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{{Status|Canon}}
{{Era|Human|UNSC|HCW}}
{{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.
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 Operations==
==Known UNSC Operations==
{| class="wikitable sortable " style="width: 100%;" cellspacing="1" cellpadding="1" border="0"
*'''[[Operation: ABLE SENTRY]]''' - A force reconnaissance operation, [[Edward Buck]] participated in to prepare for [[Operation: PHALANX]] on [[Circinius IV]].
|-
 
!scope="col"|Operation
*'''Operation: ACADEMIC''' (February 10 [[2558]]) - [[Fireteam Majestic]] was ordered to advance on Covenant cultists on a location on [[Requiem]].<ref name="briefing">'''[[Halo 4 Limited Edition]]''', ''[[Infinity_Briefing_Packet#Mission_briefings|Infinity Briefing Packet - Mission Briefing]]'' (variable between owners)</ref>
!scope="col"|Date
 
!scope="col"|Description
*'''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 name="briefing"/>
|-
 
|'''[[Operation: ABLE SENTRY]]'''
*'''[[Operation: ASTUTE TIGER]]''' - An operation Edward Buck participated in on [[Harvest]] which consisted of deploying ADM's to predicted [[Covenant Empire|Covenant]] landing zones prior to [[UNSC]] evacuation.
|
 
|A force reconnaissance operation, [[Edward Buck]] participated in to prepare for [[Operation: PHALANX]] on [[Circinius IV]].
*'''[[Operation: ATHENA]]''' (2558) - Operation launched to discover the location of the [[Absolute Record]].
|-
 
|'''[[Operation: ACADEMIC]]'''
*'''[[Operation: ATLAS VIGILANCE]]''' (2558) - An aborted ONI mission undertaken by Spartan [[Vale]] that involved securing [[Shipmaster]] [[Ori 'Sumai]] at [[Salia III]].
|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: 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: ALL-SEEING EYE]]'''
*'''[[Operation: BLOWBACK]]''' (2552) - The UNSC covert operation to gather intelligence and destroy Covenant ships in [[Sub-sector 35]].
|February 8, 2558
 
|An operation that saw Fireteam Majestic recon for a location for a possible base establishment on Requiem.{{Ref/Reuse|briefing}}
*'''[[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: ANCHORITE]]'''
*'''[[Operation: BRAVADO]]''' (2552) - An operation of involving Vice Admiral [[Michael Stanforth]].
|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: BREADCRUMB]]''' - A mission in which [[James Gregory Cutter|Captain James Cutter]] was involved at some point.
|-
 
|'''[[Operation: ASTUTE TIGER]]'''
*'''[[Operation: BRONZE COBRA]]''' (Between 2553 and 2557) - An operation on [[Venezia]] undertaken by Spartan-II Linda-058.
|
 
|An operation Edward Buck participated in on [[Harvest]] which consisted of deploying ADM's to predicted Covenant landing zones prior to [[UNSC]] evacuation.
*'''[[Operation: BUMRUSH]]''' (October 20, 2552) - An ODST mission in which they had to infiltrate the [[CAS-class assault carrier]] ''[[Solemn Penance]]'' and force the ship down.
|-
 
|'''[[Operation: ATHENA]]'''
*'''[[Operation: CARRION HEART]]''' (2553) - A UNSC operation details of which have been redacted by the ONI, though [[Fred-104]] participated in it.
|2558
 
|Operation launched to discover the location of the [[Absolute Record]].
*'''[[Operation: CARTWHEEL]]''' (2540's) - A [[SPARTAN-III program|SPARTAN-III]] [[SPARTAN-III Beta Company|Beta Company]] mission.
|-
 
|'''[[Operation: ATLAS VIGILANCE]]'''
*'''[[Operation: CHARLEMAGNE]]''' ([[2496]]) - The deployment of a company of [[SPARTAN-I]] operatives against [[Insurrectionist]]s over [[Eridanus II]].
|2558
 
