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{{Status|Canon}} {{Cleanup}} {{References}} {{Military infobox |image={{Pageimage|HTMCC-H3 TheCovenant Marines 2.png}}[[File:UNSC MC Logo.svg|100px|class=invert-dark]]<br>The [[Symbols of the UNSC|logo of the Marine Corps]] [[File:HTMCC-H3 TheCovenant Marines 2.png|350px]] |formed=[[2163]]{{Ref/Reuse|waypoint unsc}}{{Ref/Book|Id=Enc22Marines|Enc22|Page=56-57}} |affiliation={{Icon|UEG}} [[Unified Earth Government]]{{Ref/Reuse|waypoint unsc}} |branch={{Icon|UNSC 2560}} [[United Nations Space Command]]{{Ref/Site|Id=waypoint unsc|URL=https://www.halowaypoint.com/en-us/universe/factions/unsc|Site=Halo Waypoint|Page=UNSC|D=19|M=01|Y=2021|LocalArchive=https://archives.halopedia.org/waypoint/www.halowaypoint.com/en-us/universe/factions/unsc.html}} |type= |role=Expeditionary warfare |size= |nicknames="Jarheads",{{Ref/Game|HSA|Halo: Spartan Assault/Quotes|Quotes|Quote=Any jarhead can toss a grenade|Quotee=Jennifer Regan}} "Leathernecks"{{Ref/Level|CE|The Truth and Reconciliation}} |battles=*[[Interplanetary War]] *[[Insurrection]] *[[Human-Covenant War]] *[[Post-Covenant War conflicts]] |commanders= *[[Commandant of the Marine Corps]]{{Ref/Reuse|Enc22Marines}} *[[General]] [[Hogan]]{{Ref/Comic|Id=HE1|HE|Issue=1}} *General [[Daniel Black]] *General [[Van Zandt]] *General [[Kits]] *[[Colonel]] [[Kennedy Mehaffey]] *Colonel [[Felicia Sanderson]] *Colonel [[Robert Watts]] {{C|Formerly}} }} {{Quote|First to Fight.|UNSC Marine Corps Credo{{Ref/Site|URL=http://www.joyridestudios.com/halo_3_marine_1.asp|Site=Joyride Studios|Page=UNSC Marine #1|D=12|M=04|Y=2007}}}} The '''UNSC Marine Corps''' is a branch of the [[United Nations Space Command]] responsible for conducting land-based expeditionary amphibious and airborne combat operations, using the mobility provided by the [[UNSC Navy]] to rapidly deliver forces. '''Marines''' are also charged with the defense of Navy vessels and installations from hostile forces.{{Ref/Book|Id=enc54|Enc11|Page=54}} The branch is one of the two senior services in the UNSC (alongside the UNSC Navy), formed in [[2163]] during the [[Interplanetary War]] from the constituent [[National government|nations]] of the [[United Nations]] on [[Earth]].{{Ref/Reuse|Enc22Marines}} Since then, they have fought in nearly every single major conflict the UNSC has been embroiled in including the [[Insurrection]], the [[Human-Covenant War]], the [[Post-Covenant War conflicts|postwar conflicts]], and the [[Created uprising]]. The Marine Corps' counterpart within the [[Colonial Military Authority]] (CMA) are the [[CMA Marine Corps]]. ==Mission and roles== {{Quote|Provide combined arms expeditionary forces and security detachments.|The Marine Corps' official mission statement.{{Ref/Book|Id=OSFMMarines|OSFM|Page=130-132}}}} The official mission of the UNSC Marine Corps is to maintain an expeditionary warfare force capable of deploying alongside the [[UNSC Navy]] for operations in deep space.{{Ref/Reuse|OSFMMarines}} The Marine Corps' collateral functions include; *Enforcement of emergency military law in designated crisis areas.{{Ref/Reuse|OSFMMarines}} *Development of doctrine, procedures and equipment that are of common interest to the Army and Navy.{{Ref/Reuse|OSFMMarines}} *Furnishing security teams for the protection of UNSC property and high-value personnel.{{Ref/Reuse|OSFMMarines}} *Deployment of security detachments and organizations for service on Navy ships.{{Ref/Reuse|OSFMMarines}} *Development of doctrine, tactics, techniques and equipment for the rapid deployment and utilization of interstellar combat power.{{Ref/Reuse|OSFMMarines}} A small detachment of Marines can generally be found aboard most [[UNSC starship]]s, with Marines assigned to guard a given vessel's [[bridge]] and [[nuclear weapon]]s storage, and responsible for implementing the [[Cole Protocol]] and other security procedures in the event of a ship's evacuation.{{Ref/Book|Enc22|Page=39}} ==History== ===Origins and formation=== [[File:HM-Interplanetary War-2.jpg|200px|thumb|left|A firefight inside a Jovian installation during the Interplanetary Wars.]] The [[United States of America|United States]] [[Wikipedia:United States Marine Corps|Marine Corps]] is the precursor to the UNSC Marine Corps.