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{{Status|Canon}}
An '''Operation''' is a planned military offensive conducted by [[UNSC]] forces, generally against a specific enemy objective or group of objectives. Operations can be large scale battles or small, covert insertions. Operations receive unique code words to distinguish themselves from other actions without giving away sensitive information should discussion of them be intercepted by enemy forces.
{{Center|'''Operation''' redirects here. For the periodic updates to [[Halo Infinite]], see [[Event]].}}
An '''operation''' is a planned military offensive conducted by a military force, generally against a specific enemy objective or group of objectives. Operations can be large scale military campaigns, [[battle]]s or small, covert insertions. Operations receive unique code words to distinguish themselves from other actions without giving away sensitive information that could be intercepted by enemy forces.


==Known UNSC Operations==
==Known Operations==
*'''[[Operation: HYPODERMIC]]''' (dates unknown), a mysterious and secret [[ONI]] project that has been in progress since at least [[2531]].
{| class="wikitable sortable " style="width: 100%;" cellspacing="1" cellpadding="1" border="0"
|-
!scope="col"|Operation
!scope="col"|Date
!scope="col"|Description
|-
|'''[[Operation: ABLE SENTRY]]'''
|
|A force reconnaissance operation, [[Edward Buck]] participated in to prepare for [[Operation: PHALANX]] on [[Circinius IV]].
|-
|'''[[Operation: ACADEMIC]]'''
|February 10, [[2558]]
|[[Fireteam Majestic]] was ordered to advance on [[Covenant]] cultists on a location on [[Requiem]].{{Ref/Game|Id=briefing|H4|Halo 4 Limited Edition|Limited Edition|Detail=[[Infinity Briefing Packet#Mission briefings|Infinity Briefing Packet - Mission Briefing (variable between owners)]]}}
|-
|'''[[Operation: ALL-SEEING EYE]]'''
|February 8, 2558
|An operation that saw Fireteam Majestic recon for a location for a possible base establishment on Requiem.{{Ref/Reuse|briefing}}
|-
|'''[[Operation: ANCHORITE]]'''
|October 2558
|An operation undertaken by [[Fireteam Osiris]] to rescue [[Catherine Halsey]] from [[Jul 'Mdama's Covenant|Covenant]] custody on [[Kamchatka]] during the [[Battle of Kamchatka]].
|-
|'''[[Operation: ASTUTE TIGER]]'''
|
|An operation Edward Buck participated in on [[Harvest]] which consisted of deploying ADM's to predicted Covenant landing zones prior to [[UNSC]] evacuation.
|-
|'''[[Operation: ATHENA]]'''
|2558
|Operation launched to discover the location of the [[Absolute Record]].
|-
|'''[[Operation: ATLAS VIGILANCE]]'''
|2558
|An aborted [[ONI]] mission undertaken by [[Spartan-IV|Spartan]] [[Vale]] that involved securing [[Shipmaster]] [[Ori 'Sumai]] at [[Salia III]].
|-
|'''[[Operation: BIRD IN HAND]]'''
|October 23, 2558
|A recovery operation undertaken by Spartan-II [[Blue Team]] in order to secure ONI research station ''[[Argent Moon]]''.
|-
|'''[[Operation: BLEACH]]'''
|February 2558
|An ONI mission related to [[Mission to Alpha Shard]], involving [[Codename: FIXER]] recovering information regarding it.
|-
|'''[[Operation: BLIND FAITH]]'''
|[[2552]]
|A combined UNSC and [[Sangheili]] battlegroup follow the [[Prophet of Truth]] to [[Installation 00]], locating and assassinating the leader of the Covenant.
|-
|'''[[Operation: BLOWBACK]]'''
|2552
|Aborted [[Spartan-II]] [[Black Team]] covert operation to gather intelligence and destroy Covenant ships in [[Sub-sector 35]].
|-
|'''[[Operation: BLUE MOON]]'''
|Prior to [[2530]]
|The operation involved the sweeping and clearing of a [[URF]] base on [[Eridanus II]] by an [[ODST]] team. Spartan-II [[Linda-058]] provided cover fire for the team.
|-
|'''[[Operation: BRAVADO]]'''
|2552
|An operation of involving [[Vice Admiral]] [[Michael Stanforth]].
|-
|'''[[Operation: BREADCRUMB]]'''
|
|A mission in which Captain [[James Cutter]] was involved at some point.
|-
|'''[[Operation: BREAKER TRIP]]'''
|[[2559]]
|An operation conducted by the UNSC during the [[Created conflict]].
|-
|'''[[Operation: BRONZE COBRA]]'''
|Between [[2553]] and [[2557]]
|An operation on [[Venezia]] undertaken by Spartan-II Linda-058.
|-
|'''[[Operation: BUMRUSH]]'''
|October 20, 2552
