Editing Electronic warfare (section)

==Electronic warfare in terrestrial combat==
===Human usage===
[[File:HW GremlinDisablesPylon.png|thumb|right|300px|An XRP12 Gremlin uses its EMP functionality to disable a Forerunner structure.]]
In the realm of terrestrial combat, human militaries utilize a myriad of electronic warfare technologies. Some are stationary structures like the [[watchtower]], an automated device sometime constructed alongside UNSC [[firebase]]s that uses microdrone clouds and former-Covenant hyperscanner technology to reveal enemy forces hidden by active camouflage.{{Ref/Game|Id=PLWatch|HW2|Phoenix Logs|Detail=Watchtower}} Other human electronic warfare devices are mounted on or deployed from vehicles, while still others are infantry-portable. The technology behind the [[XRP12 Gremlin]] has its origins during the [[Insurrection]] where the UNSC used it as a testbed for non-[[nuclear weapon|nuclear]] electromagnetic pulse technology, hoping to use it to remotely prevent the detonation of weapons of mass destruction.{{Ref/Book|Id=EVG|EVG|Page=83}} Following the Covenant's [[First Battle of Harvest|attack]] on [[Harvest]] at the dawn of the [[Human-Covenant War]], the Gremlin's [[X23 Non-Nuclear Electromagnetic Pulse Cannon]] was developed with the intent of using it to disrupt Covenant [[generator]]s and relay stations, though it also proved to be effective at disabling armored vehicles.{{Ref/Book|Halo Wars: Official Strategy Guide|Page=38|Section=Firebase Units}} [[Stealth Kodiak|A variant]] of the [[M400 Kodiak]] is equipped with active camouflage systems.{{Ref/Game|Id=StealthKodiak|HW2|[[Stealth Kodiak]] [[Blitz]] in-game unit}} As of [[2560]], at least one variant of the [[M15 Razorback]] undergoing field trials with the UNSC features an electronic warfare suite.{{Ref/Book|Id=Enc22P135|Enc22|Page=135}} The [[EV-44 Nightingale]] sports basic forms of electronic warfare capabilities with its multi-spectrum smokescreen launchers and disposable jammers capable of concealing ground forces within a targeted area.{{Ref/Site|Id=CFArt|URL=https://www.halowaypoint.com/en-us/news/the-art-of-war-s|Site=Halo Waypoint|Page=Canon Fodder - The Art of War(s)|D=18|M=06|Y=2021}}

The UNSC utilizes several infantry-portable pieces of electronic warfare technology. One such device is known as a "[[spoofer]]," which can be placed on an otherwise inoperable piece of technology—such as a locked or damaged [[door]]—to override it using an electrical current.{{Ref/Novel|Id=TF173|TF|Chapter=6}} [[Office of Naval Intelligence]] infiltration teams have also been known to utilize the [[Shroud Screen]], a small device which projects a [[Holography|holographic]] sphere capable of disrupting electro-optical sensors and [[motion tracker]]s.{{Ref/Twitter|Id=Database|Halo|1636789506778058752|Halo|Quote=SHROUD SCREEN - Developed primarily for use by ONI infiltration teams, the Shroud Screen create a localized field that disrupts electro-optical sensors and motion trackers.|D=6|M=1|Y=2024}} Another example of portable electronic warfare technology is the [[armor restraint]], a puck-shaped device that can be attached to the surface of [[MJOLNIR Powered Assault Armor]] to short-circuit the [[Powered exoskeleton|exoskeleton]] and render the wearer immobile.{{Ref/Level|Id=Glassed|H5G|H5G:Glassed|Glassed}} The UNSC has also fielded an [[energy shielding]] technology for MJOLNIR armor known as [[armor lock]], which temporarily immobilizes user while overcharging their armor shielding. Upon deactivation of armor lock, the technology emits an electromagnetic pulse.{{Ref/Game|Id=HRmanual|HR|Game manual - Ordnance}} Another MJOLNIR-compatible electronic warfare technology is the [[Type-27 hologram|Type-27 Responsive Holographic Form Emulator]], a piece of revere-engineered Covenant technology that allows the user to create a [[Holography|holographic]] copy of themselves and command it to move to a certain location to deceive enemy personnel and sensors.{{Ref/Book|Id=H4VGHolo|H4EVG|Page=139}}{{Ref/Site|Id=h4site|URL=http://halo.xbox.com/halo4#!halo-evolved/gameplay/31afe32b-0e07-45c0-9424-3adc6e1eadca|Site=Halo 4 Official Site|Section=Gameplay|D=22|M=3|Y=2009}} The [[Semi-Powered Infiltration armor]] commonly worn by [[SPARTAN-III program|Spartan-III]]s during the Human-Covenant War incorporates photoreactive panels on its outmost surface that can hide the wearer from sight in a manner similar to—though less advanced than—the Covenant's active camouflage systems.{{Ref/Novel|Id=GoO9|GoO|Chapter=9}} Another common electronic warfare technology commonly incorporated into UNSC armor is data management system called [[Visual Intelligence System, Reconnaissance]], or VISR. Many variants of VISR exist,{{Ref/Reuse|H4VGHolo}} with some being able to identify enemies even when they are cloaked by active camouflage.{{Ref/Film|Id=motioncomic|EvoMC|Detail=[[Headhunters (story)|Headhunters]] motion comic}} The [[Threat Sensor]] is another piece of electronic warfare device with the intended use of revealing hidden enemies. When fired from its handheld launcher, the device emits sensor pulses that are even capable of identifying targets utilizing active camouflage, relaying this information back to friendly MJOLNIR wearers.{{Ref/Site|URL=https://www.halowaypoint.com/en-us/news/inside-infinite-july-2021|Site=Halo Waypoint|Page=Inside Infinite - July 2021|D=23|M=7|Y=2021}}{{Ref/Level|Id=The Tower|HINF|The Tower}}

