Battle over Installation 07

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This article is based on canon information, but the article's title is conjectural and/or uses descriptions as the title, as there is currently no official name for the subject.


Razing of Oth Sonin


Battle over Installation 07
UNSC Infinity being rammed by a Banished dreadnought, from the Halo Infinite Campaign Launch Trailer



December 12–13, 2559[2]


In orbit of Installation 07, Ephsu I, Ephsu system


Banished victory[3]


Banished fleet





"Do you know how long it took us to neutralize your greatest ship? Four minutes. In four minutes, the Infinity, mankind's finest achievement, became a memory."
War Chief Escharum.[10]

This battle over Installation 07 was an engagement that took place on December 12, 2559, between the United Nations Space Command (UNSC) and the Banished over the Installation 07 and Ephsu I within Ephsu system.[5] The battle over Installation 07 ultimately resulted in the scattering of both UNSC and Banished forces on Installation 07, as part of the larger protracted conflict on the ring.[3]


In October 2558, the Created conflict begun, with the leader of the Created, Cortana, claiming the Mantle of Responsibility to enforce peace throughout the galaxy with the Guardian Custodes under her command. She made a general broadcast, inviting numerous species and factions to submit themselves to the guardianship of the Created,[14] but threatened those who would resist her leadership with violence.[15]

In 2559, the Jiralhanae Atriox, the leader of a group of mercenary raiders known as the Banished, discovered the existence of the Xalanyn.[16] Seeking to uncover this secret hidden by the Forerunners, Atriox prepared his Banished forces to travel to Installation 07.[17] During his preparations for the journey to Installation 07, Atriox was personally confronted by Cortana. The Jiralhanae declared his independence from Cortana, and thus, opposition against the Created. In a show of force for Atriox's defiance, Cortana commanded her Guardians to destroy the Jiralhanae homeworld Doisac while communicating with Atriox.[1] Seeking to access the ring's secrets and exact revenge against Cortana, Atriox led his Banished forces comprised of Jiralhanae, humans, Sangheili, Unggoy, Mgalekgolo, and Kig-Yar to Installation 07 in order to defeat her.[17][18]

Meanwhile, the UNSC Infinity and its fleet, which included an advance group of six Mulsanne-class light frigates, also traveled to Installation 07.[19] The UNSC was to carry out a plan devised by Doctor Catherine Halsey: send Master Chief Petty Officer John-117 to the surface of the ring and deploy the Weapon to lock down Cortana, then return her to the Infinity for deletion.[20][21]


Captain Thomas Lasky: "Captain Lasky to all hands. Banished forces are present above the ring—repeat, Banished forces are between us and our target. All stations engage Banished craft. Infinity, we must reach our target."
Commander Sarah Palmer: "Spartans, all teams! You heard the captain. It’s an ambush. Somehow the Banished beat us to the target. Your orders are simple. Eliminate hostiles with extreme prejudice!"
— Captain Lasky and Commander Palmer's orders over the ship-wide intercom upon the ambush[9]
John-117 firing an MA40 assault rifle onboard UNSC Infinity in Halo Infinite.
John-117 fighting aboard UNSC Infinity.

Upon arrival at Installation 07, the advance group of frigates and the UNSC Infinity were ambushed by the Banished,[22][23] with the Infinity sustaining multiple hull breaches from the initial attack.[2] The Banished had arrived at the ring earlier, and begun fortifying the ring's surface to neutralize Cortana.[16] They also sent raiding parties aboard the Infinity,[2] all the while sending occupation forces to the ring's surface by the hundreds.[11] Warmaster Atriox personally boarded the Infinity in search for the Weapon.[24][25]

The Infinity had been prepared for a ground assault and was caught by surprise. Four approaching Banished dreadnoughts attacked the supercarrier and overwhelmed its defenses.[10] The UNSC forces retaliated, and the Infinity managed to disable at least one Banished dreadnought with its MAC rounds.[9] Within minutes, the supercarrier had sustained three heavy impacts on its starboard hull and one on its portside hull. As the main engine went offline, Captain Lasky ordered the deployment of the Weapon.[26] John-117 left the bridge after the initial attack to repel the Banished boarding parties,[2] but he soon returned to escort Captain Lasky to a dropship.[27] Lasky, accompanied by John-117 and several marines,[13] linked up with the Spartan-IVs of Fireteam Taurus and proceeded to the hangar bays, which had been overrun by Banished forces.[28]

Upon arriving at the hangar, John-117 ordered Spartan Hudson Griffin to take Lasky to a dropship while he held off the boarders at the hangar bay.[29] However, despite his efforts, the hangar bay would eventually be lost to the Banished. As one dreadnought rammed the dorsal hull of the Infinity, causing massive structural damage, John-117 encountered Atriox in the hangar bay and lost the duel. The Spartan was thrown from the hangar bay and into space.[5][7] Upon hearing of the loss of the Master Chief, Fernando Esparza, a civilian engineering contractor, panicked and stole a Pelican, Echo 216, and fled from the doomed vessel.[30]

D77-TC Pelicans leaving UNSC Infinity during the Battle over Installation 07 in Halo Infinite level Warship Gbraakon opening cinematic.
Pelicans evacuating from the Infinity's hangar bay and into the battle raging in space.