|An ODST mission during the [[Battle of Mombasa]] in which they had to infiltrate the {{Class|CAS|assault carrier}} ''[[Solemn Penance]]'' and force the ship down.
|-
|'''[[Operation: BUZZHAWK]]'''
|September 2558
|A [[Surakan Militia Volunteers|Surakan Militia]] сounter-operation against [[Jiralhanae]] invaders on the planet [[Carrow]] designed to destroy their [[flagship]], the {{Pattern|Varric|heavy cruiser}} ''[[Foebane]]''.
|-
|'''[[Operation: CARRION HEART]]'''
|2553
|A UNSC operation details of which have been redacted by the ONI, though [[Frederic-104]] participated in it.
|-
|'''[[Operation: CARTWHEEL]]'''
|2540's
|A [[SPARTAN-III]] [[Beta Company]] mission.
|-
|'''[[Operation: CHARLEMAGNE]]'''
|[[2496]]
|The deployment of a company of [[ORION Project]] operatives against [[Insurrectionist]]s over Eridanus II.
|-
|'''[[Operation: CHATTERBOX]]'''
|February 9, 2558
|An operation in which [[Fireteam Crimson]] and Fireteam Majestic were tasked to remove Covenant cultists in certain locations on Requiem, with Majestic focusing on a communications array.{{Ref/Reuse|briefing}}
|-
|'''[[Operation: CIRRUS]]'''
|2552
|An operation in which Blue Team was tasked to rescue key military personnel from the [[Forerunner]] world of [[Onyx]].
|-
|'''[[Operation: CLEAN SWEEP]]'''
|
|An operation during the [[Insurrection]].
|-
|'''[[Operation: COALPEPPER]]'''
|[[2555]]
|A Spartan-IV operation to recover the [[Huragok]] [[Quick to Adjust]] from United Rebel Front-controlled [[Talitsa]].
|-
|'''[[Operation: COUGAR REDEMPTION]]'''
|Prior to 2557
|UNSC operation undertaken by [[Kelly-087]].
|-
|'''[[Operation: DAWN ECLIPSE]]'''
|Prior to 2558
|A mission during which Spartan [[Locke]] served as security for an ONI xenoarchaeological survey team at a redacted location.
|-
|'''[[Operation: DAYBREAK]]'''
|
|Highly classified military exercises conducted by the [[UNSC Navy]] on [[Oban]].
|-
|'''[[Operation: DELHI]]'''
|Prior to 2558
|A denial of material mission against insurrectionist forces on [[Hat Yai]], during which Spartan Locke succeeded in destroying twenty-one special technical assets.
|-
|'''[[Operation: DEVIL FREEDOM]]'''
|Prior to August 2552
|Operation involving Kelly-087, who assisted the evacuation of civilians and targeting of Covenant landing craft for orbital bombardment on [[Imber]]
|-
|'''[[Operation: ECDYSIS]]'''
|Prior to 2560
|A mission part of the [[Zeta Halo project]] undertaken at [[ONI Ilex Facility]].
|-
|'''[[Operation: EASTERN AZURE]]'''
|Prior to 2558
|A surveillance mission at [[Arcadia]] undertaken by Spartan Locke.
|-
|'''[[Battle of Jericho VII|Operation: FALLEN WALLS]]'''
|2532
|UNSC defense of Jericho VII
|-
|'''[[Operation: FAR STORM]]'''
|2555
|Joint UNSC-[[Swords of Sanghelios]] mission to Installation 00.
|-
|'''[[Battle of Ariel|Operation: FIRESIDE]]'''
|2552
|An ODST mission on [[Ariel]].
|-
|'''[[Operation: FIRST STRIKE]]'''
|2552
|A small SPARTAN-II offensive against the Covenant battle station ''[[Unyielding Hierophant]]''.
|-
|'''[[Operation: FLINT DEVIL]]'''
|Prior to 2557
|An operation undertaken by Kelly-087 during which she was deployed to [[Installation 03]] to provide security for a research facility on the ring.
|-
|'''[[Operation: FOCUS LENS 2555]]'''
|2555
|A joint-service exercise on [[Mars]] simulating a second invasion of the [[Sol system]] by the Covenant undertaken by [[Holly Tanaka]].
|-
|'''[[Operation: GREY VEIL]]'''
|[[2544]]
|An assassination mission on the planet [[Heian]] undertaken by an ODST squad accompanied by Spartan-II [[Cal-141]].
|-
|'''[[Operation: GUARDIAN LANCE]]'''
|[[2540]]
|The recovery of Covenant technology by the UNSC on [[Jericho VII]].
|-
|'''[[Operation: HEMORRHAGE]]'''
|Prior to August 2552
|Operation involving Kelly-087.
|-
|'''[[Operation: HERODUCK]]'''
|
|A mission in which Spartan-IVs conducted field tests of [[BARVO-class Mjolnir]] helmet.
|-
|'''[[Operation: HORIZON]]'''
|Prior to 2544
|An operation undertaken by [[John-117]] with mission target to destroy Covenant exploratory fleet elements near [[Cascade]].
|-
|'''[[Operation: HORN AND HIDE]]'''
|Prior to August 2552
|Successful assassination of a [[San'Shyuum]] missionary on [[Odenli'sh]] by Linda-058.
|-
|'''[[Operation: HWACHA]]'''
