Editing Attack on Installation 00

{{Status|Canon}}
{{Conjectural title|1}}
{{Disambig header|the assault on the Ark by the [[Banished]]|other battles that occurred on the Ark|Battle of Installation 00 (disambiguation)}}
{{Battle infobox
|name=Attack on Installation 00
|image=[[File:HW2 PL Graveyard Art.png|350px]]
|prev=*[[Subjugation of Earth]]
*[[Mission to Luna]]
|conc=[[Created conflict]]
|next=[[Battle of Installation 09]]
|conflict=[[Post-Covenant War conflicts]]
*[[Second Ark Conflict]]{{Ref/Game|Id=The Graveyard|HW2|Phoenix Logs|Detail=The Graveyard}}
|date=[[2558#November|November 25, 2558]]{{Ref/Reuse|The Graveyard}}
|place=[[Installation 00]]{{Ref/Reuse|The Graveyard}}
|result='''Banished victory'''{{Ref/Reuse|The Graveyard}}
*Installation 00 occupied
|side1=[[United Nations Space Command]]{{Ref/Reuse|The Graveyard}}
|side2=[[Banished]]{{Ref/Level|Id=Hold the Line|HW2|Hold the Line}}
|side3=
|commanders1=
|commanders2=*[[Atriox]]{{Ref/Level|Id=The Signal|HW2|The Signal}}
*[[Decimus]]{{Ref/Level|Id=A New Enemy|HW2|A New Enemy}}
|commanders3=
|forces1=
*[[Ark Security Detachment]]
*[[M12 Warthog]]s
*Multiple [[HRUNTING/YGGDRASIL Mark IX Mantis|Mantises]]{{Ref/Game|HW2|Phoenix Logs|Detail=Mantis}}
|forces2=
*''[[Enduring Conviction]]''{{Ref/Reuse|Hold the Line}}
*At least 2 [[Gydrozka Workshop Blisterback]]s{{Ref/Reuse|The Graveyard}}
*At least 1 [[Type-26 Banshee]]{{Ref/Reuse|The Graveyard}}
*At least 1 [[Barukaza Workshop Scarab]]{{Ref/Reuse|The Graveyard}}
*At least 1 {{Pattern|Dextro Xur|Spirit}}{{Ref/Reuse|The Graveyard}}
*Ground forces
**[[Jiralhanae]]{{Ref/Reuse|The Graveyard}}
|forces3=
|casual1=Near total; only fifteen of the [[Henry Lamb Research Outpost|research outpost's]] personnel survived the initial attack
|casual2=Very light
|casual3=
}}
{{Quote|That ship brought these monsters. Killed everyone I was supposed to protect.|Isabel on the arrival of the ''Enduring Conviction''{{Ref/Reuse|Hold the Line}}}}
On [[2558#November|November 25, 2558]], an [[Covenant remnants|ex-Covenant]] mercenary organization known as the [[Banished]] launched an '''attack''' on [[United Nations Space Command]] research outposts established on [[Forerunner]] [[Installation 00]].{{Ref/Reuse|The Graveyard}} The assault followed the unexpected shutdown of the installation's [[Portal at Voi|portal to Earth]] during [[Cortana]]'s [[Subjugation of Earth|takeover]] of [[Earth]].{{Ref/Level|Id=Guardians|H5G|Guardians}}

==Background==
The extragalactic [[Installation 00]] was first accessed by galactic forces in the closing weeks of the [[Human-Covenant War]] in [[2552]], accessed via a [[Portal at Voi|large portal]] located in [[Voi]], [[Africa]], on [[Earth]]. During the fighting, a joint UNSC-[[Covenant separatists]] force fought against the predominantly [[Jiralhanae]]-led loyalist [[Covenant]] forces led by the [[Prophet of Truth]]. At the end of the conflict, the Covenant were defeated and a [[Installation 08|nascent Halo ring]] detonated over the Ark - causing immense damage to the installation.

The Ark was abandoned after that (save for a small contingent of [[Dhas Bhasvod's Covenant|Covenant remnants]] left hiding inside the Prophet of Truth's [[Anodyne Spirit|flagship]]), with only a minor expedition from the scout ship ''[[UNSC Rubicon|Rubicon]]'' in [[2553]]. In [[2555]], the Ark's [[monitor]] [[000 Tragic Solitude]] initiated a plan with the intent of repairing the installation, intending to reactivate the portal on Earth to use [[human colonies]] as resource bases through which it would restore the Ark to full operational status. This plan was [[Operation: FAR STORM|ultimately foiled]] by a joint UNSC-[[Swords of Sanghelios]] team, after which the portal remained open and a large contingent established on the Ark to explore and study the installation. This contingent was centred on the [[Henry Lamb Research Outpost]], itself named after [[Henry Lamb|a scientist]] who had died in the 2555 excursion onto the installation.