[[File:NobleSix BansheeStun.jpg|thumb|left|250px|[[SPARTAN-B312]] utilizes an M319 grenade launcher's EMP functionality to disable an {{Pattern|Is'belox|Banshee}}.]]
As with in the realm of naval combat, the UNSC utilizes several munitions with electronic warfare capabilities in terrestrial combat. These include the [[XGBU-302 bomb]], capable of emitting a localized electromagnetic pulse and commonly deployed using the [[Maastricht/Raleigh Ordnance Delivery-Application System]] aboard the [[B-65 Shortsword]].{{Ref/Book|Id=EVG176|EVG|Page=176}} [[Sergeant]] [[John Forge]] notably modified his [[John Forge's Warthog|personal Warthog]] to fire "[[25x130mm#Anvil round|Anvil round]]s," specialized munitions that explode with an electromagnetic pulse.{{Ref/Game|Id=PLForgeHog|HW2|Phoenix Logs|Detail=Forge's Warthog}} The [[M3063 deployable turret]] is an automated turret that includes an electromagnetic pulse weapon to supplement its [[Machine gun|heavy machine gun]].{{Ref/Game|H4|Autoturret in-game unit}} The UNSC fields several examples of munitions fired by handheld weapons capable of emitting electromagnetic pulses, including the XM20 EMP grenade of the [[M319 grenade launcher]] and [[M460 automatic grenade launcher]],{{Ref/Book|Id=Enc22P178|Enc22|Page=178}} as well as the EMP variant of the [[9X-G Gyroc rocket]] fired by the [[Echidna]] [[MLRS-1 Hydra]].{{Ref/Site|Id=universeHyrda|URL=https://www.halowaypoint.com/en-us/universe/weapons/hydra-launcher|Site=Halo Waypoint|Page=Hydra Launcher|D=01|M=01|Y=2024}} At least two variants of EMP hand grenade are in service with the UNSC: the [[scramble grenade]]{{Ref/Novel|Id=HLL172GP|HLL|Page=172|Detail=Google Play edition}} and the [[stun grenade]].{{Ref/Game|Id=HSSGameplay|HSS|Gameplay}}