|2537
|Counter-boarding operation against Covenant fleet elements in the [[Bonanza asteroid belt]].
|-
|'''[[Operation: HYPODERMIC]]'''
|dates unknown
|A mysterious and secret ONI project that has been in progress since [[2531]].
|-
|'''[[Operation: ICE DANCE]]'''
|March 18, 2526
|An engagement between the UNSC forces and the Insurrectionists on [[Seoba]].
|-
|'''[[Operation: INSTINCT]]'''
|2553
|An operation during which Fred-104 rescued [[UEG]] diplomatic personnel and eliminated insurrectionist forces on the human colony of [[Andesia]].
|-
|'''[[Operation: IRON FIST]]'''
|Mid 2540s
|An operation undertaken by John-117 during which he was deployed to [[Miridem]] with the duel goals of asset denial and partial recovery of critical cyberinfrastructure assets.
|-
|'''[[Operation: IRON GREAVE]]'''
|Early 2537
|An engagement between the UNSC and the Covenant on [[New Constantinople]].
|-
|'''[[Operation: JOINT MONITOR]]'''
|After November 2552
|Biohazard containment operation following the [[Battle of Voi]] in which [[Alpha-Nine]] participated.
|-
|'''[[Operation: JOVIAN WHISTLE]]'''
|May 2553
|Operation conducted by the UNSC on the human colony of [[Gao]] in order to retrieve Forerunner technology on the planet.
|-
|'''[[Operation: KALEIDOSCOPE]]'''
|[[2502]]
|The assassination of [[rebel]] political leader, [[Jerald Mulkey Ander]], on Harvest.
|-
|'''[[Operation: KICKSTAND]]'''
|2559
|An operation conducted by the UNSC during the Created conflict.
|-
|'''[[Operation: KINETIC STORM]]'''
|During or after 2553
|A series of reconnaissance and strike operations in an unknown [[Joint Occupation Zone]] in which Edward Buck participated.
|-
|'''[[Operation: LAND GRAB]]'''
|February 7, 2558
|An mission which saw the initial assault and neutralization of Covenant positions inside Requiem.{{Ref/Reuse|briefing}}
|-
|'''[[Operation: LEFT JAB]]'''
|August 14, 2552
|UNSC Naval operation in support of [[Operation: UPPER CUT]] during the [[Fall of Reach]].
|-
|'''[[Operation: MAD HATTER]]'''
|Prior to 2558
|A mission during which Spartan Locke was a part of a counter-mobility strike in a redacted location on [[Jiralhanae]]-controlled "forgeship" ''[[Boundless Artifice]]''.
|-
|'''[[Operation: MARSH FLASH]]'''
|December 3, 2552
|An operation against clusters of Jiralhanae leadership attempting to activate an artifact in [[United Republic of North America|Arizona]], directed by Fleet Admiral [[Joseph Harper]]. One of the final battles in the [[Human-Covenant War]] and the final battle in the [[Battle for Earth]].
|-
|'''[[Operation: OCEAN BREAKER]]'''
|July 2552
|Spartan-II's deployment on [[Sigma Octanus IV]].
|-
|'''[[Operation: OCEAN RAPTOR]]'''
|Prior to 2558
|A UNSC operation that took place at a location redacted by the ONI. It was undertaken by [[Fireteam Stingray]] under command of Spartan Olympia Vale.
|-
|'''[[Operation: OCTAGON]]'''
|Prior to 2553
|An operation undertaken by Linda-058. Mission details remain highly classified.
|-
|'''[[Operation: PALE SHADOW]]'''
|Prior to [[2537]]
|UNSC operation on [[Eirene]] involving Kelly-087.
|-
|'''[[Operation: PHALANX]]'''
|
|An operation on Circinius IV.
|-
|'''[[Operation: POLECAT]]'''
|
|An operation on a remote world that held a [[Sharquoi]] hive.
|-
|'''[[Operation: PROMETHEUS]]'''
|2537
|The attack on the Covenant shipyard [[K7-49]] by SPARTAN-III [[Alpha Company]].
|-
|'''[[Operation: RED CLOUD]]'''
|
|An ONI operation connected to the [[Skirmish on Mona Lisa|flood outbreak]] aboard the [[prison ship|prison transport]] ''[[Mona Lisa]]''.
|-
|'''[[Operation: RED FLAG]]'''
|2552
|A planned operation to capture a Prophet. Scrubbed by the [[Fall of Reach]].
|-
|'''[[Operation: RED ROOM]]'''
|Prior to [[2530]]
|An operation undertaken by Linda-058. Mission details remain highly classified.
|-
|'''[[Operation: RETRIBUTION]]'''
|December 8–16, 2553
|An operation undertaken to avenge the murder of [[Graselyn Tuwa]] and to rescue her family.
|-
|'''[[Operation: ROCK HOUSE]]'''
|Prior to 2530
|Operation undertaken by Fred-104 in which he neutralized an insurrectionist facility and personnel on [[Eridanus II]].
|-
|'''[[Operation: SENTRY]]'''
|Prior to 2558
