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{{Status|Canon}}
{{Status|Canon}}
{{Convert|2.36|kg|lb}}<ref>'''[[Halo Encyclopedia (2009 edition)]]''', ''page 334''</ref>
{{Center|''Are you looking for the Halo 4 [[Type-3 active camouflage|version]]? For other uses, see [[Camouflage (disambiguation)]].''}}


[[File:H2A-Rtas&Arbiter.jpg|thumb|300px|[[Rtas 'Vadum]]ee wielding his {{Pattern|Pelosus|energy sword}}.]]
[[File:HCE Camo Sniper.jpg|thumb|250px|A [[Spartan-II|Spartan]] using active camouflage.]]
{{Quote|A noble and ancient weapon, wielded by the strongest of [[Sangheili]], requires great skill and bravery to use, and inspires fear in those who face its elegant plasma blade.|[[Supreme Commander]] [[Thel 'Vadam]]ee{{Ref/Game|H2|[[Halo 2 Limited Collector's Edition Manual]]}}}}
{{Quote|One of those [[Sangheili|things]] is inside, and it is ''invisible!''|Cadet [[Thomas Lasky]]{{Ref/Film|H4FUD|Episode=4}}}}
'''Active camouflage''' (often shortened to '''active camo''') refers to a broad range of optical [[camouflage]] technologies that conceal or cloak its user or an object from visual detection by rapidly adapting to its surroundings.{{Ref/Book|Id=enc11|Enc11|Page=355}}{{Ref/Book|Id=h4evg|H4EVG|Page=136}} Although active camouflage originated from the [[Covenant]]—also inherited and adapted by [[Covenant remnants|its remnants]]—similar technology was employed by the [[United Nations Space Command]], with personal ppactive camouflage being directly reverse-engineered from its Covenant counterpart.{{Ref/Reuse|enc11}}  


'''Energy swords''', sometimes known as '''plasma swords''',{{Ref/Book|[[Halo: Combat Evolved: Prima's Official Strategy Guide]]|Page=15}}{{Ref/Book|[[Halo 2: The Official Strategy Guide]]|Page=30}} are a class of one-handed melee weapons developed by the [[Covenant]] and inherited by [[Covenant remnants|its splinter factions]]. To their users, the [[Sangheili]], they are formally designated as '''fireblades'''.{{Ref/Book|Id=enc22p307|Enc22|Page=307}}{{Ref/Book|Id=enc22p484|Enc22|Page=482}} The [[Office of Naval Intelligence]] has typically [[Type classification system|type-classified]] encountered gravity hammer variants under the designation of the '''Type-1 Energy Weapon/Sword''' ('''T-1 EW/S''').{{Ref/Site|Id=bnet|URL=http://halo.bungie.net/projects/reach/article.aspx?ucc=ordnance&cid=25438|Site=Bungie.net|Page=Halo: Reach Ordnance Page|D=7|M=2|Y=2021}}{{Ref/Site|Id=waypoint11|URL=http://halo.xbox.com/en-us/intel/theuniverse/tech/gallery/energy-sword/87ebf6e2-3874-4e5c-8133-b72c20a46d7f|Site=Halo Waypoint|Page=Energy sword|D=21|M=9|Y=2011|LocalArchive=Archive:Halo_Waypoint/2009 to 2014/Universe/Weapons#Energy Sword}} Nicknames for the energy sword includes '''Katana''' and '''Kill Beam'''.{{Ref/Book|Id=enc11|Enc11|Page=348}}
Covenant active camouflage conceals by bending and refracting light around its surface.