[[Squad]]s of [[Orbital Drop Shock Troopers]] have been known to incorporate electronic warfare specialists as part of their team composition.{{Ref/Game|Id=PLQuinn|HW2|Phoenix Logs|Detail=Warrant Officer Quinn}} Militaries such as the [[Militia of Mesra]] maintained dedicated electronic warfare squads within their [[battalion]]s.{{Ref/Novel|Id=HO2|Oblv|Chapter=2}} As another form of dedicated electronic warfare personnel, human factions regularly make use of [[Smart AI|volitional]] and [[Dumb AI|nonvolitional]] [[artificial intelligence]]s, which by default function as electronic warfare technology due to their digital nature. Some AI, such as [[Cortana]], are created with electronic warfare specifically in mind, possessing greater than average intrusion and code-breaking capabilities.{{Ref/Novel|Id=HTFOR25|HTFoR|Chapter=25}}{{Ref/Novel|Id=HTFOR27|HTFoR|Chapter=27}}

===Covenant usage===
[[File:Stealth pylon.jpg|thumb|right|300px|An active Covenant stealth pylon at [[Szurdok Ridge]], [[Reach]].]]
While engaged in terrestrial combat, the Covenant and its remnants have been observed utilizing several forms of electronic warfare technology. The [[Covenant communications jammer|communications jammer]] is one such technology, placed onto the battlefield to disrupt enemy [[COM]] frequencies, preventing long-ranged communications in the region.{{Ref/Level|Id=HRNA|HR|Reach:New Alexandria|New Alexandria}} During planetary invasions, the Covenant may use [[stealth pylon]]s to hide their forces from long-range sensors.{{Ref/Level|Id=HR|HR|Reach:Nightfall|Nightfall}} Some Covenant atmospheric craft have been known to utilize active camouflage technology for stealth missions. These include the {{Pattern|Ru'swum|Phantom}} and the [[Klavbrig Workshop Shroud]]. While the former is only capable of cloaking itself,{{Ref/Level|Id=H3Covenant|H3|H3:The Covenant|The Covenant}} the latter can generate a localized cloaking field to hide nearby troops, vehicles, and other ordnance.{{Ref/Game|Id=PLShroud|HW2|Phoenix Logs|Detail=Shroud}} The {{Pattern|Bkowe'nei|Vampire}} features a [[stasis cannon]], which functions as an electromagnetic pulse weapon. When targeted by a Vampire's stasis canon, the drive systems of enemy aircraft often fail, resulting in a deadly free fall.{{Ref/Book|Id=Enc22P289|Enc22|Page=289}}

In the Covenant military, a "[[point]]" is a small grouping of specialists not under the command of an [[obedientiary]], tasked with electronic warfare, reconnaissance, or communications proxies.{{Ref/Book|Id=Enc22P239|Enc22|Page=239}} Several ranks of soldiers and roles within the Covenant and its remnants are known to utilize personal active camouflage systems. These include [[Arbiter]]s,{{Ref/Reuse|H2Arbiter}} [[Special Operations Officer]]s,{{Ref/Level|Id=H2Arbiter|H2|H2:The Arbiter|The Arbiter}} [[Special Operations Unggoy]],{{Ref/Reuse|H2Arbiter}} [[Stealth Sangheili]],{{Ref/Level|Id=H2Cairo|H2|H2:Cairo Station|Cairo Station}} [[Sangheili Zealot]]s,{{Ref/Level|Id=TipOfTheSpear|HR|Reach:Tip of the Spear|Tip of the Spear}} [[Silent Shadow]],{{Ref/Reuse|motioncomic}} and [[Jiralhanae Stalker]]s,{{Ref/Game|ODST|gameplay}} among others. One specific active camouflage device used by the Covenant was the [[Type-3 active camouflage]].{{Ref/Site|Id=universe|URL=https://www.halowaypoint.com/en-us/universe/weapons/active-camouflage|Site=Halo Waypoint|Page=Active Camouflage|D=27|M=10|Y=2015}} The personal active camouflage technologies utilized by the Covenant greatly reduce the visibility of the wearer while active by bending light around them, rendering the wearer's silhouette transparent.{{Ref/Book|Id=h4evgp136|H4EVG|Page=136}} Another feature incorporated into some Covenant infantry armor is the [[Type-27 hologram|Type-27 Responsive Holographic Form Emulator]]. Utilized most commonly by [[Skirmisher]] [[Skirmisher Champion|Champion]]s and [[Skirmisher Commando|Commando]]s,{{Ref/Game|Id=Champion|HR|[[Skirmisher Champion]] in-game unit}}{{Ref/Game|Id=Commando|HR|[[Skirmisher Commando]] in-game unit}} this technology user to create a [[Holography|holographic]] copy of themselves and then command it to move to a certain location to deceive enemy personnel and sensors.{{Ref/Reuse|H4VGHolo}}{{Ref/Reuse|h4site}}