|An aborted [[ONI]] mission undertaken by [[Spartan-IV|Spartan]] [[Vale]] that involved securing [[Shipmaster]] [[Ori 'Sumai]] at [[Salia III]].
*'''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 name="briefing"/>
|-
 
|'''[[Operation: BIRD IN HAND]]'''
*'''[[Operation: CIRRUS]]''' (2552) - An operation in which [[Blue Team]] was tasked to rescue key military personnel from the Forerunner world of [[Onyx]].
|October 23, 2558
 
|A recovery operation undertaken by Spartan-II [[Blue Team]] in order to secure ONI research station ''[[Argent Moon]]''.
*'''[[Operation: CLEAN SWEEP]]''' - An operation during the [[Insurrection]].
|-
 
|'''[[Operation: BLEACH]]'''
*'''[[Operation: COALPEPPER]]''' - A [[Spartan-IV]] operation in [[2555]] to recover the [[Huragok]] [[Quick to Adjust]] from [[United Rebel Front]]-controlled [[Talitsa]].
|February 2558
 
|An ONI mission related to [[Mission to Alpha Shard]], involving [[Codename: FIXER]] recovering information regarding it.
*'''[[Operation: COUGAR REDEMPTION]]''' (Prior to 2557) - UNSC operation undertaken by [[Kelly-087]].
|-
 
|'''[[Operation: BLIND FAITH]]'''
*'''[[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.
|[[2552]]
 
|A combined UNSC and [[Sangheili]] battlegroup follow the [[Prophet of Truth]] to [[Installation 00]], locating and assassinating the leader of the Covenant.
*'''[[Operation: DAYBREAK]]''' - Highly classified military exercises conducted by the [[UNSC Navy]] on [[Oban]].
|-
 
|'''[[Operation: BLOWBACK]]'''
*'''[[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.
|2552
 
|Aborted [[Spartan-II]] [[Black Team]] covert operation to gather intelligence and destroy Covenant ships in [[Sub-sector 35]].
*'''[[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: BLUE MOON]]'''
*'''[[Operation: EASTERN AZURE]]''' (Prior to 2558) - A surveillance mission at [[Arcadia]] undertaken by Spartan Locke.
|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: FAR STORM]]''' ([[2555]]) - Joint UNSC-[[Swords of Sanghelios]] mission to Installation 00.  
|-
 
|'''[[Operation: BRAVADO]]'''
*'''[[Battle of Ariel|Operation: FIRESIDE]]''' (2552) - An [[ODST]] mission on [[Ariel]].
|2552
 
|An operation of involving [[Vice Admiral]] [[Michael Stanforth]].  
*'''[[Operation: FIRST STRIKE]]''' (2552) - A small [[SPARTAN-II]] offensive against the Covenant battle station ''[[Unyielding Hierophant]]''.
|-
 
|'''[[Operation: BREADCRUMB]]'''
*'''[[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.
|
 
|A mission in which Captain [[James Cutter]] was involved at some point.
*'''[[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: BREAKER TRIP]]'''
*'''[[Operation: GUARDIAN LANCE]]''' ([[2540]]) - The recovery of Covenant technology by the UNSC on [[Jericho VII]].
|[[2559]]
 
|An operation conducted by the UNSC during the [[Created conflict]].
*'''[[Operation: HEMORRHAGE]]''' (Prior to August 2552) - Operation involving Kelly-087.
|-
 
|'''[[Operation: BRONZE COBRA]]'''
*'''[[Operation: HORIZON]]''' (Prior to 2544) - An operation undertaken by John-117 with mission target to destroy Covenant exploratory fleet elements near [[Cascade]].
|Between [[2553]] and [[2557]]
 
|An operation on [[Venezia]] undertaken by Spartan-II Linda-058.
*'''[[Operation: HORN AND HIDE]]''' (Prior to August 2552) - Successful assassination of a [[San'Shyuum]] missionary on [[Odenli'sh]] by [[Linda-058]].
|-
 