The [[Banished]] were formed at the tail end of the Human-Covenant War, initially as a Jiralhanae rebellion against the Covenant empire - before growing into a major splinter faction following the Covenant's collapse into [[Great Schism|civil war]]. During the [[Post-Covenant War conflicts|post-war era]], the Banished accrued power and prestige, culminating in [[Warmaster]] [[Atriox]]'s interest in the Ark as a means of securing the Banished position in the galactic balance of power. Their first expeditionary group were deployed to the Ark in a fleet led by their flagship ''[[Enduring Conviction]]'' in [[2558]],{{Ref/Reuse|stream}} beginning a long journey that culminated in ''Enduring Conviction''{{'}}s arrival in November of that year.{{Ref/Book|Enc22|Page=423}}

===Prelude===
On [[2558#October|October 28, 2558]], the [[smart AI]] Cortana, leader of an [[AI]] conglomerate known as the [[Created]], arrived at Earth with Forerunner [[Guardian]]s. Firing an [[EMP]] blast at the planet, Cortana caused the shutdown of Earth's defenses.{{Ref/Reuse|Guardians}} In the wake of the attack, the Ark's portal, located in [[Voi]], shut downto prevent the Created from being able to access the installation.{{Ref/Book|Id=Mythos202|HM|Page=202}} With the [[slipspace portal]] gone the UNSC research teams on the installation's surface found themselves stranded.{{Ref/Reuse|A New Enemy}}

==The attack==
[[File:HW2 PL TurnOfTheScrew Art.png|thumb|left|250px|Survivors of the attack try to make it on their own.]]
{{Quote|As we looked down at the horror below, we saw several hulking outlines move amongst the shadows. Jiralhanae, I think. Brutes. They were everywhere. The air was filled with the smell of burning ozone as a couple of bright, electric blue shapes arced their way toward us. We scattered as the [[plasma]] blast hit, vaporizing the trees nearby and showering us with ash and debris.|Nathaniel Palmer describing the attack in his diary{{Ref/Reuse|The Graveyard}}}}
On [[2558#November|November 25, 2558]],{{Ref/Reuse|The Graveyard}} almost one month after the portal's shutdown, the Banished arrived at the Ark in their [[flagship]] ''Enduring Conviction'', leading a fleet comprised of their [[Jiralhanae]], [[human]], [[Sangheili]], [[Unggoy]], [[Mgalekgolo]], and [[Huragok]] forces.{{Ref/Reuse|Hold the Line}}{{Ref/YouTube|Id=stream|fYaxRoAf96s|Channel=Halo|VidName=Halo Lore Stream: The Halo Array|Time=4251|Quote=There's some stuff in the secondary materials for Halo Wars 2, regarding the fleet that actually went to the Ark with the Enduring Conviction. [...] some of those ships are out at other installations that are near the Ark. So there's the Ark, and there's facilities that are out near the Ark that we don't see - some of those ships are out there doing that. You could say it's a cost function of how many ships we could show in the cutscenes and stuff. Yeah, it [Enduring Conviction] wasn't the only ship that was there.
|Quotee=Kenneth Peters|Detail=1:10:51}} The Banished deployed Jiralhanae forces, [[Gydrozka Workshop Blisterback|Blisterback]] mobile [[missile]] platforms, [[Barukaza Workshop Scarab|Scarab]] assault platforms, [['Ahtulai Workshop Banshee|Banshee aircraft]], as well as other vehicles, and began raiding the UNSC research outposts on the surface. Though the UNSC inhabitants of the installation offered resistance against the invaders, they proved no match for the alien onslaught as they were mostly researchers and civilians.{{Ref/Reuse|The Graveyard}} 

One such research outpost, the Henry Lamb Research Facility, was attacked by Banished forces led by Atriox's lieutenant, [[War Chief]] [[Decimus]],{{Ref/Reuse|A New Enemy}} before being directly bombarded by the ''Enduring Conviction''{{'}}s [[energy projector]]. A group of fifteen of the outpost's personnel, including archaeologist [[Nathaniel Palmer]] and scientist [[Brewer]], managed to barely escape the assault.{{Ref/Reuse|The Graveyard}} By [[2559#January|January 17, 2559]], the group had atrophied to eight.{{Ref/Game|Id=Turn of the Screw|HW2|Phoenix Logs|Detail=The Turn of the Screw}}
{{Clear|left}}
==Aftermath==
[[File:HW2-Banished-02.jpg|thumb|250px|After the attack, the Banished established their forces on the installation.]]
{{Main|Second Ark Conflict}}
The destruction of the UNSC presence on the Ark allowed the Banished to establish their forces and set up salvage operations{{Ref/Reuse|A New Enemy}} on the installation before the eventual arrival of the long-lost UNSC vessel, the {{UNSCShip|Spirit of Fire}},{{Ref/Reuse|The Signal}} on March 28, 2559.{{Ref/Game|Id=Alice log 1|HW2|Phoenix Logs|Detail=Alice-130 Report #1}} This led to the beginning of a [[Second Ark Conflict|long war of resistance]] on the Ark as ''Spirit of Fire''{{'}}s forces struggled to kick the Banished off the installation.
{{Clear|right}}
==Gallery==
<gallery>
File:HW2 PhoenixLog The Graveyard.png|Full Phoenix Log banner artwork depicting the attack.
File:HW2 PhoenixLog The Turn of the Screw.png|Full Phoenix Log banner artwork depicting the survivors.
</gallery>

==List of appearances==
*''[[Halo Wars 2]]'' {{1st}}

==Sources==
{{Ref/Sources}}

{{Engagements in the Second Ark Conflict}}
{{Post-Covenant War conflicts}}

[[Category:Post-Covenant War conflicts]]
[[Category:Banished victories]]