|Operation undertaken by Olympia Vale in which she served as an advisor to [[Central Command]] during negotiations between the UNSC and the Covenant fleet over [[Tribute]].
|-
|'''[[Operation: SHELL GAME]]'''
|[[2556]]
|Operation undertaken by [[Fireteam Apollo]] to search for things of interest to ONI within the [[Threshold]] Exclusion Zone.
|-
|'''[[Operation: SILENT STORM]]'''
|[[2526]]
|Operation aimed at buying humanity time to create an effective defense against the Covenant early in the [[Human-Covenant War]] by striking hard and fast at their forces.
|-
|'''[[Operation: SLOW DIVE]]'''
|[[2550]]
|Offensive operation on a Covenant forward outpost
|-
|'''[[Operation: SMOKING ACES]]'''
|May 1, 2531
|Operation undertaken by Blue Team against the United Rebel Front at [[Camp New Hope]] on the colony of [[Victoria]].
|-
|'''[[Operation: SPEARBREAKER]]'''
|[[2559]]
|Operation undertaken by ODST squad [[Sunray 1-1]] during the [[Second Ark Conflict]].
|-
|'''[[Operation: STONEBREAK]]'''
|
|Operation involving at least one [[Orbital Drop Shock Trooper]].
|-
|'''[[Operation: SUNSPEAR]]'''
|September - December 2552
|A secret ONI retaliatory mission against Sangheili naval commanders undertaken by Spartan-II [[Gray Team]], which resulted in the complete destruction of the planet [[Glyke]].
|-
|'''[[Operation: SWITCHBACK]]'''
|Prior to 2544
|An operation undertaken by John-117. Mission details have been redacted.
|-
|'''[[Operation: SWORD 52]]'''
|August 2552
|Support of evacuation operations during the [[Siege of New Alexandria]] in which Alpha-Nine participated.
|-
|'''[[Operation: TALON]]'''
|September [[2525]]
|Operation of the UNSC to capture Colonel [[Robert Watts]] from the URF's [[Eridanus Secundus]] undertaken by Blue Team.
|-
|'''[[Operation: TANGLEWOOD]]'''
|
|A mission in which [[Avery Junior Johnson]] took part as a private.
|-
|'''[[Operation: TENDRIL]]'''
|
|An operation related to the [[SPARTAN-II augmentation procedures]].
|-
|'''[[Operation: THREE-CARD MONTE]]'''
|February 11, 2558
|An search and destroy operation for several Covenant cultist outposts on Requiem.{{Ref/Reuse|briefing}}
|-
|'''[[Operation: THRONE]]'''
|
|Operation involving at least one [[Orbital Drop Shock Trooper]].
|-
|'''[[Operation: TORPEDO]]'''
|[[2545]]
|The attack on Covenant refinery planet [[Pegasi Delta]] by SPARTAN-III Beta Company.
|-
|'''[[Operation: TREBUCHET]]'''
|[[2513]]
|A lengthy UNSC conflict against Insurrectionists.
|-
|'''[[Operation: UPPER CUT]]'''
|August 14, 2552
|The UNSC deployment of the [[FSS-1000 Sabre]] fighters against the Covenant onslaught during the Fall of Reach.
|-
|'''[[Operation: VERITAS]]'''
|[[2496]]
|ORION Project operation which uncovered [[Secessionist Union]] undercover agents occupying high offices within the [[Colonial Military Authority]].
|-
|'''[[Operation: WARM BLANKET]]'''
|2544
|Classified ONI operation to retrieve the captured Dr. [[Catherine Halsey]] from a Covenant fleet following the [[Battle of Miridem]].
|-
|'''[[Operation: WEASLEY]]'''
|
|A mission in which Spartan-IVs conducted field tests of the BARVO-class Mjolnir helmet.
|-
|'''[[Operation: WHISPER AMONG STARS]]'''
|
|An operation in which Captain James Cutter was involved at one point.
|-
|'''[[Operation: WHISTLE STOP]]'''
|May 2558
|A UNSC operation on the surface of [[Ven III]] to recover a [[bioweapon]] from the hands of a Sangheili and numerous [[Kig-Yar]] pirates, slavers, and smugglers.
|-
|'''[[Operation: WHITE GLOVE]]'''
|2552
|The demolition of [[CASTLE Base]] and [[SWORD Base]] to prevent them from capture.
|-
|'''[[Operation: WHITE SAND]]'''
|
|An ONI operation connected to the [[Skirmish on Mona Lisa|flood outbreak]] aboard the [[prison ship|prison transport]] ''[[Mona Lisa]]''.
|-
|'''[[Operation: WHITE VAN]]'''
|2558
|An operation to provide security and oversight to [[Project SENIOR ICE]] on [[Oban]]
|-
|'''[[Operation: WINDOW PANE]]'''
|October 20, 2552
|A mission undertaken by the ODST fireteam [[Alpha-Five]] with the goal of acquiring the Forerunner artifact known as the [[Conduit]] from the Covenant.
|-
|'''[[Operation: WOLFE]]'''
|October 7–12, 2559
|A mission undertaken by Spartan-II Blue Team in order to recover the top-secret assets from the ruins of [[CASTLE Base]] on [[Reach]].
|}