[[File:HEvol - Elite SpecOps Sword.png|thumb|left|300px|Two Silent Shadow Sangheili utilizing active camouflage in combat.]]
The Covenant has fielded a variety of handheld weapons and devices with electronic warfare uses. Perhaps the most prolific of these are the various models of [[plasma pistol]], which generally feature an alternative firing mode that fires a single overcharged burst of [[plasma]] with EMP properties capable of disabling energy shielding and armored vehicles.{{Ref/Book|Id=Enc22P291|Enc22|Page=291}} Some {{Pattern|Anskum|plasma grenade}}s have be seen to emit an electromagnetic pulse when detonated as well.{{Ref/Novel|Id=HFS89|HFS|Page=89}} During the final weeks of the Human-Covenant War, [[Jiralhanae]] forces loyal to the [[Prophet of Truth]] utilized several hand-deployed pieces of electronic warfare [[equipment]] including the [[power drain]] and [[radar jammer]]. The former emits a localized EMP when active, disabling nearby energy shields and vehicles while the latter is designed to trick enemy [[motion tracker]]s by emitting false-positive radio waves.{{Ref/Book|Id=Enc09P343|Enc09|Page=343}} In a manner similar to the UNSC's armor restraint, the Covenant has fielded a "[[shock device]]" capable of rendering MJOLNIR armor immobile via a powerful energy pulse.{{Ref/Comic|Id=HE11|HE|Issue=11}} The Covenant has also been known to weaponize [[stasis field]]s. During his tenure as Arbiter, [[Ripa 'Moramee]] was granted unrestricted access to experimental stasis weaponry such as [[stasis mine]]s.{{Ref/Game|Id=PLRipa|HW2|Phoenix Logs|Detail=Ripa 'Moramee}} In addition to utilizing cloaking technology, these mines utilize energy fields that envelope enemy forces when triggered, stunning and immobilizing them.{{Ref/Game|HW2|[[Ripa 'Moramee|The Arbiter]] - [[Leader]] power|Detail=Stasis Mine|Quote=Activate to deploy mines that stun and immobilize enemy units.}}

In contrast to humanity's regular use of artificial intelligences in cyberwarfare and intrusion roles, the Covenant considered AIs to be dangerous and vile heresies,{{Ref/Book|Id=Enc22P217|Enc22|Page=217}} citing [[Mendicant Bias|a particular AI]]'s betrayal of the Forerunners.{{Ref/Novel|Id=CH12|CH|Chapter=12}} However, due to their systems' vulnerabilities to incursion by human AIs, the Covenant unvaulted counter-intrusion constructs such as the "[[Seeker (AI)|Seeker]]" in an attempt to combat this issue. Created in ages long past, these constructs are much less sophisticated than their human-made counterparts. On one occasion, the Covenant managed to capture [[Ascendant Justice's AI|a human AI]] and attempted to isolate and convert the machine. This only resulted in a hostile, enslaved mind that managed to escape, replicating itself across many Covenant facilities and vessels.{{Ref/Reuse|Enc22P217}}

