Editing UNSC Pillar of Autumn

{{Center|'''''Pillar of Autumn''' redirects here. For more articles of the same name, see [[The Pillar of Autumn|Pillar of Autumn (disambiguation)]].''}}

{{Infobox/Ships

|name           = UNSC ''Pillar of Autumn''

|image           = [[File:PoA Reach.jpg|300px]]

|caption        =

|country              = [[Unified Earth Government]]

|class               = {{Class|Halcyon|light cruiser}}{{Ref/Reuse|Warfleet}}

|namesake            =  

|identification      = C-709{{Ref/Reuse|Warfleet}}

|architect            = *[[Robert McLees (ship designer)|Dr Robert McLees]]{{Ref/Reuse|Warfleet}}

*[[Adam Crokett|Senior Engineer Crokett]] {{C|refit}}{{Ref/Reuse|Warfleet}}

|launched            = December 1, 2510<ref name= "data drop"/>  

*[[Cortana]]

*[[Wellsley]]

|motto                = ''Ad Arcendam Hostium'' (''To Repel the Enemy'')<ref name="Mythos95">'''[[Halo Mythos: A Guide to the Story of Halo|Halo Mythos]]''', ''pages 94-95''</ref>

|badge                =

|hide-characteristics=

|type            = [[Cruiser]]

|length          = {{Convert|1171|m|ft|sp=us}}<ref name= "data drop"/>

|width          = {{Convert|352|m|ft|sp=us}}<ref name= "data drop"/>

|height          = {{Convert|398|m|ft|sp=us}}<ref name="Warfleet">Halo: Warfleet, pg. 25</ref>

|mass            =*'''Pre-[[2552]] refit''': 11 million tonnes{{Ref/Reuse|Enc22}}

*'''Post-2552 refit''': 9 million metric tons{{Ref/Reuse|Warfleet}}

|power          =*'''Pre-2552 refit''': 3 [[Fusion drive#Mark II Hanley-Messer DFR|Mark II Hanley-Messer DFR]]s<ref name= "data drop"/>

*'''Post-2552 refit''': Experimental reactor set {{C|1 primary, 2 secondary}}{{Ref/Reuse|FoRC29}}{{Ref/Note|On page 274 of ''Halo: The Fall of Reach'', it is stated that ''Pillar of Autumn''<nowiki>'</nowiki>s refit power plant consists of a single main reactor linked to two secondary ones; this arrangement is referenced again later on when Cortana gives a damage assessment of the ship to Captain Keyes. However, in ''Halo: Combat Evolved'', it is implied that each of the four exhaust manifolds is linked to an individual fusion reactor, each of which is destroyed by John-117 in the [[The Maw|final level]]. This page follows the information given in ''Halo: The Fall of Reach'', as the novel describes the reactor system in more detail.}}

|maneuver drive =*'''Pre-2552 refit''': 3 Mark II Hanley-Messer DFR<ref name= "data drop"/>

**2 [[Boglin Fields|Boglin Fields']] Starfire-IV [[Fusion drive|fusion rockets]] {{C|primary}}{{Ref/Reuse|Warfleet}}

**[[Emergency thruster]]<ref name="FoRC33">'''Halo: The Fall of Reach''', ''Chapter 33''</ref>

|slipspace drive = [[Kawanishi Engineering|Kawanishi Engineering's]] [[Shaw-Fujikawa Translight Engine#CODEN series|SED-2550X]] {{C|Series V CODEN}}{{Ref/Reuse|Warfleet}}

|crew           = *1,000 Naval personnel{{Ref/Reuse|Warfleet}}

|complement      =  

*800 Marines{{Ref/Reuse|Warfleet}}

**400 ODSTs{{Ref/Reuse|Warfleet}}

*20 [[M808B Scorpion]]s{{Ref/Reuse|Warfleet}}

*9+ [[M145D Rhino]]s <small>(previously)</small>

|sensors        = <!--Describes sensors and whatnot-->

|ew              = <!--Describes electronic warfare capabilities-->

|armaments      =

'''Post-[[2550]] refit''': {{Ref/Reuse|data drop}}

*1 [[MAC]]<ref name= "data drop">[https://www.halopedia.org/File:DDR-A340024-1115-08-27-52.pdf '''Halo Waypoint''': ''Data Drop 5'']</ref>