{{Ref/Book|Id=enc31|Enc11|Page=31}} As the [[Interplanetary War]] began in the [[2160]]s, the [[national government]]s of the [[Sol system]] strengthened and deployed their militaries for conflict. However, the distributed nature of their forces led to disorder among the ranks of these militaries.{{Ref/Book|Id=enc42|Enc11|Page=42}} In response, the [[United Nations]] in [[2163]] commissioned a force primarily composed of naval and marine assets; the [[United Nations Space Command]], its [[UNSC Navy|Navy]], and its Marine Corps.{{Ref/Reuse|waypoint unsc}} The Marine Corps would be formed from the combination of the naval and spaceborne expeditionary units from various [[National government|nations]] into a single force.{{Ref/Reuse|Enc22Marines}} Triggered by [[Koslovic]] attacks at the [[Argyre Planitia]] shipbuilding plants on [[Mars]], the United Nations began the [[Mars Campaign]] in [[2163|December 2163]]. This campaign marked the first extraterrestrial deployment of the UNSC Marine Corps, as the UNSC launched a series of lightning strikes against Koslovic forces near the Argyre Planitia.{{Ref/Reuse|enc42}} The decisive success of this campaign had a major impact on future military doctrine, resulting in UNSC Navy [[warship]]s carrying large Marine contingents for ground assaults and [[Naval boarding|boarding]] actions. Following the success of the UNSC Marine Corps at Mars, recruitment drives and [[propaganda]] tactics strongly bolstered UNSC forces and the Koslovics and [[Frieden]]s were defeated on [[Earth]] in [[2170]].{{Ref/Site|Id=XC|URL=http://www.xbox.com/en-US/games/h/halo/storyline.htm|Site=Xbox.com|Section=Halo: Combat Evolved, Game Features|Page=Story Line|D=7|M=11|Y=2008|LocalArchive=Archive:Xbox.com/Halo/Timeline}}{{clear}} ===The Insurrection=== [[File:H4FUD Marine.png|thumb|180px|A marine in [[Corbulo Academy of Military Science|Corbulo Military Academy]] during the period of the Insurrection circa [[2526]].]] {{Main|Insurrection}} From [[2494]] to [[2525]], the UNSC Marine Corps would be responsible for dealing with [[Insurrectionist]] uprisings on UNSC colonies and star systems. From [[2512]], the Marines were involved in one of the largest operations in their history, [[Operation: TREBUCHET]], aimed at quelling rebel uprisings in the [[Eridanus system|Eridanus]] and [[Epsilon Eridani system|Epsilon Eridani]] star systems. Units from the [[9th Marine Expeditionary Force]] were sent to [[Eridanus II]] in force, hoping to capture leaders of the rebel movement and pacify the population. One of these units, the first Battalion of the [[21st Marine Division]] commanded by [[Lieutenant Colonel]] [[Ponder]], was involved in a disastrous mission to try and capture the second in command of rebel forces in [[Elysium City]], which ended in the leader's family being killed and Ponder wounded and demoted.{{Ref/Novel|Id=CH7|CH|Chapter=7}} In [[2524]], a Marine battalion was posted at the colony world of [[Tribute]], commanded by Lieutenant Colonel [[Aboim]] and supported by the corvette {{UNSCShip|Bum Rush}}, with air support from [[AV-14 Hornet]]s. The battalion attempted to put a stop to rebel bomb makers near the city of [[Casbah]]. Two special warfare squads, led by [[Staff Sergeant]]s [[Avery Johnson]] and [[Nolan Byrne]], were involved in disastrous operation in June. Byrne's team was killed during a hostage situation at a [[Jim Dandy]] restaurant near Casbah city; thirty-eight civilians, three Marines, and two rebels were killed in the bombing.{{Ref/Novel|Id=CHP|CH|Prologue}} ===Human-Covenant War=== ======Outer Colony campaigns====== [[File:HW Render Infantry 1920-crop.jpg|thumb|300px|left|UNSC Marines during the [[Harvest campaign]].]] The UNSC Marine Corps' first encounter with the alien [[Covenant]] was at the [[First Battle of Harvest]] in [[2525]]. At the event, only three Marine officers were present, training the planet's [[Colonial Militia]]. During the battle, [[Captain (Marine Corps)|Captain]] [[Ponder]] became the Corps' first casualty of the war. Not long after the First Battle of Harvest, the Corps' experienced one of their first major encounters with the Covenant at numerous engagements throughout the Outer Colonies, including the [[Harvest Campaign]], eventually