===Banished usage===
[[File:HW2 Blitz Prowling Reaver.png|thumb|right|250px|A Prowling Reaver activating its active camouflage.]]
With much of their hardware sourced from the defunct interstellar empire, the Banished share many of their terrestrial electronic warfare technologies with the Covenant. When establishing [[Banished outpost|outpost]]s on a battlefield, the Banished utilize multiple types of structures specializing in electronic warfare. These include [[Sensor Tower|sensor tower]]s, structures that can detect nearby forces that would otherwise be hidden by active camouflage.{{Ref/Book|Id=Enc22P443|Enc22|Page=443}}{{Ref/Game|Id=PLSensorTower|HW2|Phoenix Logs|Detail=Sensor Tower}} Also included in this list are the [[cloaking generator]]s, devices reverse-engineered from Covenant stealth pylons and capable of concealing entire Banished outposts from view.{{Ref/Reuse|Enc22P443}}{{Ref/Game|Id=PLCloakingGen|HW2|Phoenix Logs|Detail=Cloaking Generator}} On one [[Battle of Netherop (2559)|occasion]], a cloaking generator was used to hide [[Hammer of Fate|a drekar]] and four [[karve]]s on the surface of one of [[Netherop]]'s [[Natural satellite|moon]]s.{{Ref/Reuse|Out6}} The Banished have been known to deploy [[disruption emitter]]s in combat, devices similar in use to the UNSC's XGBU-302 bomb that emit an electromagnetic pulse to disable nearby electronics.{{Ref/Level|HW2|Section=Halo Wars 2: Awakening the Nightmare|SectionLinkText=Awakening the Nightmare|HW2:What Could Go Wrong?|What Could Go Wrong?}}

Like the Covenant before it, the Banished utilize several vehicles that incorporate electronic warfare technologies. The Banished procured a number of Klavbrig Workshop Shrouds from the Covenant's stores, often utilizing the vehicles' cloaking abilities to conceal raiding parties.{{Ref/Reuse|PLShroud}} Occasionally, the Banished has been known to upgrade existing vehicles with personal cloaking generators, such as with the [[Prowling Marauder|"prowling"]] [[Prowling Reaver|variants]] of the [[Eklon'Dal Workshop Marauder]] and [[Dovotaa Workshop Reaver]].{{Ref/Game|Id=HW2Prowling|HW2|[[Prowling Marauder]] and [[Prowling Reaver]] in-game units}}

The Banished field infantry units with personal active camouflage on a scale similar to that of the Covenant, remaining a technology that is primarily utilized by Sangheili. Banished Special Operations Sangheili, [[Sangheili Warlord]]s, [[Evocati|Sangheili Ultra]]s,{{Ref/Game|Id=HIgame|HINF|Campaign gameplay}} [[Honor Guard]] Sangheili,{{Ref/Game|Id=HonorGuard|HW2|[[Honor Guard]] in-game unit}} and [[Unggoy Prowling|certain]] Unggoy are outfitted with personal active camouflage.{{Ref/Game|Id=ProwlUnggoy|HW2|[[Unggoy Prowling]] in-game unit}} Several Silent Shadow Sangheili—such as [[Inslaan 'Gadogai]] and [[Jega 'Rdomnai]]—are known to have joined the Banished as well,{{Ref/Book|Id=Enc2P459|Enc22|Page=459}}{{Ref/Book|Id=Enc2P454|Enc22|Page=454}} with at least the latter continuing to use active camouflage in combat.{{Ref/Level|Id=HoR|HINF|Level=House of Reckoning}} Another form of infantry-portable electronic warfare technology utilized by the Banished is the [[Threat Seeker]], a device which can reveal the position of enemies hidden from view—functionality similar to the UNSC's Threat Sensor.{{Ref/Site|Id=CFShocks|URL=https://www.halowaypoint.com/news/canon-fodder-system-shocks|Site=Halo Waypoint|Page=Canon Fodder - System Shocks|D=13|M=1|Y=2024}}{{Ref/Site|Id=S4Sandbox|URL=https://www.halowaypoint.com/news/sandbox-overview-season-4|Site=Halo Waypoint|Page=SANDBOX OVERVIEW <nowiki>|</nowiki> SEASON 4|D=13|M=1|Y=2024}}