*10 [[Archer missile#M58 Archer|M58 Archer missile pods]]{{Ref/Reuse|data drop}}

*40 [[M910 Rampart point defense network|M910 Rampart point defense guns]]{{Ref/Reuse|data drop}}

*1 [[Magnetic Accelerator Cannon#Specialized and modified versions|Mark II, Light Coil - 56A2D4/MAC]]<ref name="waypointarticle">[https://www.halowaypoint.com/en-us/universe/vehicles/pillar-of-autumn '''Halo Waypoint''': ''Pillar of Autumn'']</ref>

*4 [[Shiva-class nuclear missile]]s mounting [[HAVOK tactical nuclear weapon|HAVOK warhead]]s<ref name="FoRC29">'''Halo: The Fall of Reach''', Chapter 29</ref>

*32 M58 Archer missile pods{{Ref/Reuse|Warfleet}}

*18 M910 Rampart point defense guns<ref name= "Warfleet" />

*8 [[Spitfire naval coilgun battery#Mark 33 Spitfire|Mark 33 Spitfire naval coilgun batteries]]{{Ref/Reuse|Warfleet}}

*6 [[M66 Sentry autocannon]]s{{Ref/Reuse|Warfleet}}

|aircraft        = *5 [[GA-TL1 Longsword]] fighters{{Ref/Reuse|Warfleet}}

*12 [[D77-TC Pelican]]s{{Ref/Reuse|Warfleet}}

*2 [[D96-TCE Albatross]]{{Ref/Reuse|Warfleet}}

*At least 18 [[Class-3 Bumblebee]]s

*216 [[Single Occupant Exoatmospheric Insertion Vehicle|M8823 SOEIV]] drop pods{{Ref/Reuse|Warfleet}}

*[[UH-144 Falcon]]s<ref name="FTR"/>

{{Quote|multi=more|q1=There was only one ship.|[[Thel 'Vadam]]ee|q2=One? Are you sure?|[[High Prophet of Truth]]|q3=Yes. They called it the ''Pillar of Autumn''.|Thel 'Vadamee|Conversation between 'Vadamee and the High Prophet of Truth.<ref name="Heretic">'''[[Halo 2]]''', campaign level ''[[The Heretic]]''</ref>}}

'''UNSC ''Pillar of Autumn''''', ([[hull classification symbol]] '''C-709'''),<ref name="HCESGuide">'''[[Halo: Combat Evolved: Sybex Official Strategies & Secrets]]''', ''page 60''</ref><ref name="BN">[http://halo.bungie.net/News/content.aspx?type=topnews&link=BWU_012910 '''Bungie.net''': ''Bungie Weekly Update 01.29.10'']</ref> was a {{Class|Halcyon|light cruiser}} in the [[UNSC Navy]]. It was informally referred to as the ''Autumn'', and, in some cases, the ''Pillar''.<ref>'''Halo: The Flood''', ''page 13''</ref><ref>'''Halo: Reach''', campaign level ''[[The Pillar of Autumn (Halo: Reach level)|The Pillar of Autumn]]'' (objective description)</ref><ref>'''Halo: First Strike''', ''page 103''</ref> It was the sister ship of {{UNSCShip|Dawn Under Heaven}}<ref name="interview">[http://halo.bungie.net/News/content.aspx?type=topnews&cid=6 '''Bungie.net''': ''Jason Jones Interviewed By You'' (12/18/2001)]</ref> and {{UNSCShip|Toulouse}}.<ref name="canon fodder">[https://www.halowaypoint.com/en-us/news/rockin-railin '''Halo Waypoint''': ''Halo Community Update - Rockin' & Railin{{'}}'']</ref>

The cruiser was guided to the [[Soell system]] by the [[smart AI]] [[Cortana]]. There it was engaged by a [[Fleet of Particular Justice|Covenant fleet]] guarding [[Installation 04]]. Keyes crash-landed the ship on the installation where the surviving crew continued the battle against the Covenant, and later, the [[Flood]]. The ship's sole remaining combat-effective SPARTAN-II, [[John-117]], was forced to destabilize the ''Autumn''{{'}}s fusion reactor, destroying both the ship and the ringworld, to prevent the Installation from being fired.  