==Overview==
[[texture buffer]] and [[photoreactive panel]]
[[File:HW2-Gravhammerimpact.png|thumb|350px|A Jiralhanae using his gravity hammer's impact to generate a pulse to repel the [[Flood]] during the [[Outbreak on Installation 00]].]]
===Design details===
{{Quote|One hit from that hammer and you ended up a puddle of bones and blood.|Private Aaron Landvik{{Ref/Game|HSA|[[Halo: Spartan Assault/Quotes|Pre-mission quotes]]}}}}
A gravity hammer typically consists of a two-meter long haft,{{Ref/Reuse|waypoint11}} a hammerhead, and a tungsten-alloy blade on the reverse side of the head.{{Ref/Reuse|bnet}}{{Ref/Book|Id=evg|EVG|Page=82}} A counterweight is attached to the bottom end of the haft.{{Ref/Book|Id=h4evg|H4EVG|Page=93}} A short-range shock-field-generating gravitational energy drive is integrated inside the head of the hammer,{{Ref/Reuse|enc11}}{{Ref/Site|Id=h4guide|URL=https://www.halowaypoint.com/en-us/halo4guide|Site=Halo Waypoint|Page=Halo 4 Interactive Guide - Covenant Weapons|D=27|M=03|Y=2014|LocalArchive=Halo 4 Interactive Guide#Covenant Weapons}} while the head's striking face is lined with repurposed Covenant gravitic impellers,{{Ref/Reuse|enc22p307}} which release a concussive force upon impact.{{Ref/Reuse|enc22p484}} Together, the devices allows the wielder to produce an area-of-effect kinetic pulse (of approximately 4.5 meters),{{Ref/Reuse|bnet}} which briefly displaces local gravity at the point of the hammer's impact with impressive knockback.{{Ref/Reuse|enc22p307}}{{Ref/Site|Id=stormsurge|URL=https://www.halowaypoint.com/en-us/news/canon-fodder-storm-surge|Site=Halo Waypoint|Page=Halo 5: Guardians - Hammer Storm - Gravity hammer|D=22|M=9|Y=2021}} The gravitational energy drive's effects allows the user to displace objects of greater weight or power than what a normal blow might do.{{Ref/Reuse|enc11}} The gravity drive can also manipulate localized energy fields,{{Ref/Reuse|h4evg}} allowing the ability to pull a target towards the wielder or push the target away,{{Ref/Level|H2|The Oracle}}{{Ref/Level|H2|Quarantine Zone}}{{Ref/Level|H2|The Great Journey}} However, the Jiralhanae's brutal nature, along with the increased damage from the impellers,{{Ref/Reuse|h4guide}} means that they often prefer to use the weapon in melee combat.{{Ref/Reuse|waypoint11}} Although [[human]]s first encountered the weapon in [[2526]],{{Ref/Reuse|waypoint15}} the exact mechanism by which the gravity hammer functions was still under investigation by [[United Nations Space Command]] in [[2552]].{{Ref/Reuse|bnet}}


===History===
==Personal active camouflage==
The gravity hammer evolved from traditional Jiralhanae-bladed war hammers,{{Ref/Reuse|enc22p307}} dating back to the war-totems wielded by war chieftains on [[Doisac]].{{Ref/Reuse|enc22p484}}{{Ref/Site|Id=waypoint15|URL=https://www.halowaypoint.com/en-us/universe/weapons/gravity-hammer|Site=Halo Waypoint|Page=Universe - Weapons - Gravity Hammer|D=16|M=04|Y=2021}} Within the Jiralhanae's barbaric culture, in addition to being a powerful weapon, the war hammers serve as the ultimate symbol of [[clan]] leadership,{{Ref/Reuse|evg}}{{Ref/Reuse|waypoint11}} taking on an almost religious significance among the Jiralhanae.{{Ref/Reuse|enc11}} The ceremonial hammer of a pack or a clan is only passed to another Jiralhanae if he can best his [[Jiralhanae Chieftain|chieftain]] in ceremonial combat; the mantle of leadership passes along with the weapon.{{Ref/Reuse|waypoint11}}
===Covenant usage===
===Human usage===


[[File:H2A - Tartarus with Rukt.jpg|thumb|250px|Tartarus holding the Fist of Rukt, with its modifications by the Covenant.]]
==Personal active camouflage==
Following the Jiralhanae's absorption into the Covenant hegemony in [[2492]],{{Ref/Reuse|waypoint11}} the war hammers were modified with [[Forerunner]] technology reverse-engineered by the Covenant.{{Ref/Reuse|enc22p307}}{{Ref/Reuse|enc22p484}}{{Ref/Reuse|stormsurge}} The first gravity hammer and the template for the standardized weapons of this type was the [[Fist of Rukt]], an ancestral war hammer of [[Maccabeus' clan]] which was upgraded with Covenant gravity technology after [[Tartarus]] was appointed the [[Chieftain of the Jiralhanae]] in the Covenant.{{Ref/Site|URL=https://www.halowaypoint.com/en-us/universe/weapons/fist-of-rukt|Site=Halo Waypoint|Page=Universe - Weapons - Fist of Rukt|D=18|M=09|Y=2021}} After Tartarus was  granted the Fist of Rukt, many minor chieftains commissioned similar weapons, with components of the ancestral hammers incorporated when possible.{{Ref/Reuse|waypoint15}} Over the course of the [[Human-Covenant War]], a variety of hammer variants were produced in workshops and war forges, sporting performance upgrades and individual stylistic tweaks.{{Ref/Reuse|enc22p307}} The gravity hammers inherited the war hammers' totemistic and ceremonial significance,{{Ref/Reuse|evg}} with wielders being expected to treat their gravity hammer with great care.{{Ref/Novel|CH|Page=258}} Furthermore, some hammer have been aesthetically-tailored to the use of specific clans, families, or packs,{{Ref/Reuse|waypoint11}} resulting in numerous variants. During his rise to power within the Covenant, Tartarus used his relationship with the [[San'Shyuum]] to reward loyal lieutenants with similarly-advanced hammers secretly forged within the [[Sacred Promissory]].{{Ref/Site|Id=closequarters|URL=https://www.halowaypoint.com/en-us/news/canon-fodder-close-quarters|Site=Halo Waypoint|Page=Canon Fodder - Close Quarters|D=17|M=10|Y=2021}}
===Covenant usage===
===Human usage===
----