|'''[[Operation: BUMRUSH]]'''
*'''[[Operation: HYPODERMIC]]''' (dates unknown) - A mysterious and secret [[Office of Naval Intelligence|ONI]] project that has been in progress since [[2531]].
|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: INSTINCT]]''' (2553) - An operation during which Fred-104 rescued [[UEG]] diplomatic personnel and eliminated insurrectionist forces on the human colony of [[Andesia]].
|-
 
|'''[[Operation: BUZZHAWK]]'''
*'''[[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.
|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: JOINT MONITOR]]''' (After November 2552) - Biohazard containment operation following the [[Battle of Voi]] in which [[Alpha-Nine]] participated.
|-
 
|'''[[Operation: CARRION HEART]]'''
*'''[[Operation: JOVIAN WHISTLE]]''' (May 2553) - Operation conducted by the UNSC on the human colony of [[Gao]] in order to retrive [[Forerunner]] technology on the planet.
|2553
 
|A UNSC operation details of which have been redacted by the ONI, though [[Frederic-104]] participated in it.
*'''[[Operation: KALEIDOSCOPE]]''' ([[2502]]) - The assassination of [[rebel]] political leader, [[Jerald Mulkey Ander]], on [[Harvest]].
|-
 
|'''[[Operation: CARTWHEEL]]'''
*'''[[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.
|2540's
 
|A [[SPARTAN-III]] [[Beta Company]] mission.
*'''[[Operation: LAND GRAB]]''' (February 7 2558) - An mission which saw the intitial assault and neutralization of Covenant positions inside [[Requiem]].<ref name="briefing"/>
|-
 
|'''[[Operation: CHARLEMAGNE]]'''
*'''[[Operation: LEFT JAB]]''' (2552) - UNSC Naval operation in support of Operation: UPPER CUT during the fall of Reach.
|[[2496]]
 
|The deployment of a company of [[ORION Project]] operatives against [[Insurrectionist]]s over Eridanus II.
*'''[[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: CHATTERBOX]]'''
*'''[[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]].
|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: OCEAN BREAKER]]''' (July 2552) - Spartan-II's deployment on [[Sigma Octanus IV]].  
|-
 
|'''[[Operation: CIRRUS]]'''
*'''[[Operation: OCEAN RAPTOR]]''' (Prior to 2558) - An UNSC operation that took place at a location redacted by the ONI. It was undertaken by [[Fireteam Stingray]] under command of Spartan [[Olympia Vale]].
|2552
 
|An operation in which Blue Team was tasked to rescue key military personnel from the [[Forerunner]] world of [[Onyx]].
*'''[[Operation: OCTAGON]]''' (Prior to 2553) - An operation undertaken by Linda-058. Mission details remain highly classified.
|-
 
|'''[[Operation: CLEAN SWEEP]]'''
*'''[[Operation: PALE SHADOW]]''' (Prior to 2537) - UNSC operation on [[Eirene]] involving [[Kelly-087]].
|
 
|An operation during the [[Insurrection]].
*'''[[Operation: PHALANX]]''' - An operation on Circinius IV.
|-
 
|'''[[Operation: COALPEPPER]]'''
*'''[[Operation: PROMETHEUS]]''' ([[2537]]) - The attack on the Covenant shipyard [[K7-49]] by [[SPARTAN-III]] [[Alpha Company]].
|[[2555]]
 
|A Spartan-IV operation to recover the [[Huragok]] [[Quick to Adjust]] from United Rebel Front-controlled [[Talitsa]].
*'''[[Operation: RED FLAG]]''' (2552) - A planned operation to capture a Prophet.
|-
 
|'''[[Operation: COUGAR REDEMPTION]]'''  
*'''[[Operation: RED ROOM]]''' (Prior to 2530) - An operation undertaken by Linda-058. Mission details remain highly classified.
|Prior to 2557
 
|UNSC operation undertaken by [[Kelly-087]].
*'''[[Operation: ROCK HOUSE]]''' (Prior to 2530) - Operation undertaken by Fred-104 in which he neutralized an insurrectionist facility and personnel on [[Eridanus II]].
|-
 