==Service history==

UNSC ''Pillar of Autumn'' was constructed at the [[Reyes-McLees Shipyards]] on [[Mars]]. The ship began construction in [[2507]],{{Ref/Reuse|Mythos95}} and was launched on [[2510|December 1, 2510]].<ref name= "data drop"/>

 

The cruiser was decommissioned with the remaining {{class|Halcyon|light cruiser}}s, but was reactivated as the war worsened. ''Pillar of Autumn'' was pulled from long-term storage and was refitted in [[2550]] to serve as an emergency support ship in a conflict near [[Zeta Doradus]].{{Ref/Reuse|HCESGuide}}{{Ref/Reuse|FoRC25}}

By [[2552]], it was obvious to the UNSC that the war could not be ended with conventional military action. A desperate plan, known as [[Operation: RED FLAG]] was conceived to end the war by capturing Covenant leaders and forcing the enemy to the negotiating table. [[Reach|A colony world]] would be sacrificed to the Covenant to allow SPARTAN-II commandos to board and disable a Covenant ship, locate the Covenant [[High Charity|homeworld]], and abduct the targets. ''Pillar of Autumn'' was selected on August 25 by the AI Cortana to disable an enemy ship and deliver the Spartans aboard; the ship was selected for the ''Halcyon''-class's durability, despite its class's usual lack-luster offensive capabilities.{{Ref/Reuse|FoRC25}} Command of the ship was given to [[Jacob Keyes|Captain Jacob Keyes]].

The cruiser received another refit designed by Senior Engineer Adam Crokett{{Ref/Reuse|Warfleet}} for the new mission, including a state-of-the-art fusion power plant and improved weaponry.{{Ref/Reuse|FoRC25}} Furthermore, the command bridge was upgraded with a Tier III datacore to house Cortana and the drop pod bays were significantly expanded.{{Ref/Reuse|Warfleet}} After the refit, Cortana was transferred to handle the shakedown.

[[File:HM-PoA-escape.jpg|300px|thumb|''Pillar of Autumn'' pushes through the Covenant blockade and escapes Reach.]]

''Pillar of Autumn'' was prepared to deploy on August 30. However, before it could depart the [[Epsilon Eridani system]] it was recalled to Reach; the UNSC fleet was mustering in preparation for an imminent Covenant attack on the planet. However, Cortana remained in control as the ship's normally assigned AI was not yet operational. At the opening of the battle, the ''Pillar of Autumn'' was engaged by a {{Pattern|Ruma|light carrier}} and quickly destroyed it with its modified MAC gun.

It was hoped an opportunity to capture an enemy ship would present itself, however, the course of the battle forced the Spartans to deploy on other missions. [[Blue Team]] went to Reach's [[Gamma Station]] to enforce the [[United Nations Space Command Emergency Priority Order 098831A-1|Cole Protocol]], while [[Red Team]] went planetside to reinforce the [[orbital defense generator]]s. While the cruiser performed well, the battle was lost as the [[orbital defense platform]]s fell silent. There was only time to recover the remnants of Blue Team (John-117 and the clinically dead [[Linda-058]]) and a Marine fireteam led by [[Avery Johnson]] that was also onboard Gamma Station, before the ship was forced to flee the system.

During the battle over Reach, the ''Pillar of Autumn'' attacked and destroyed a [[Kewu-pattern battleship|Covenant "sniper ship"]] in single combat. This prototype vessel was responsible for the destruction of many powerful UNSC warships. The unlikely victory of the ''Pillar of Autumn'', for a brief moment, left her as one of the most successful and resilient ships in the Navy. However, the ship was heavily damaged in the fight and its main reactor was rendered inoperable.