*'''[[Operation: FIRST STRIKE]]''' ([[2552]]), a five [[Spartan-II|Spartan]] offensive against the [[Covenant]] battle station ''[[Unyielding Heirophant]]''.
==Sources==
{{Ref/Sources}}


*'''[[Operation: TREBUCHET]]''' ([[2513]]), a UNSC attack on the [[Eridanus Rebels]].
[[Category:Operations| ]]
 
*'''[[Operation: WHITE GLOVE]]'''  (2552), the demolition of [[CASTLE Base]] to prevent it from capture.
 
*'''[[Operation: KALEIDOSCOPE]]''' ([[2525]]), the assassination of a rebel political leader on [[Harvest]].
 
*'''[[Operation: TORPEDO]]''' ([[2545]]), the attack on Covenant refinery planet [[Pegasi Delta]] by [[SPARTAN-III]] [[Beta Company]].
 
*'''[[Operation: PROMETHEUS]]''' ([[2537]]), the attack on Covenant shipyard [[K7-49]] by SPARTAN-III [[Alpha Company]].
 
 
{{disambig}}

Latest revision as of 06:22, March 8, 2024

Operation redirects here. For the periodic updates to Halo Infinite, see Event.

An operation is a planned military offensive conducted by a military force, generally against a specific enemy objective or group of objectives. Operations can be large scale military campaigns, battles or small, covert insertions. Operations receive unique code words to distinguish themselves from other actions without giving away sensitive information that could be intercepted by enemy forces.