|'''[[Operation: DAWN ECLIPSE]]'''
*'''[[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.
|Prior to 2558
 
|A mission during which Spartan [[Locke]] served as security for an ONI xenoarchaeological survey team at a redacted location.
*'''[[Operation: SHELL GAME]]''' (2556) - Operation undertaken by [[Fireteam Apollo]] to search for things of interest to [[ONI]] within the [[Threshold]] Exclusion Zone.
|-
 
|'''[[Operation: DAYBREAK]]'''
*'''[[Operation: SLOW DIVE]]''' (2550) - Offensive operation on a Covenant forward outpost.
|
 
|Highly classified military exercises conducted by the [[UNSC Navy]] on [[Oban]].
*'''[[Operation: SWITCHBACK]]''' (Prior to 2544) - An operation undertaken by John-117. Mission details have been redacted.
|-
 
|'''[[Operation: DELHI]]'''
*'''[[Operation: SWORD 52]]''' (August 2552) - Support of evacuation operations during the [[Siege of New Alexandria]] in which [[Alpha-Nine]] participated.
|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: TALON]]''' (September 2525) - Operation of the UNSC to capture Colonel [[Robert Watts]] from the [[URF]]'s [[Eridanus Secundus]] undertaken by [[Blue Team]].
|-
 
|'''[[Operation: DEVIL FREEDOM]]'''
*'''[[Operation: TANGLEWOOD]]''' - A mission in which [[Avery Junior Johnson]] took part as a [[private]].
|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: TENDRIL]]''' - An operation related to the [[SPARTAN-II augmentation procedures]].
|-
 
|'''[[Operation: ECDYSIS]]'''
*'''Operation: THREE-CARD MONTE''' (February 11 2558) - An search and destroy operation for several Covenant cultist outposts on Requiem.<ref name="briefing"/>
|Prior to 2560
 
|A mission part of the [[Zeta Halo project]] undertaken at [[ONI Ilex Facility]].
*'''[[Operation: TORPEDO]]''' ([[2545]]) - The attack on Covenant refinery planet [[Pegasi Delta]] by [[SPARTAN-III]] [[Beta Company]].
|-
 
|'''[[Operation: EASTERN AZURE]]'''
*'''[[Operation: TREBUCHET]]''' ([[2513]]) - A lengthy UNSC conflict against Insurrectionists.
|Prior to 2558
 
|A surveillance mission at [[Arcadia]] undertaken by Spartan Locke.
*'''[[Operation: UPPER CUT]]''' (2552) - The UNSC deployment of the [[Sabre]] fighters against the Covenant onslaught during the [[Fall of Reach]].
|-
 
|'''[[Battle of Jericho VII|Operation: FALLEN WALLS]]'''
*'''[[Operation: VERITAS]]''' (2496) - ORION Project operation which uncovered [[Secessionist Union]] undercover agents occupying high offices within the [[Colonial Military Authority]].
|2532
 
|UNSC defense of Jericho VII
*'''[[Operation: WARM BLANKET]]''' ([[2544]]) - Classified ONI operation to retrieve the captured [[Catherine Halsey|Dr. Catherine Halsey]] from a Covenant fleet following the [[Battle of Miridem]].
|-
 
|'''[[Operation: FAR STORM]]'''
*'''[[Operation: WHISPER AMONG STARS]]''' - An operation in which Captain James Cutter was involved at one point.
|2555
 
|Joint UNSC-[[Swords of Sanghelios]] mission to Installation 00.  
*'''[[Operation: WHISTLE STOP]]''' (May 2558) - An 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.
|-
 
|'''[[Battle of Ariel|Operation: FIRESIDE]]'''
*'''[[Operation: WHITE GLOVE]]''' (2552) - The demolition of [[CASTLE Base]] to prevent it from capture.
|2552
 
|An ODST mission on [[Ariel]].
*'''[[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: 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]].
|}


==Sources==
==Sources==
{{Ref/Sources}}
<references/>
 
[[Category:Operations| ]]
[[Category:Operations| ]]

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