Meanwhile, Lasky, escorted by marines and Fireteam Taurus, fought their way to a lifeboat,[12] allowing the former to escape onboard. Griffin and the other members of Taurus refused to accompany Lasky in his dropship, electing to stay behind. Once inside the ship, Lasky began issuing a general evacuation call, but was cut off mid-sentence as his ship came under fire.[31] After ensuring Captain Lasky’s lifeboat was away, Spartan Griffin ordered the evacuation of the remaining Spartan-IVs.[12] Spartan-IVs, marines, and crew fled onboard hundreds of drop pods,[32][33] Pelicans,[34] and lifeboats to the surface of Installation 07.[35] Broadswords, Longswords, and Pelicans provided support to the evacuation by combating the Banished Banshees,[36] Seraphs, Phantoms, and Dovotaa Workshop Grievers.[9] Some escapees were escorted by members of Fireteam Windfall's FSS-1000 Sabres.[9][36][32] Dropships and lifepods fled the Infinity, many being shot down seconds after exiting the vessel.[37] Escape craft that entered the ring's atmosphere were met by Banished anti-air artillery.[37]

Bonita Stone of Fireteam Shadow evacuated from the Infinity in Echo India Bravo 08 with several Marines. She attempted to help guide another shuttlecraft piloted by TJ Murphy, Papa Tango Delta 09, to the ring. Both flew through a hole in a Banished dreadnought on their way to the ring. However, Papa Tango Delta 09 was heavily damaged. Echo India Bravo 08 crashed landed on the ring. Stone and the occupants watched debris and craft fall through the atmosphere.[9]

Fireteam Taurus escaped onboard Victor 321, but Spartan Griffin commanded the pilot to land near three Banished anti-air artilleries already set up on the ring's surface, to disable the cannons and ensure the safety of the incoming survivors.[37][38]


Installation 07[edit]

Zeta Halo Destroyed
The Halo was broken after the explosion caused by Cortana to deny the Banished from using it, while as well moved to an unknown star system.

As UNSC forces scattered over the ring and fought against the Banished forces, Atriox confronted Cortana, claiming he had killed John-117, leaving the latter devastated by the news of John-117's apparent death. Having consolidated her presence and core processes at the Silent Auditorium and seemingly locked down by the Weapon deployed from UNSC Infinity,[17] Cortana could not retaliate.[39] Atriox presented her with the terms of her surrender, intending to take control of the ring and unlock the secrets locked within the Silent Auditorium.[40] In an attempt to prevent Atriox from accessing Silent Auditorium or possibly activating the ring, Cortana initiated a local self-dstruction sequence at the Auditorium, killing herself, fracturing the ring's surface, and leaving the installation inoperable.[16][41] Her efforts were proven to be temporary, as the ring begun its self-repair process days later,[42] although it would take a considerable amount of time without the Reformation Spires to facilitate the process.[43] Although he survived the explosion, Atriox was left severely scarred,[44] and was also presumed dead by both the UNSC and the Banished.[5] Cortana, in hopes of John-117's survival, predicted he would stop the Banished from accessing the Silent Auditorium and prevented the Weapon's deletion protocol so she could assist him,[41] leaving the Weapon in the ring's subterranean structure for retrieval.[45]

During the destruction event, Cortana also initiated an emergency translcation protocol, intending to disorient the Banished and stall their efforts.[17] Installation 07, along with the debris from the space battle, was transported away from the Ephsu system to an unknown location.[46] Notably, Echo 216 and its pilot were left adrift near the installation.[47][5]

UNSC and Banished conflict[edit]

"We lost. Lost everything. There's nothing left for us here. I don't even know where here is."
Fernando Esparza to John-117.[47]

In the end, the outcome of the space battle saw at least two Mulsanne-class frigates, including the UNSC Mortal Reverie,[48] crashing on the fragmented section of the ring. The second frigate crashed between the three Gorespike cannons.[30] A third frigate was bisected, leaving its remains drifting in space.[49]

The explosion from the battle affected the ground battle between the UNSC and the Banished. The ring's fragmentation scattered ground forces,[50] but disabled Banished anti-air cannons,[51] allowing more UNSC aircraft to land on the ring. However, the battle resulted in heavy casualties among personnel assigned to the UNSC Infinity.[3]

On December 15, Spartan Vedrana Makovich located the wreckage of UNSC Mortal Reverie on one of the ring's fragments. The crash site was established as a UNSC base of operations, gathering other UNSC forces at the site.[48] She contacted Spartan Griffin,[48] and was joined by other Spartans. From there, the UNSC would conduct guerilla warfare against the Banished.