[[File:HINF DynoVsGhost.png|thumb|left|250px|A dynamo grenade disables a [[Riuctda Workshop Ghost]].]]
[[Voltaic weaponry]] makes up the majority of the Banished's infantry-portable electronic warfare weapons. These weapons have their origin in Jiralhanae conflicts prior to the species' induction into the Covenant and [[Atriox]] himself commissioned [[Sicatt Workshop]]'s [[Alchemy Corps]] to harness these technologies.{{Ref/Reuse|CFBloodMoon}} The [[Sicatt Workshop shock rifle]] is a directed energy [[Sniper rifle (disambiguation)|sniper rifle]] that fires a burst of electrolasers capable of disabling energy shielding and vehicles, as well as playing havoc with MJOLNIR armor systems.{{Ref/Novel|Id=SOR19|HSoR|Chapter=19}}{{Ref/Book|Id=Enc2P477|Enc22|Page=477}} The [[Sicatt Workshop Disruptor]] is an automatic [[pistol]] that fires bolts that attach themselves to targets and unload powerful surges of electrical current capable of incapacitating enemy infantry and disabling vehicles and equipment.{{Ref/Reuse|Enc2P477}} Finally, the [[Sicatt Workshop dynamo grenade]] is a voltaic grenade that unleashes waves of electricity into targets within its radius of effect, immobilizing infantry and disabling electronics such as energy shields and vehicles,{{Ref/Book|Id=Enc22P483|Enc22|Page=483}} much like the power drain utilized by Covenant Jiralhanae.{{Ref/Reuse|Enc09P343}} Additionally, several variants of Banished [[plasma mine]]s utilize cloaking technology to avoid detection by enemy forces.{{Ref/Game|HW2|Id=plasmamine|[[Atriox]] - [[Leader]] power|Detail=Plasma Mines|Quote=Activate to drop a line of cloaked mines. Once armed, mines explode on contact. Does not damage air units.}}{{Ref/Game|HW2|[[Let 'Volir|Shipmaster]] - Leader power|Detail=Scout Mine|Quote=Activate to drop a cloaked Scout Mine. Explodes on contact, also provides vision within a small area.}}

While the Banished is not known to have the capability to produce artificial intelligences, at least one volitional AI by the name of [[Iratus]] came into their possession. Created by the human technology firm [[Lux Voluspa]] using a Jiralhanae brain as part of research into the concept of non-human donors for volitional AI, the Banished managed to steal Iratus via a cyberwarfare attack.{{Ref/Site|Id=S2StoryHub|URL=https://www.halowaypoint.com/halo-infinite|Site=Halo Waypoint|Page=Halo Infinite|D=06|M=05|Y=2022|LocalArchive=Halo Infinite Story & Intel|Detail=Defunct page; available on linked archive only}}{{Ref/Generic|Id=LuxVoluspa|[[Halo Infinite Lux Voluspa]]}} Assigned to managed the Banished's shipbreaking operations on [[Camber]],{{Ref/Twitter|Id=IratusFF|Halo|1646899697448017922|Halo|Quote=Uniquely created using a Jiralhanae brain donor, Iratus oversaw Banished shipbreaking operations on Camber where Spartan Dinh would trap the AI in his neural interface while Spartan Eklund hijacked a Phantom to escape to the Avery J. Johnson Academy.|D=12|M=1|Y=2024}} Iratus was ultimately stolen again, this time by [[SPARTAN-IV program|Spartan]]s [[Hieu Dinh]] and [[Sigrid Eklund]]. Dinh was forced to insert Iratus into his [[neural interface]] and the Spartans took the AI to the [[Avery J. Johnson Academy of Military Science]].{{Ref/Reuse|S2StoryHub}} Iratus attempted to break Dinh by forcing him to relive painful memories of his past,{{Ref/Game|Id=EM|HI|Mindfall|Detail=Enemy Mind cinematic}} but the AI was ultimately removed from Dinh's interface and quarantined.{{Ref/Game|id=HIInter|HI|Interference}} However, he would break containment and begin to infect the armor and neural interfaces of the academy's trainees.{{Ref/Site|Id=S4Intel|URL=https://www.halowaypoint.com/news/infection-intel|Site=Halo Waypoint|Page=Halo Infinite - Infection Intel|D=29|M=06|Y=2023|LocalArchive=Halo Infinite Story & Intel}}