At some point during the conflict, the ''Pillar of Autumn'' executed a [[Class-L flash-dock]], landing at the [[Asźod ship breaking yards]] to rescue any survivors on the planet and retrieve [[Cortana|a package]] which the remnants of [[NOBLE Team]] were tasked with delivering.<ref>'''Halo: Reach''', campaign level ''[[The Package]]''</ref> During [[Battle of Asźod|the battle]], as NOBLE Team approached, the ''Pillar of Autumn'' used its point-defense guns to help clear the skies and sent forces into the drydocks to hold them. When [[SPARTAN-B312|Noble Six]] and [[Emile-A239]] arrived, Emile manned an [[Mark 2488 Magnetic Accelerator Cannon|Onager mass driver]] set up by the UNSC forces to hold off the Covenant air support. After the UNSC forces took out Covenant attackers on a landing platform, Keyes personally led a Pelican to get the package. However, Emile was killed by a [[Sangheili Zealot]] and a {{Pattern|Ket|battlecruiser}} arrived to prevent the ''Pillar of Autumn'' from escaping. Using the mass driver, Noble Six destroyed the battlecruiser and the ''Pillar of Autumn'' was able to escape into space using [[R7 thrust coupling]]s.<ref>'''Halo: Reach''', campaign level ''[[The Pillar of Autumn (Halo: Reach level)|The Pillar of Autumn]]''</ref>

The ''Pillar of Autumn'' was supposed to have made a random [[Slipstream space|Slipspace]] jump in accordance with the Cole Protocol. However, Cortana surreptitiously guided the ship to the [[Soell system]] and, ultimately, to [[Installation 04]] instead. The AI used coordinates obtained from two [[Forerunner]] artifacts: [[Sigma Octanus IV artifact|one]] on [[Sigma Octanus IV]],<ref>'''Halo: The Fall of Reach''', Epilogue, page 336</ref> and [[Babd Catha Forerunner complex|one]] underneath [[Reach]]. The Covenant pursued along the cruiser's exit vector and arrived at Soell first with a battle group of {{Pattern|Ket|battlecruiser}}s.

[[File:Autumn Arrival.png|thumb|250px|''Pillar of Autumn'' approaches Halo [[Installation 04]].]]

Captain Keyes ordered the crew to abandon ship. John-117 was given Cortana for safekeeping, and ordered to keep the AI out of enemy hands. The crew left the ship for the ring in whatever craft were available and the [[cryo-chamber|cryo pods]] were jettisoned. Keyes directed ''Pillar of Autumn'' on a course to crash land on the ring. The Covenant finally began hitting the ship with plasma torpedoes, but the cruiser survived the landing reasonably intact, though damaged beyond repair. The Covenant soon swarmed the ship and installed a security detail of two Banshees and six Ghosts to patrol the ship, though a massive [[Raid on the Pillar of Autumn|raid]] led by Lieutenant [[Melissa McKay]] unseated the Covenant from the ship temporarily, allowing the survivors to transfer supplies from the ship to [[Alpha Base (Installation 04)|Alpha Base]].<ref>''Halo: The Flood, chapter six''</ref>

[[File:AutumnMawCEA.jpg|thumb|left|250px|The ''Autumn''{{'}}s final resting place, shortly before its destruction.]]  

[[File:H2A-AlphaHaloDestruction.jpg|thumb|300px|Installation 04 breaks apart as a result of the ''Autumn''{{'}}s detonation.]]