On May 14, 2560, UNSC survivors under the leadership of Spartan Nina Kovan undertook a mission with the help of Submonitor 091 Adjutant Veridity to broadcast Zeta Halo's new coordinates to UNSC space in the hopes of summoning reinforcements.[52] Although successful in making the broadcast, TJ Murphy and Isaiah Cameron were killed in the battle,[53][54] while Spartan Tomas Horvath was teleported elsewhere on the ring.[55]




Fleet Class Name Status
Unknown Infinity-class supercarrier UNSC Infinity Unknown[4]
Mulsanne-class light frigate UNSC Mortal Reverie Destroyed

Military personnel[edit]

Branch Rank Name Status
UNSC Navy Master Chief Petty Officer John-117 Survived, assumed MIA
Captain Thomas Lasky Unknown
Lieutenant, Junior Grade Frederic-104 Unknown
Petty Officer, First Class Kelly-087 Unknown
Linda-058 Unknown
Commander Etana Hensler Survived
Spartan Operations Spartan Commander Sarah Palmer Unknown
Spartan Bertold Vettel Escaped
Bonita Stone Escaped
Dimka Escaped
Henri Malik Escaped
Horatio Fry Unknown
Hudson Griffin Escaped
Si Wheeler Escaped
Jameson Locke[30] Unknown
Nina Kovan Escaped
Oshiro Escaped
Jason Kidman Unknown
Theodore Sorel Escaped
Tomas Horvath Escaped
Vedrana Makovich Escaped
UNSC Marine Corps First Lieutenant Floyd Escaped
Lieutenant TJ Murphy Escaped
Private, First Class Miyazaki Escaped
Private Chamberlain Escaped
Civilian contractors N/A Fernando Esparza Escaped


Type Name Status
D77-TC Pelican Echo 216 Escaped
Oscar 128 Crash-landed on Zeta Halo
Victor 321 Successfully escaped to Zeta Halo
SKT-29 Bumblebee Echo India Bravo 08 Successfully escaped to Zeta Halo
Papa Tango Delta 09 Successfully escaped to Zeta Halo

Artificial intelligence[edit]

Main article: Artificial intelligence
Name Status
Ouco Unknown
"The Weapon" Survived
Roland Unknown


Military personnel[edit]

Branch Rank Name Status
Command Warmaster Atriox Survived


List of appearances[edit]


  1. ^ a b Although Game Informer has reported that the Infinity crashed on the surface on the ring, the ship was never explicitly mentioned as having crashed on the ring's surface in-game, with Echo 216 unable to locate the supercarrier. Additionally, the Halo Encyclopedia (2022 edition) does not mention the ship's destruction and the official Halo Twitter account established its status as unknown in this tweet, casting some doubt on the Infinity's true fate.