lasting from [[2526]] to [[2531]]. At the final stages of the campaign, the Marines quickly established a [[Alpha Base (Harvest)|base of operations]] in Harvest's arctic region. A reconnaissance force led by [[Sergeant]] [[John Forge]] was deployed to survey the area. However, during the patrol, Covenant forces under the command of [[Arbiter]] [[Ripa 'Moramee]] overran and nearly destroyed the base. Forge rallied scattered marines, who quickly retook it from the aliens. After receiving reinforcements and repairing the base, the Marines fought through a sizable Covenant garrison force in an attempt to secure a mysterious [[Forerunner]] [[Relic (location)|relic|structure]] in the region. In the final weeks of 2525, the UNSC Marine Corps deployed en masse to the colony of [[Alpha Corvi II]] to [[Battle of Alpha Corvi II|defend]] its capital city from the Covenant who had invaded the planet in search of a Forerunner artifact. Their deployment also served to divert the bulk of the Covenant's infantry away from [[Blue Team]], who were charged with destroying the expeditionary force seeking to recover the artifact and then to claim it for the UNSC. Although Blue Team succeeded in their objectives with the reluctant assistance of the [[United Rebel Front]], the UNSC Marines were not able to repel the enemy and were ordered to abandon their offensive with casualties exceeding thirty percent. The UNSC fleet rescued as many surviving soldiers as possible before the few vessels that remained were ordered out of the system. The [[Battle of Arcadia]] saw the UNSC Marine Corps holding the defensive line around major population centers to allow evacuation for the civilian population with the assistance of the SPARTAN-II [[Red Team]]. Successfully keeping Covenant forces from occupying the population centers, the Corps' began launching multiple assaults on the Covenant's base of operations to reclaim the planet. The UNSC Marine Corps would take part in numerous actions against the Covenant on many of the Outer Colonies in the years that followed. Unfortunately, they were hopelessly outgunned, out-numbered and out-flanked by the Covenant forces and the Marine Corps would suffer tremendous losses in what eventually saw the near-destruction of the Outer Colonies. ======Siege of the Inner Colonies====== [[File:HaloAnniversaryMarine.jpg|thumb|251px|A UNSC Marine on the {{UNSCShip|Pillar of Autumn}} circa [[2552]].]] The Corps' experienced another encounter with the Covenant on the colony world of [[Sigma Octanus IV]] in [[2552]]. Upon landing, the Marines' hardware and equipments were rendered useless due to the planet's harsh environment. In the first stage of the battle, during a naval engagement, a Covenant {{Pattern|Ruma|light carrier}} was able to land a large contingent of troops on the northern pole of the planet. The Covenant were able to take [[Côte d'Azur]], a major population center. Fortunately almost all of the civilian population was evacuated beforehand, but the UNSC Marine Corps' [[General (UNSC)|General]] [[Kits]] launched a failed assault to retake the city. The UNSC Marine Corps maintained a sizable presence on [[Reach]] when the Covenant [[Fall of Reach|stormed the planet]]; they bypassed the defense fleet in orbit, as well as the [[MAC Gun]] platforms, and made a considerable landing of soldiers on the North and South Poles. During the early hours of the battle, the Covenant had overrun [[FLEETCOM HQ]] on Reach, destroying the perimeter and swarming the Marine defenders with [[Type-26 Ground Support Aircraft|Banshees]], [[Zurdo-pattern Wraith|Wraiths]], and battalions of infantry. The situation became severe and critical when the Marines were forced to defend the [[Orbital Defense Generator]]s against a massive Covenant assault, using every available armored vehicle and defensive position from available bunkers. The Battle of Reach became one of the most devastating defeats for the UNSC Marine Corps in the Human-Covenant War. The surviving Marines from the Battle of Reach served an important role in the [[Battle of Installation 04]], taking part in such engagements as securing the {{UNSCShip|Pillar of Autumn}} crash site, launching multiple guerrilla assaults on Covenant convoys and base