In [[2556]], a fragment of the ring that escaped destruction called [[Alpha Shard]] was discovered. The [[supernova]]-like effects of the ''Autumn's'' detonation created [[Element 120.V|a new element]] unique to the shard fatal only to humans. This element was mined by smugglers from [[Aleria]] and transformed into a [[bioweapon]] [[Terrorist attack on Sedra City|used]] on the [[Outer Colony]] of [[Sedra]] by [[terrorist]]s. After the element was traced to Alpha Shard, Private [[Talitha Macer]] correctly surmised that the element was created by the explosion created when the ''Pillar of Autumn'' was destroyed. After this theory was confirmed, a joint [[ONI]]-[[Sedran Colonial Guard]] team underwent [[Mission to Alpha Shard|a mission]] to Alpha Shard, destroying the deposits of the new element with a [[HAVOK tactical nuclear weapon]] at the cost of most of the team.<ref name="Nightfall">'''[[Halo: Nightfall]]'''</ref>

==Design details==

[[File:HWF PillarOfAutumn CrossSection.jpg|thumb|left|300px|A cross-sectioned view of the ''Pillar of Autumn''.]]

''Pillar of Autumn'' was roughly 43 years old at the time of its escape from Reach and later destruction on Installation 04. It was a cruiser of the ''Halcyon''-class, the lightest cruisers in the UNSC Fleet.<ref name="FoRC25">'''Halo: The Fall of Reach''', Chapter 25</ref>

 

The ''Pillar of Autumn'' was one of only eleven ''Halcyon''-class cruisers to be built with a unique internal frame that was designed by [[Robert McLees (ship designer)|Doctor Robert McLees]]. Incorporating a series of interstitial honeycombs and cross-bracings, it was deemed unnecessarily over-massed and costly due to a series of cross-bracings and interstitial{{Ref/Reuse|FoRC25}} [[Titanium-A armor]] honeycombs.{{Ref/Reuse|FoRC29}} This led to the design being dropped from future models of ''Halcyon''-class ships,{{Ref/Reuse|FoRC25}} and quickly led to most of these ships being removed from service.{{Ref/Reuse|data drop}} However, this unusual framing scheme allowed the ship to function even after sustaining critical levels of damage.{{Ref/Reuse|HCESGuide}} This offset its usage of older, heavier armor patterns,{{Ref/Reuse|Enc22}} which provided inferior protection than what was considered standard in 2552.{{Ref/Reuse|FoRC25}}

These protective qualities were improved as part of the ''Autumn''<nowiki>'s</nowiki> refit in 2552. The hull was upgraded to the latest Titanium-A ablative armor plating, which resulted in great savings in terms of volume and mass.{{Ref/Reuse|Enc22}} Hydraulic reinforcements activated during emergencies complemented the existing toughness of its frame.{{Ref/Reuse|FoRC29}} The refit substantially expanded both the [[SOEIV]] launch bays and hangar capacity, with the latter made possible by sacrificing long-term accommodations. It also received an Omega-pattern bridge with a Tier-III datacore.{{Ref/Book|Enc22|Id=Enc22|Chapter=Human Ships, Cruisers|Page=119}} Protruding from its front face is a foremast that is equipped with [[slipspace]] navigation sensors and hardened [[proselytization network]] transponders. A planetary scanning array is mounted just below its bridge, which is outfitted with planetary survey sensors and probe/satellite launchers. Four compact auxiliary fusion rockets are installed on either side of the cruiser, and while they are capable of a high-thrust, they are considered inefficient in their design. At the very top of the engine cowling is a multipurpose scan array, which contains tactical sensors and an electronic eavesdropping suite.{{Ref/Reuse|Warfleet}}.

[[File:POA Panorama.jpg|thumb|250px|The refitted ''Pillar of Autumn''.]]