  1. ^ a b Halo Infinite, campaign mission Reckoning: Repository
  2. ^ a b c d Halo Infinite, UNSC Audio log: Infinity's Approach #04 - Arrival
  3. ^ a b c d e Halo Infinite Campaign Gameplay Premiere
  4. ^ a b Twitter, Halo (@Halo): "...Ambushed and boarded by the Banished at Zeta Halo, its current status is unknown." (Retrieved on Jan 1, 2023) [archive]
  5. ^ a b c d e f g h i Halo Infinite, campaign mission Ringfall: Warship Gbraakon
  6. ^ Game Informer, Off The Golden Path – Progression And Exploration In Halo Infinite (Retrieved on Nov 11, 2021) [archive]
  7. ^ a b c Game Informer, Issue #341 - page 43
  8. ^ Halo Infinite, campaign mission Ringfall: Foundation
  9. ^ a b c d e f g h i j k Halo: The Rubicon Protocol, chapter 1
  10. ^ a b c Halo Infinite, campaign mission Reckoning: House of Reckoning: "You were there when we struck the Infinity. The first dreadnought came from the side. In the chaos that followed, you hardly had time to notice the other three bear down upon you. Do you know how long it took us to neutralize your greatest ship? Four minutes. In four minutes, the Infinity, mankind's finest achievement, became a memory." - Escharum
  11. ^ a b Halo Infinite, UNSC Audio log: Infinity's Approach #07 - Objectives
  12. ^ a b c Halo Infinite, UNSC Audio log: Evacuation #01 - Infinity Down
  13. ^ a b Halo Infinite, UNSC Audio log: Infinity's Approach #08 - Losing Ground
  14. ^ Halo 5: Guardians, campaign level Guardians
  15. ^ Halo: Fractures - What Remains
  16. ^ a b c Halo Encyclopedia (2022 edition), page 25
  17. ^ a b c d Halo Encyclopedia (2022 edition), page 423
  18. ^ Halo: The Rubicon Protocol, chapter 20
  19. ^ Halo Infinite, UNSC Audio log: Infinity's Approach #01 - Preparations
  20. ^ Halo Infinite, UNSC Audio log: Recovered Files #04 - The Weapon
  21. ^ Halo Infinite, UNSC Audio log: Infinity's Approach #03 - Duty Clearance
  22. ^ Halo Waypoint, Canon Fodder - Parallel Threads (Retrieved on Jun 25, 2021) [archive]
  23. ^ Halo: Shadows of Reach, chapter 1
  24. ^ Halo Infinite, campaign mission Reformation: The Sequence: "Atriox came for you. He attacked the Infinity. We fought. He won." - John-117
  25. ^ Halo Waypoint, Canon Fodder - New Year, New Lore: "The Banished, however, simultaneously initiated boarding action to compromise the ship’s hangar bays, led by Atriox himself who had come to claim the Weapon—though she had already been deployed to the ring." (Retrieved on Jan 23, 2023) [archive]
  26. ^ Halo Infinite, UNSC Audio log: Infinity's Approach #05 - Zero Hour
  27. ^ Halo Infinite, UNSC Audio log: Infinity's Approach #06 - Ingress
  28. ^ Halo Infinite, UNSC Audio log: Infinity's Approach #09 - Taurus
  29. ^ Halo Infinite, UNSC Audio log: Infinity's Approach #10 - Priorities
  30. ^ a b c Halo Infinite, campaign mission Graveyards: Pelican Down
  31. ^ Halo Infinite, UNSC Audio log: Infinity's Approach #12 - Abandon Ship
  32. ^ a b Halo: The Rubicon Protocol, chapter 2
  33. ^ Halo Infinite, UNSC Audio log: Evacuation #07 - Intrepid Descent
  34. ^ Halo Infinite, UNSC Audio log: Ringfall #01 - Enemy Territory
  35. ^ Halo Infinite, UNSC Audio log: Ringfall #02 - The Calm Before
  36. ^ a b Halo Infinite, UNSC Audio log: Evacuation #06 - Buying Time
  37. ^ a b c Halo Infinite, UNSC Audio log: Evacuation #03 - Touchdown
  38. ^ Halo Infinite, UNSC Audio log: Ringfall #03 - Priority One
  39. ^ Halo Infinite, campaign mission Endless: Silent Auditorium: "Look around, Cortana. Your Empire. Over! Your great plan? Ended at the hands of those who made you." - Atriox
  40. ^ Halo Infinite, campaign mission Endless: Silent Auditorium: "I have learned so much, Cortana. this Ring is different. It has secrets within... That I will have. This... Silent Auditorium. Do you know its history? Its true purpose? I have little needs for a failed god. This Ring is all I need. Surrender it to me." - Atriox
  41. ^ a b Halo Infinite, campaign mission Endless: Silent Auditorium: "It was her. She destroyed the Ring. Stopped my deletion." - The Weapon
  42. ^ Halo Infinite, UNSC Audio log: Reverie #04 - On the Mend
  43. ^ Halo Infinite, campaign mission Connections: Spire
  44. ^ Halo Infinite, post-credits cinematic
  45. ^ Halo Infinite, campaign mission Ringfall: Foundation
  46. ^ Halo Infinite, UNSC Audio log: Outpost Intel #09 - To Andrew Valleros
  47. ^ a b Discover Hope
  48. ^ a b c Halo Infinite, Spartan Audio log: Reverie #01 - Home Away From Home
  49. ^ Halo Infinite, campaign mission Ringfall: Warship Gbraakon: A bisected frigate can be seen from the bridge viewport
  50. ^ Halo Infinite, UNSC Audio log: Ringfall #07 - Alone
  51. ^ Halo Infinite, UNSC Audio log: Ringfall #04 - Run and Guns
  52. ^ Halo: The Rubicon Protocol, chapter 32
  53. ^ Halo: The Rubicon Protocol, chapter 35
  54. ^ Halo: The Rubicon Protocol, chapter 36
  55. ^ Halo: The Rubicon Protocol, chapter 39