of operations and rescuing captured Pillar of Autumn's personnel from a [[Truth and Reconciliation|Covenant battlecruiser]]. Initially, the Marines were part of a special operation consisting of a sizable [[Orbital Drop Shock Trooper]] special forces detachment and a standard Marine detachment to infiltrate [[High Council Chamber|Covenant High Command]] and kidnap a Covenant [[Hierarch|Prophet]]. ======Earth and the end of the war====== [[File:H2A-John&marines.jpg|thumb|left|300px|Two Marines standing beside [[John-117|Spartan-117]] during the [[Battle of Mombasa]].]] {{Quote|Dear humanity, we regret being alien bastards. We regret coming to Earth. And we most definitely regret that the Corps just blew up our raggedy-ass fleet!|[[Sergeant]] [[Avery Johnson|Johnson]]{{Ref/Level|H2|H2:Outskirts|Outskirts}}}} The UNSC Marine Corps remained in force on [[Earth]] and its geosynchronous [[orbital defense platform]]s, and were mostly prepared to repulse a relatively small Covenant invasion, when fifteen Covenant capital warships, two [[CAS-class assault carrier|assault carriers]] and thirteen [[Ket-pattern battlecruiser|battlecruisers]], entered the Sol System. They then played a significant role in during the [[Battle of Earth]], where they defended multiple major population centers from the Covenant's occupation such as those in [[Battle of Mombasa|New Mombasa]], [[Battle of Cleveland|Cleveland]], and [[Battle of Havana|Havana]]. Several Marine detachments achieved a turning point during the course of the Battle of Earth when they managed to retake the cities and maintain temporary ground control for UNSC reinforcements to arrive. One such Marine detachment was [[E2-BAG/1/7]], which was able to engage the Covenant ground forces in [[Mombasa]], [[Kenya]] as the Covenant assault carrier landed ground forces in the city. The Marine Corps also partook in a major assault alongside the UNSC Navy in the [[Battle of Voi]]. As ground forces, the Marines were to engage in the [[Battle of Voi]] with a [[John-117|SPARTAN-II supersoldier]] by eliminating anti-air vehicles and batteries, as well as destroying temporary Covenant outposts to allow UNSC reinforcements to refortify the area. The Marines fought in the war's [[Battle of Installation 00|last battle]] at [[Installation 00|the Ark]]. Starting with their deployment in an [[operation]] codenamed Operation: BLIND FAITH,{{Ref/Book|Enc09|Page=57}} the Marines launched numerous attacks on Brute strongholds, including an attack on the Ark's [[cartographer]]. After fighting on foot, and in heavy vehicles, the Marines drove off the Covenant. They then teamed up with the Elites and attacked three [[barrier tower]]s protecting the Ark's [[Installation 00 Citadel|Citadel]]. After capturing the first tower, with the help of the Master Chief, Marines and UNSC [[pilot]]s then defeated the Covenant aerial forces. They then waited for the deactivation of the third tower, where they then staged an attack on the Citadel. After fighting two Scarabs, they were then evacuated back to the fleet while the Master Chief and the Arbiter killed Truth. The surviving Marine forces fell back to Earth through the Portal on board the ''[[Shadow of Intent]]'' before [[Installation 08]] was activated. ===Further engagements=== {{Main|Post-Covenant War conflicts}} [[File:H4 SpOps LandGrab ThirdPerson 02.jpg|thumb|250px|A Marine wearing a post-war BDU circa [[2557]].]] After the end of the war against the Covenant, the UNSC Marines participated in a number of engagements against the [[Covenant remnants]] and the [[Insurrectionist]]s. Significant numbers of Marines stationed on [[Draetheus V]] helped fend off the [[Merg Vol's Covenant|Covenant]] assault during the [[Battle of Draetheus V]].{{Ref/Game|SA}} A force of Marines were also assigned to the UNSC Navy's new flagship, {{UNSCShip|Infinity}}. When the ship subsequently crash-landed on [[Requiem]] in [[2557]], the Marines joined the [[Spartan Operations|Spartans]] in fighting off the opposing [[Jul 'Mdama's Covenant|Covenant]] forces and [[Forerunner]] [[Promethean]]s in the [[First Battle of Requiem]]. When ''Infinity'' returned to Requiem in order to conquer the planet, Marines were once again dispatched in a joint campaign to reinforce the Spartans. The [[Requiem Campaign]], waged in [[2558]], saw both sides trying to seize the [[Janus Key]] before the [[shield world]]'s destruction.