Prior to being refit for the Spartan mission, ''Pillar of Autumn'' was equipped with three Mark II Hanley-Messer deuterium [[Fusion drive|fusion engines]], which supplied only 10% the power of the standard [[2552]] UNSC Navy reactor. ''Pillar of Autumn'' was refitted with a set of improved nuclear fusion engines that featured two smaller reactors around a larger one, which were capable of boosting the overall power output by 300% for a short time if needed.{{Ref/Reuse|FoRC29}}

Fusion reactors generate extreme heat which must be removed in order for them to remain active without overheating. The Autumn's overhauled reactors were an especially severe case of this. Usually, the excess heat was conducted to a chemical agent which would then vent into space. However, the ''Autumn''{{'}}s upgraded specifications also included an upgraded cooling system, which featured a "laser-induced optical slurry of ions chilled to near-absolute zero", which was far more efficient than the typical method and removed the reliance on expendable chemical temperature-control substances. In essence, the amount of excess heat removed by the new system increased as the reactors' output did. This self-regulating and self-cooling power plant was critical in combat since it virtually eliminated a commander's concerns about overheating and slagging a ship's engines.{{Ref/Reuse|FoRC29}}

''Pillar of Autumn's'' reactors were able to be [[Fusion drive#Use as improvised weapons|overloaded by explosives]], either grenades or rockets, destroying the vulnerable vent cores. Once these were destroyed, the reactors began to go critical, resulting in temperatures of over one hundred million degrees and a thermonuclear explosion large enough to tear apart a Halo installation.<ref>'''[[Halo: Combat Evolved]]''', campaign level ''[[The Maw (Level)|The Maw]]''</ref> This explosion was later revealed to be similar in nature to a [[supernova]] and resulted in the creation of [[Element 120.V|a new element]] on [[Alpha Shard|a surviving shard]] of the installation.{{Ref/Reuse|Nightfall}}

In 2550, the ''Pillar of Autumn'' was reactivated in order to support operations near the Zeta Doradus system. As part of this refit, which had also been applied to other ''Halcyon''-class cruisers, it received one MAC and six additional [[Archer missile#M58 Archer|M58 Archer missile]] pods,{{Ref/Reuse|FoRC25}} bringing its total missile arsenal to 10 pods. Each of these pods carried a total of 24 missiles. For anti-aircraft and anti-missile protection, it retained its existing 40 [[M910 Rampart point defense network|M910 Rampart point defense gun]]s.<ref name= "data drop"/>

A subsequent refit was given to the ''Pillar of Autumn'' to prepare it for its role in Operation: RED FLAG in 2552. As part of this, its arsenal was drastically expanded, resulting in a final armament of:

*One [[Magnetic Accelerator Cannon|Mark II, Light Coil - 56A2D4/MAC gun]]{{Ref/Reuse|waypointarticle}} that ran two-thirds the length of the cruiser{{Ref/Reuse|Warfleet}} fired lighter projectiles compared to most ship grade MACs, but these rounds worked much like [[shredder round]]s. Each charge was able to fire 3 rounds,{{Ref/Reuse|FoRC29}} thanks to the addition of prototype power capacitors and rapid-cycling MAC coils.{{Ref/Reuse|Enc22}}

*Thirty-two M58 Archer missile pods.{{Ref/Reuse|Warfleet}}

*Four [[Shiva-class nuclear missile]]s, equipped with thirty-megaton HAVOK warheads. One was loaded onto a remote-controlled Longsword interceptor, while the other three were ship-launched.<ref>'''Halo: The Fall of Reach''', Chapter 29, page 275 (''"In response to [[Captain Keyes]]' question about the small single ships in the launch bay, [[Lieutenant]] [[Aki Hikowa|Hikowa]] states, "Yes Sir. One of the Longswords is equipped with a [[Shiva-class nuclear missile]]; it can be remote piloted. We also have three HAVOC Warheads on board"'').</ref>

*Eighteen M910 point defense guns with overlapping fields of fire for point defense against single ships. These benefitted from a new software updated added as part of the refit.{{Ref/Reuse|Enc22}} Few of the guns were mounted on the bottom-fore section, as transient magnetic bursts from the MAC tended to magnetize the guns.{{Ref/Reuse|FoRC29}} Two of these cannons were later salvaged by the surviving UNSC personnel for [[Alpha Base (Installation 04)|Alpha Base]].{{Ref/Reuse|Warfleet}}