Known Operations[edit]

Operation Date Description
Operation: ABLE SENTRY A force reconnaissance operation, Edward Buck participated in to prepare for Operation: PHALANX on Circinius IV.
Operation: ACADEMIC February 10, 2558 Fireteam Majestic was ordered to advance on Covenant cultists on a location on Requiem.[1]
Operation: ALL-SEEING EYE February 8, 2558 An operation that saw Fireteam Majestic recon for a location for a possible base establishment on Requiem.[1]
Operation: ANCHORITE October 2558 An operation undertaken by Fireteam Osiris to rescue Catherine Halsey from Covenant custody on Kamchatka during the Battle of Kamchatka.
Operation: ASTUTE TIGER An operation Edward Buck participated in on Harvest which consisted of deploying ADM's to predicted Covenant landing zones prior to UNSC evacuation.
Operation: ATHENA 2558 Operation launched to discover the location of the Absolute Record.
Operation: ATLAS VIGILANCE 2558 An aborted ONI mission undertaken by Spartan Vale that involved securing Shipmaster Ori 'Sumai at Salia III.
Operation: BIRD IN HAND October 23, 2558 A recovery operation undertaken by Spartan-II Blue Team in order to secure ONI research station Argent Moon.
Operation: BLEACH February 2558 An ONI mission related to Mission to Alpha Shard, involving Codename: FIXER recovering information regarding it.
Operation: BLIND FAITH 2552 A combined UNSC and Sangheili battlegroup follow the Prophet of Truth to Installation 00, locating and assassinating the leader of the Covenant.
Operation: BLOWBACK 2552 Aborted Spartan-II Black Team covert operation to gather intelligence and destroy Covenant ships in Sub-sector 35.
Operation: BLUE MOON Prior to 2530 The operation involved the sweeping and clearing of a URF base on Eridanus II by an ODST team. Spartan-II Linda-058 provided cover fire for the team.
Operation: BRAVADO 2552 An operation of involving Vice Admiral Michael Stanforth.
Operation: BREADCRUMB A mission in which Captain James Cutter was involved at some point.
Operation: BREAKER TRIP 2559 An operation conducted by the UNSC during the Created conflict.
Operation: BRONZE COBRA Between 2553 and 2557 An operation on Venezia undertaken by Spartan-II Linda-058.
Operation: BUMRUSH October 20, 2552 An ODST mission during the Battle of Mombasa in which they had to infiltrate the CAS-class assault carrier Solemn Penance and force the ship down.
Operation: BUZZHAWK September 2558 A Surakan Militia сounter-operation against Jiralhanae invaders on the planet Carrow designed to destroy their flagship, the Varric-pattern heavy cruiser Foebane.
Operation: CARRION HEART 2553 A UNSC operation details of which have been redacted by the ONI, though Frederic-104 participated in it.
Operation: CARTWHEEL 2540's A SPARTAN-III Beta Company mission.
Operation: CHARLEMAGNE 2496 The deployment of a company of ORION Project operatives against Insurrectionists over Eridanus II.
Operation: CHATTERBOX February 9, 2558 An operation in which Fireteam Crimson and Fireteam Majestic were tasked to remove Covenant cultists in certain locations on Requiem, with Majestic focusing on a communications array.[1]
Operation: CIRRUS 2552 An operation in which Blue Team was tasked to rescue key military personnel from the Forerunner world of Onyx.
Operation: CLEAN SWEEP An operation during the Insurrection.
Operation: COALPEPPER 2555 A Spartan-IV operation to recover the Huragok Quick to Adjust from United Rebel Front-controlled Talitsa.
Operation: COUGAR REDEMPTION Prior to 2557 UNSC operation undertaken by Kelly-087.
Operation: DAWN ECLIPSE Prior to 2558 A mission during which Spartan Locke served as security for an ONI xenoarchaeological survey team at a redacted location.
Operation: DAYBREAK Highly classified military exercises conducted by the UNSC Navy on Oban.
Operation: DELHI Prior to 2558 A denial of material mission against insurrectionist forces on Hat Yai, during which Spartan Locke succeeded in destroying twenty-one special technical assets.
Operation: DEVIL FREEDOM Prior to August 2552 Operation involving Kelly-087, who assisted the evacuation of civilians and targeting of Covenant landing craft for orbital bombardment on Imber
Operation: ECDYSIS Prior to 2560 A mission part of the Zeta Halo project undertaken at ONI Ilex Facility.