===Forerunner usage===
The Forerunners developed several advanced forms of electronic warfare technology for use in terrestrial combat. Perhaps most notably, the Forerunners commonly utilized [[baffler]]s and [[dazzler]]s to camouflage objects and areas that they wanted to remain hidden.{{Ref/Site|Id=CryptumGlossary|URL=http://halo.xbox.com/en-us/intel/related/text/cryptum-glossary/62e29c59-a3f9-4b63-af76-def71fda5459|Site=Halo Waypoint|Page=Cryptum Glossary|D=14|M=03|Y=2014|LocalArchive=Halo: Cryptum/Glossary}} The former technology utilizes geometric distortions for camouflage,{{Ref/Reuse|CryptumGlossary}} while the latter technology causes visual and auditory delusions for those within range of the device.{{Ref/Reuse|CryptumGlossary}}{{Ref/Novel|Id=Cry41|Cry|Page=41}}

[[File:HTMCC-H4 ChiefVsDidact 3.png|thumb|left|300px|The Ur-Didact holds [[John-117]] within a constraint field.]]
Several pieces of infantry-portable equipment and weaponry utilized by the Forerunners are known to incorporate electronic warfare functionality. The [[Z-5080 Promethean vision]] system allows the user to detect shapes and movement through solid barriers, even being capable identifying between friend and foe.{{Ref/Reuse|h4site}}{{Ref/Book|Id=H4EVG|H4EVG|Page=138}} The [[Z-400 splinter grenade]] features the ability to create an ionized lattice cloud that can disable vehicles in a manner similar to that of an EMP.{{Ref/Site|Id=WaypointSplinter|URL=https://www.halowaypoint.com/en-us/universe/weapons/splinter-grenade|Site=Halo Waypoint|Page=Splinter Grenade|D=13|M=04|Y=2016}}{{Ref/Book|Id=Enc22P395|Enc22|Page=395}} The Forerunners also utilized [[constraint field]]s to restrain individuals.{{Ref/Novel|Id=cryptum|Cry|Page=303-305}} [[Warrior-Servant]]s such as the [[Ur-Didact]] could manipulate these energy fields in a manner akin to [[Wikipedia:Telekinesis|telekinesis]].{{Ref/Level|Id=H4Forerunner|H4|H4:Forerunner|Forerunner}}

[[File:Enc22 MendicantBias.jpg|thumb|right|185px|A Contender-class ancilla, the most advanced form of Metarch.]]
The Forerunner utilized artificial intelligences—called [[ancilla]]—on a scale far surpassing humanity. Ancilla were a standard component of Forerunner [[Forerunner personal armor|personal armor]], interfacing directly with the wearer's mind. The ancilla stored and collated information recorded by the armor and the wearer's own sensory data, allowing both to be accessed later.{{Ref/Novel|Id=SilP41|Sil|Page=41}} In addition to their own stores of knowledge, a personal ancilla could connect to a network—such as that of a starship—and provide information for the wearer at will.{{Ref/Novel|Id=Cry107|Cry|Page=107}} However, the Forerunners' use of ancilla did not stop there. Across their [[ecumene]], trillions of sapient ancilla maintained innumerable aspects of Forerunner society. With few exceptions, every Forerunner was accompanied by a personal ancilla throughout their life. These ancilla served as advisors, teachers, recorders, and mediators to all Forerunner Information systems and the [[Domain]].{{Ref/Book|Id=Enc22P325|Enc22|Page=325}} The most notable classes of ancilla are [[monitor]]s: administrators, assistants, guards, and caretakers created to govern large facilities and oversee their processes,{{Ref/Book|Id=Enc22P371|Enc22|Page=371}} and [[Metarch-class ancilla|Metarch]]: hyper-advanced ancilla created to serve the [[Ecumene Council]], with the purpose of managing large swaths of the ecumene's operations.{{Ref/Site|URL=https://www.halowaypoint.com/news/the-new-halo-encyclopedia-is-out-today|Site=Halo Waypoint|Page=The New Halo Encyclopedia is Out Today|D=11|M=03|Y=2023}} Some Metarchs have even been tasked with coordinating entire war efforts.{{Ref/Novel|Id=p190|Pri|Page=190-192}}

The Forerunners also developed a technology for countering ancillas known as an [[AI suppressor]]. These devices were designed to deactivate [[ancilla]]s, capable of debriefing and transferring all the targeted ancilla's data.{{Ref/Novel|Id=Cry194|Cry|Page=194}} The suppressors could also be used to subsume the ancilla within a Forerunner's personal armor or to [[Physical restraints|physically restrain]] an individual, preventing the