{{Ref/SpOps}} By [[2558]], some [[War Games]] simulations feature [[AI]] Marines that assist the [[Spartan-IV]]s in their training.{{Ref/Site|Id=CFZone|URL=https://www.halowaypoint.com/en-us/news/canon-fodder-in-the-zone|Site=Halo Waypoint|Page=Canon Fodder - In the Zone|D=23|M=12|Y=2019}} ==Organization== ===Command and control=== The administrative head of the UNSC Marine Corps is the [[Commandant of the Marine Corps]] (CMC), who serves as the corps' most senior general and service representative in both the [[UNSC Security Council]] and [[Unified Ground Command]]. The CMC is responsible for organising, planning and implementing all Marine Corps activities.{{Ref/Reuse|Enc22Marines}} As of [[2558]], the Marines' seat on the Security Council was filled by General [[Hogan]].{{Ref/Reuse|HE1}} Prior to the planet's destruction in 2552, the Marine Corps was headquartered at [[Fleet Command Headquarters]] on [[Reach]].{{Ref/Novel|CH|Chapter=2}} The Marines are unusual in that, unlike, the other service branches of the UNSC, they may fall under the influence of both of the UNSC's [[United Nations Space Command#Combatant commands|combatant commands]] ([[UNSC Naval Command|Naval Command]] (NAVCOM) and [[Unified Ground Command]] (UNICOM)) at various points.{{Ref/Reuse|Enc22Marines}} Generally-speaking, they fall under UNICOM authority{{Ref/Reuse|enc54}} (hence the Commandant's representation in UNICOM senior staff), though do also have some token representation within NAVCOM (particularly the Navy-dominated [[UNSC Fleet Command]]) due to their close work with the Navy.{{Ref/Book|Id=fb|Halo: Fleet Battles core rulebook|Page=6}} Operational control (OPCON) of Marine units is handed to one of the two combatant commands, who in turn form joint-task forces alongside units from other branches for assignment to one of [[CENTCOM Region|four regions]] under the control of a [[Central Command]] (CENTCOM), who then direct the deployment of that task force's assets as needed. While OPCON allows for the direction of a Marine mission and delegation of tasks, it does not provide the authority to alter the internal organisation of its subordinate units.{{Ref/Reuse|Enc22Marines}} Administrative control (ADCON) is provided by [[Marine Corps Forces]] (MARFORM), which focuses on the ability to regorganise, train, and direct a given unit's long-term activites.{{Ref/Reuse|Enc22Marines}} The Marines' ability for units to be reassigned between combatant commands is managed by [[Joint Deconfliction Team]]s. Marine Corps forces assigned to NAVCOM form a unit referred to as Fleet Marine Forces under the operational control of [[UNSC Fleet Command|FLEETCOM]] command. Fleet Marine Forces include Marines assigned to shipboard and facility security, [[Naval boarding|boarding parties]] and most aerospace assets. Landing parties and expeditionary ground combat elements remain under the jurisdiction of NAVCOM, though this reading of the regulations is vehemently contested by UNICOM. Conversely, Marines conducting long-term planetary security missions, train-and-equip details and force augmentation for UNSC garrisons fall under UNICOM control.{{Ref/Reuse|Enc22Marines}} Marine [[UNSC Special Forces|special forces]] including the [[Orbital Drop Shock Troopers]] (ODSTs) and [[UNSC Marine Corps Force Reconnaisance|Force Recon]] typically operate under the control of [[Naval Special Warfare Command]] (NAVSPECWARCOM), within the UNSC Navy.{{Ref/Reuse|Enc22Marines}} ===Operating forces=== Marine Corps forces are typically deployed as part of a [[Marine Expeditionary Force]], which may encompass several divisions as subordinate units and is itself subordinate to Fleet Marine Forces.