Operation: EASTERN AZURE Prior to 2558 A surveillance mission at Arcadia undertaken by Spartan Locke.
Operation: FALLEN WALLS 2532 UNSC defense of Jericho VII
Operation: FAR STORM 2555 Joint UNSC-Swords of Sanghelios mission to Installation 00.
Operation: FIRESIDE 2552 An ODST mission on Ariel.
Operation: FIRST STRIKE 2552 A small SPARTAN-II offensive against the Covenant battle station Unyielding Hierophant.
Operation: FLINT DEVIL Prior to 2557 An operation undertaken by Kelly-087 during which she was deployed to Installation 03 to provide security for a research facility on the ring.
Operation: FOCUS LENS 2555 2555 A joint-service exercise on Mars simulating a second invasion of the Sol system by the Covenant undertaken by Holly Tanaka.
Operation: GREY VEIL 2544 An assassination mission on the planet Heian undertaken by an ODST squad accompanied by Spartan-II Cal-141.
Operation: GUARDIAN LANCE 2540 The recovery of Covenant technology by the UNSC on Jericho VII.
Operation: HEMORRHAGE Prior to August 2552 Operation involving Kelly-087.
Operation: HERODUCK A mission in which Spartan-IVs conducted field tests of BARVO-class Mjolnir helmet.
Operation: HORIZON Prior to 2544 An operation undertaken by John-117 with mission target to destroy Covenant exploratory fleet elements near Cascade.
Operation: HORN AND HIDE Prior to August 2552 Successful assassination of a San'Shyuum missionary on Odenli'sh by Linda-058.
Operation: HWACHA 2537 Counter-boarding operation against Covenant fleet elements in the Bonanza asteroid belt.
Operation: HYPODERMIC dates unknown A mysterious and secret ONI project that has been in progress since 2531.
Operation: ICE DANCE March 18, 2526 An engagement between the UNSC forces and the Insurrectionists on Seoba.
Operation: INSTINCT 2553 An operation during which Fred-104 rescued UEG diplomatic personnel and eliminated insurrectionist forces on the human colony of Andesia.
Operation: IRON FIST Mid 2540s An operation undertaken by John-117 during which he was deployed to Miridem with the duel goals of asset denial and partial recovery of critical cyberinfrastructure assets.
Operation: IRON GREAVE Early 2537 An engagement between the UNSC and the Covenant on New Constantinople.
Operation: JOINT MONITOR After November 2552 Biohazard containment operation following the Battle of Voi in which Alpha-Nine participated.
Operation: JOVIAN WHISTLE May 2553 Operation conducted by the UNSC on the human colony of Gao in order to retrieve Forerunner technology on the planet.
Operation: KALEIDOSCOPE 2502 The assassination of rebel political leader, Jerald Mulkey Ander, on Harvest.
Operation: KICKSTAND 2559 An operation conducted by the UNSC during the Created conflict.
Operation: KINETIC STORM During or after 2553 A series of reconnaissance and strike operations in an unknown Joint Occupation Zone in which Edward Buck participated.
Operation: LAND GRAB February 7, 2558 An mission which saw the initial assault and neutralization of Covenant positions inside Requiem.[1]
Operation: LEFT JAB August 14, 2552 UNSC Naval operation in support of Operation: UPPER CUT during the Fall of Reach.
Operation: MAD HATTER Prior to 2558 A mission during which Spartan Locke was a part of a counter-mobility strike in a redacted location on Jiralhanae-controlled "forgeship" Boundless Artifice.
Operation: MARSH FLASH December 3, 2552 An operation against clusters of Jiralhanae leadership attempting to activate an artifact in Arizona, directed by Fleet Admiral Joseph Harper. One of the final battles in the Human-Covenant War and the final battle in the Battle for Earth.
Operation: OCEAN BREAKER July 2552 Spartan-II's deployment on Sigma Octanus IV.
Operation: OCEAN RAPTOR Prior to 2558 A UNSC operation that took place at a location redacted by the ONI. It was undertaken by Fireteam Stingray under command of Spartan Olympia Vale.
Operation: OCTAGON Prior to 2553 An operation undertaken by Linda-058. Mission details remain highly classified.
Operation: PALE SHADOW Prior to 2537 UNSC operation on Eirene involving Kelly-087.
Operation: PHALANX An operation on Circinius IV.
Operation: POLECAT An operation on a remote world that held a Sharquoi hive.
Operation: PROMETHEUS 2537 The attack on the Covenant shipyard K7-49 by SPARTAN-III Alpha Company.
Operation: RED CLOUD An ONI operation connected to the flood outbreak aboard the prison transport Mona Lisa.
