Station]]. John-117 returned to a UNSC convoy led by [[Master Sergeant]] [[Marcus Stacker]] and eventually reached Requiem's gravity well generator. Using targeting data provided by the Spartan, ''Infinity'' destroyed the generator.<ref name="rec"/>

===The Didact's departure===
Despite their explanation, Del Rio was skeptical, citing it as hallucinations from John’s age and Cortana’s rampancy. When he ordered the ''Infinity'' to return to [[Earth]], Cortana gave a short outburst of rage followed by John leaving to stop the Didact alone. Departing from the ship with a [[D79-TC Pelican|Pelican gunship]] given to them by Lasky, the Chief set out to stop the Forerunner, almost succeeding but failing; the Didact managed to regain his ship, the ''[[Mantle's Approach]]'' and promptly left for Ivanoff Station to retrieve the [[Composer]]. He was followed by a fleet of Covenant [[Lich]]es and the Master Chief who stowed away aboard one.<ref>'''Halo 4''', campaign level ''[[Reclaimer (level)|Reclaimer]]''</ref>

===Infinity<nowiki>'</nowiki>s return===
In February 2558, UNSC ''Infinity'' returned to Requiem. {{Class|Charon|light frigate}}s were deployed to protect the ship and establish a position in orbit. Spartan-IV fireteams were sent into Requiem to support the UNSC Marine Corps, Armies and Air forces.<ref name="s1e1">'''Spartan Ops''', [[S1/Departure|S1E1 ''Departure'']]</ref> UNSC forces set up several research bases: [[Copernicus Base]], [[Galileo Base]], and [[Magma Base]]. Other locations, such as areas designated "[[Quarry]]", "[[Fortress]]'', and "[[Apex]]", were often contested for control.

During an interception on a Covenant archaeological dig, [[Fireteam Crimson]] discovered one of the three [[Requiem translocation artifact]]s on Requiem in "[[the Cauldron]]".<ref name="s1e1"/> The artifact was brought onboard ''Infinity'', where it was examined [[Henry Glassman]].<ref name-"s1e2">'''Spartan Ops''', [[S1/Artifact|S1E2 ''Artifact'']]</ref> Glassman, who accidentally activated it, was translocated to Requiem and became a prisoner of the Covenant remnant. There, he was brought to Jul 'Mdama and was forced to find a method to activate the device containing the Librarian AI. Captain Lasky requested Doctor [[Catherine Halsey]] to be brought onboard ''Infinity'' to study the translocation artifact. Halsey found out that the artifact was communicating with the ship's system's, notably the engine, and transmitting signal to a location in Requiem. On Requiem, Sangheili [[Parg Vol]] was hunted and eventually assassinated by Fireteam Crimson.<ref name="s1e3">'''Spartan Ops''', [[S1/Catherine|S1E3 ''Catherine'']]</ref>

{{Expand-section}}

==List of appearances==
*''[[The Commissioning]]'' {{1st}}
*''[[Halo 4]]''

==Sources==
<references/>