*Eight [[Spitfire naval coilgun battery#Mark 33 Spitfire|Mark 33 Spitfire naval coilgun batteries]].{{Ref/Reuse|Warfleet}}

*Six [[M66 Sentry autocannon]] turrets.{{Ref/Reuse|Warfleet}}

''Pillar of Autumn''{{'}}s engine room was a large, three-deck high chamber allowing access to the fusion engine core. Side passages allowed for movement from the bottom deck all the way up to the catwalks on the third. The manifolds into the cores were suspended above the second deck. Controls on the third retracted these manifolds, exposing a vent that led directly into the core. It was using this method to expose the core via the vents that the John-117 ultimately destroyed the ship and Installation 04. This room is the largest room in ''Pillar of Autumn'' with the exception of the hangar bay and the "leap of faith" room.

[[File:HR Autumn Longsword.png|thumb|250px|A Longsword flanking the drydocked ''Autumn''.]]

The ''Pillar of Autumn'' had a complement of eight hundred Marines and four hundred ODSTs, totaling 1,200 fighting personnel.{{Ref/Reuse|Warfleet}} The ship's Marine complement were divided into the following units;

*[[79th Infantry Battalion]]<ref>''Halo: The Flood'', [[Halo: The Flood#2010 bonus content|Adjunct]], [[Entry 47-2396/10763]]</ref>

*[[5th Platoon]]<ref name="CEPOA">''Halo: Combat Evolved'', campaign level, ''[[The Pillar of Autumn (Halo: Combat Evolved level)|The Pillar of Autumn]]''</ref>

*[[14th Platoon]]{{Ref/Reuse|CEPOA}}

*[[22nd Tactical]]{{Ref/Reuse|CEPOA}}

*[[Second squad (Pillar of Autumn)|2nd squad]]{{Ref/Reuse|flood6}}

*[[Fire Team Charlie]]{{Ref/Reuse|flood6}}

*[[Fireteam Zulu]]

 

 

The ship's 400 ODSTs were divided under the following units;{{Ref/Note|In Chapter 2 of ''Halo: The Flood'', Silva sends B and C companies away for various tasks, commenting that his camp only has half of its strength left at 200 personnel This means each company has roughly 100 personnel. Later statistics given on ODST [[combat team]] organisation place ODST company sizes at 60-112 personnel, in keeping with this information.}}

 

**[[A Company (Pillar of Autumn)|A Company]]{{Ref/Reuse|flood2}}

**[[B Company (Pillar of Autumn)|B Company]] - Commanded by First Lieutenant Melissa McKay<ref name="flood2">''Halo: The Flood'', Chapter 2</ref>

***[[1st Platoon (Pillar of Autumn)|1st Platoon]] - Commanded by Second Lieutenant [[Oros]]<ref name="flood5">''Halo: The Flood'', Chapter 5</ref>

****[[3rd Squad]]<ref>''Halo: The Flood'', Chapter 9</ref>

***[[2nd Platoon (Pillar of Autumn)|2nd Platoon]] - Commanded by Second Lieutenant [[Dalu]] (later replaced by Company Master Sergeant [[Lister (Marine)|Lister]] during the [[Raid on the Pillar of Autumn]])<ref name="flood6">''Halo: The Flood'', Chapter 6</ref>

***[[3rd Platoon (Pillar of Autumn)|3rd Platoon]] - Commanded by First Lieutenant Melissa McKay{{Ref/Reuse|flood6}}

 

*[[Combat Team Victor]]{{Ref/Reuse|CEPOA}}

*[[Combat Team X-Ray]]{{Ref/Reuse|CEPOA}}

 

Naval Pelican dropship pilots were assigned to the ''Pillar of Autumn'' from the [[23rd Naval Air Squadron]].

*[[Jacob Keyes|Captain Jacob Keyes]] — ''Commanding officer'' (August - September 2552)

===Production notes===

[[File:Bulletin board compare.jpg|thumb|200px|The Bulletin Board on the ''Autumn's'' bridge in both ''[[Halo Combat Evolved]]'' and ''[[Halo: Combat Evolved Anniversary|Anniversary]]''.]]