Operation: RED FLAG 2552 A planned operation to capture a Prophet. Scrubbed by the Fall of Reach.
Operation: RED ROOM Prior to 2530 An operation undertaken by Linda-058. Mission details remain highly classified.
Operation: RETRIBUTION December 8–16, 2553 An operation undertaken to avenge the murder of Graselyn Tuwa and to rescue her family.
Operation: ROCK HOUSE Prior to 2530 Operation undertaken by Fred-104 in which he neutralized an insurrectionist facility and personnel on Eridanus II.
Operation: SENTRY Prior to 2558 Operation undertaken by Olympia Vale in which she served as an advisor to Central Command during negotiations between the UNSC and the Covenant fleet over Tribute.
Operation: SHELL GAME 2556 Operation undertaken by Fireteam Apollo to search for things of interest to ONI within the Threshold Exclusion Zone.
Operation: SILENT STORM 2526 Operation aimed at buying humanity time to create an effective defense against the Covenant early in the Human-Covenant War by striking hard and fast at their forces.
Operation: SLOW DIVE 2550 Offensive operation on a Covenant forward outpost
Operation: SMOKING ACES May 1, 2531 Operation undertaken by Blue Team against the United Rebel Front at Camp New Hope on the colony of Victoria.
Operation: SPEARBREAKER 2559 Operation undertaken by ODST squad Sunray 1-1 during the Second Ark Conflict.
Operation: STONEBREAK Operation involving at least one Orbital Drop Shock Trooper.
Operation: SUNSPEAR September - December 2552 A secret ONI retaliatory mission against Sangheili naval commanders undertaken by Spartan-II Gray Team, which resulted in the complete destruction of the planet Glyke.
Operation: SWITCHBACK Prior to 2544 An operation undertaken by John-117. Mission details have been redacted.
Operation: SWORD 52 August 2552 Support of evacuation operations during the Siege of New Alexandria in which Alpha-Nine participated.
Operation: TALON September 2525 Operation of the UNSC to capture Colonel Robert Watts from the URF's Eridanus Secundus undertaken by Blue Team.
Operation: TANGLEWOOD A mission in which Avery Junior Johnson took part as a private.
Operation: TENDRIL An operation related to the SPARTAN-II augmentation procedures.
Operation: THREE-CARD MONTE February 11, 2558 An search and destroy operation for several Covenant cultist outposts on Requiem.[1]
Operation: THRONE Operation involving at least one Orbital Drop Shock Trooper.
Operation: TORPEDO 2545 The attack on Covenant refinery planet Pegasi Delta by SPARTAN-III Beta Company.
Operation: TREBUCHET 2513 A lengthy UNSC conflict against Insurrectionists.
Operation: UPPER CUT August 14, 2552 The UNSC deployment of the FSS-1000 Sabre fighters against the Covenant onslaught during the Fall of Reach.
Operation: VERITAS 2496 ORION Project operation which uncovered Secessionist Union undercover agents occupying high offices within the Colonial Military Authority.
Operation: WARM BLANKET 2544 Classified ONI operation to retrieve the captured Dr. Catherine Halsey from a Covenant fleet following the Battle of Miridem.
Operation: WEASLEY A mission in which Spartan-IVs conducted field tests of the BARVO-class Mjolnir helmet.
Operation: WHISPER AMONG STARS An operation in which Captain James Cutter was involved at one point.
Operation: WHISTLE STOP May 2558 A UNSC operation on the surface of Ven III to recover a bioweapon from the hands of a Sangheili and numerous Kig-Yar pirates, slavers, and smugglers.
Operation: WHITE GLOVE 2552 The demolition of CASTLE Base and SWORD Base to prevent them from capture.
Operation: WHITE SAND An ONI operation connected to the flood outbreak aboard the prison transport Mona Lisa.
Operation: WHITE VAN 2558 An operation to provide security and oversight to Project SENIOR ICE on Oban
Operation: WINDOW PANE October 20, 2552 A mission undertaken by the ODST fireteam Alpha-Five with the goal of acquiring the Forerunner artifact known as the Conduit from the Covenant.
Operation: WOLFE October 7–12, 2559 A mission undertaken by Spartan-II Blue Team in order to recover the top-secret assets from the ruins of CASTLE Base on Reach.

Sources[edit]

  1. ^ a b c d e Halo 4, Limited Edition: Infinity Briefing Packet - Mission Briefing (variable between owners)
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