{{Ref/Novel|CH|Chapter=7}} The Marines' unit structure is as follows: :xx - [[Division]] - 14,000 Marines led by a [[Major General]] and deployed as a [[Marine Expeditionary Force|Marine Expeditionary Unit]]{{Ref/Reuse|Enc22Marines}} :x - [[Brigade|Marine Brigade]]/[[Wing|Marine air wing]] - 9,000 Marines led by a [[Brigadier General]] and deployed as a Marine Air Wing{{Ref/Reuse|Enc22Marines}} :||| - [[Regiment]]/Marine Air Regiment - 3,000 Marines led by a [[Lieutenant Colonel]] or [[Colonel]] and deployed specifically by UNICOM as a Rapid Reaction Force{{Ref/Reuse|Enc22Marines}} :|| - [[Battalion]] - 900 Marines led by a Lieutenant Colonel or Colonel and deployed as a [[task force]] ground combat element or as a unit assigned to a [[UNSC carrier|carrier]]{{Ref/Reuse|Enc22Marines}} :| - [[Company]] - 180 Marines led by a [[First Lieutenant]] or [[Captain (UNICOM)|Captain]] and deployed as a special task force or as a unit assigned to a [[cruiser]]{{Ref/Reuse|Enc22Marines}} :{{*}}{{*}}{{*}} - [[Platoon]] - 40 Marines led by a [[Second Lieutenant]] or [[Staff Sergeant]] and deployed as a unit assigned to a [[UNSC frigate|frigate]]{{Ref/Reuse|Enc22Marines}} :{{*}}{{*}} - [[Squad]] - 12 Marines led by a Corporal or [[Sergeant]]{{Ref/Reuse|Enc22Marines}} :{{*}} - [[Section]] - 8 Marines led by a Lance Corporal or Corporal{{Ref/Reuse|Enc22Marines}} :Ø - [[Fireteam]] - 3-4 Marines led by a [[Lance Corporal]] or [[Corporal]]{{Ref/Reuse|Enc22Marines}} ==Personnel== ''See [[:Category:UNSC Marine Corps personnel|here]] for a list of Marine personnel.'' Large numbers of men and women are employed by the UNSC Marine Corps. Service people hold ranks, which are divided between officers and enlisted. The rank structure of the UNSC Marine Corps is based around that of the [[Wikipedia:United States Marine Corps|United States Marine Corps]]. ===Rank structure=== {{Main|UNSC rank structure#UNICOM ranks}} The Marines by-and-large utilise the same rank structure found throughout the rest of UNICOM, mostly-shared with the [[UNSC Army]] and [[UNSC Air Force]]. However, unlike the Army, the Marine Corps only rarely selects or utilises warrant officers.{{Ref/Book|OSFM|Page=139}} {{:UNSC rank structure/UNICOM}} ===Uniform=== {{Main|UNSC Marine Corps Dress Uniform|UNSC Marine Corps Battle Dress Uniform}} [[File:H2A - Chief and Johnson on Cairo.jpg|thumb|250px|Sergeant Johnson wearing a white dress uniform.]] Marine Corps Dress Uniforms are worn on formal or ceremonial occasions, and are similar to those worn by their 20th and 21st Century predecessors in the [[Wikipedia:United States Marine Corps|United States Marine Corps]]. A variety of dress uniforms exist, including a white-and-blue uniform,{{Ref/Level|H2|H2:Cairo Station|Cairo Station}} an all-blue uniform,{{Ref/Novel|CH|Chapter=2}} and an all-black funerary uniform.{{Ref/Marketing|ODST|The Life}} In the field, Marines usually wear passively [[camouflage]]d uniforms with usually green [[M52B body armor]]. Lightweight, though durable, the armor is surprisingly resilient. Marines don [[Ushuaia Armory]]'s [[CH252 helmet]]s equipped with a [[heads-up display]] and radio system.{{Ref/Book|Id=enc49|Enc11|Page=49}} These helmets are mounted with [[Helmet recorder|recorders]],{{Ref/Level|CE|CE:343 Guilty Spark|343 Guilty Spark}} and certain models feature holographic text-displaying [[UNSC tactical eyepiece|eyepieces]] or [[Shooting glasses|ballistic goggles]]. Some Marines have been known to employ the "Rex" [[Visual Intelligence System, Reconnaissance|VISR]] for using in tracking down targets, such as Jiralhanae holdouts on [[Tribute]] and Earth.{{Ref/Game|H5G|Detail=Rex VISR description}} In addition to helmets, Marines on field operations in more humid locales sometimes choose to wear [[Wikipedia:Boonie hat|boonie covers]], or those in colder environments don visored and thicker helmets. Marine [[Non-commissioned officer|NCOs]] are easily recognized by the cover they wear complete with the UNSC insignia, although they oftentimes substitute this soft cover for a more practical protective helmet; post-war NCOs often wear a variant with a fully sealed helmet that is otherwise worn by scouts. Marines sometimes don small helmet communications microphones or black-phased sunglasses on their helmets, and others carry backpacks. Marines sometimes wear black gloves to protect their hands and improve their grip on their weapons. Some Marines sport orange visors which attach to the brim of their helmets. Marines operating in cold environments wear environmentally-tailored armor, with insulated snow camouflage utilities and full body armor as well as insulated and visored helmets with something anal