*In ''[[Halo: The Fall of Reach]]'', the description of ''Pillar of Autumn'' is considerably different from its ''Halo: Combat Evolved'' incarnation. The bridge is described as having a command chair and a curved viewport; in ''Halo: Combat Evolved'', this chair is absent and the window consists of several flat sections. The novel also describes the bridge as being extremely cramped, with only a meter of space between the command chair and the other stations,<ref name="for277">'''Halo: The Fall of Reach''', ''page 277''</ref> while in the game, the bridge is clearly more spacious. According to the novel, there is also an elevator leading directly from the engine room to the bridge.{{Ref/Reuse|for277}} In the game, the engineering and the bridge are on the same level, and there are no doors which may belong to an elevator adjoining the bridge. In addition, the engine room is described as being "hexagonal", while in the game,{{Ref/Reuse|FoRC29}} it consists of two vaguely rectangular chambers with the engine core in the middle. The ship is also described as having rotating centrifuges to generate [[artificial gravity]];{{Ref/Reuse|FoRC29}} no rotating sections are present in the game, unless they are located within the hull.

*''Pillar of Autumn''{{'}}s was approximately 1.17&nbsp;km long, a reference to John-117.<ref>[http://nikon.bungie.org/misc/sloftus_poaconundrum '''halo.bungie.org''': ''The Pillar of Autumn Conundrum'']</ref> The ship's length is exaggerated in the final level of ''Halo: Combat Evolved'' to a length of three kilometers, likely to add urgency and suspense to the escape sequence.

File:HCE-PillarOfAutumn-Angle.png|Another view of the ''Autumn'' near Installation 04.

File:POA-Full-Int-Ext.jpg|The outline of ''Halo Combat Evolved''{{'}}s [[The Maw]] level.   

File:HaloCE-Maw-PoA-Critical.png|''Pillar of Autumn''{{'}}s fusion reactors go critical.   

File:PoA logo.png|''Pillar of Autumn''{{'}}s [[ship emblem]] as seen in ''Halo: Combat Evolved''. In ''Halo: Reach'', the emblem was replaced by the Seventh Column logo.

File:HR_Autumn_Launch_Concept.jpg|Concept art of the ''Autumn'' taking off from the Asźod drydock in ''Halo: Reach''.

File:HR_PillarofAutumn_Drydock.jpg|''Pillar of Autumn'' dry-docked in Asźod.

File:HR-PillarOfAutumn-HD-Panorama.jpg|The ''Autumn'' sitting in drydock.

File:Reach 3893592 Full.jpg|Hull-classification information on the ''Autumn''{{'}}s outer hull. The Seventh Column symbol is also visible.  

File:HCEA AutumnInterior Concept 1.jpg|Interior concept art for ''Halo: Combat Evolved Anniversary''.

File:HCEA AutumnInterior Concept 2.jpg|Interior concept art for ''Halo: Combat Evolved Anniversary''.

File:HTMCC HCEA Achievement DearDiary.png|Concept art of the crashed ''Pillar of Autumn'' for ''[[Halo: Combat Evolved Anniversary]]''.

File:2817468-gallery.jpg|''Pillar of Autumn''{{'}}s bridge, as seen in ''[[Halo: Combat Evolved Anniversary]]''.

File:HFR Warthog Charge.jpg|The ''Autumn'', grounded on Installation 04 as the UNSC moves in to raid it.

File:HFR PrepareToDrop.jpg|The SOEIV bay on the ''Autumn''.

**''[[Terminal (Halo: Combat Evolved Anniversary)|Terminals]]''

*''[[Halo: Fleet Battles]]''<ref name="orders">[https://www.halowaypoint.com/en-us/news/canon-fodder-taking-orders '''Halo Waypoint''': ''Canon Fodder - Taking Orders'']</ref>

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[[Category:Halcyon-class light cruisers|Pillar of Autumn]]

[[Category:UNSC ships|Pillar of Autumn]]