In [[2552]], only a few months before the [[Great Schism]] and the [[Fall of High Charity|Fall]] of ''[[High Charity]]'', the Sacred Promissory began producing gravity hammers en masse.{{Ref/Reuse|evg}} Following the dissolution of the Covenant, the [[Banished]] seized the design templates for nearly all Covenant gravity hammer variants. The Banished contracted war-forges to reproduce and modify existing designs or create new variants, with the number of variants being employed reaching upwards of 50.{{Ref/Reuse|enc22p484}}
Both the [[United Nations Space Command|UNSC]]<ref name="goo">'''[[Halo: Ghosts of Onyx]]''', ''page 291''</ref> and the [[Covenant]] use various forms of active camouflage technology, though the term is .


===Usage===
Technically, active camouflage is not quite invisibility, though it is very similar. Rather, the There are a variety of ways to do this, though the UNSC uses [[photoreactive panel]]s on its [[Semi-Powered Infiltration armor]] and [[prowler]] stealth ships for optical camouflage, adapting to the object's background to account for movement. Meanwhile, Covenant active camouflage actually ''bends light'' around the camouflaged object,<ref name="h4evg">'''[[Halo 4: The Essential Visual Guide]]''', ''page 136''</ref> a task well within the Covenant's [[Technological Achievement Tiers|tier two technology level]]. The technology can be utilized on human armor systems, such as the [[MJOLNIR Powered Assault Armor|MJOLNIR armor]], but the UNSC has only developed rough equivalents.<ref>'''[[Halo: The Fall of Reach]]'''</ref>
{{Quote|no=three
|1=Avery Johnson
|q1=[[Paegaas Workshop Spiker|Heavy pistols]], and a hammer.
|2=Ponder
|q2=Say again?
|3=Avery Johnson
|q3=A giant hammer, sir. On [[Maccabeus|their leader]].
|4=[[Avery Johnson]] describing [[Maccabeus]] with the Fist of Rukt, to [[Ponder]]{{Ref/Novel|CH|Page=245}}}}
The gravity hammer serves dual purposes as a weapon as well as a defining ceremonial vestige of clan leadership, and is thus typically wielded by a chieftain or other high-ranking members.{{Ref/Reuse|waypoint11}} Within the Covenant, the gravity hammers were commonly seen wielded by Chieftains.{{Ref/Game|H3|Gameplay}}{{Ref/Game|H3ODST|Gameplay}}{{Ref/Game|HR|Gameplay}} Within the Banished, the gravity hammer was a much more common sight,{{Ref/Level|HW2|The Signal}}{{Ref/Level|HW2|What Could Go Wrong?}} notably being used by [[Jiralhanae Warlord]]s and [[Jiralhanae Jumper]]s.{{Ref/Game|HW2|Gameplay}} The variants with most widespread use among the Banished includes the Sepulo'ez, Halbashi, and Akelas variants.{{Ref/Reuse|enc22p484}}


==Variants==
==Covenant active camouflage==
During the Jiralhanae's alliance within the Covenant, numerous designs of gravity hammers were developed.{{Ref/Reuse|enc22p307}}
{{Quote|Show yourselves, assassins! The scent of your cloak is faint, but it still fouls the air.|[[Atriox]] smelling active camouflage.<ref name="HP">'''[[Hunting Party]]'''</ref>}}
*'''Akelas Workshop gravity hammer''': A variant used by the Covenant and the Banished, with a notable wielder being [[Chieftain]] [[Avitus]].{{Ref/Reuse|enc22p484}}
[[File:HCE Stealth Elite in AC.png|thumb|200px|A camouflaged [[Stealth Sangheili]] aboard ''[[Cairo Station (station)|Cairo Station]]''.]]
*'''[[Akelus Workshop gravity hammer]]''': A variant used by [[Jiralhanae Chieftain]]s in the Covenant during the [[Battle for Earth]] and the [[Battle of Installation 00]].{{Ref/Reuse|enc22p307}}
Covenant active camouflage technology uses a field of energy to bend light around the user, thus making them effectively invisible. The armor used by [[Special Operations Sangheili|Spec-Ops]] and [[Stealth Sangheili]], as well as that of [[Arbiter]]s, [[Jiralhanae Stalker]]s and even certain [[Sangheili Zealot]]s,<ref name="ReferenceA">'''Halo: Reach''', campaign level ''[[Tip of the Spear]]''</ref> include built-in active camouflage generators. These built-in generators have a severe drawback in that they divert power from shielding equipment. Troops equipped with permanent active camouflage generators tend to have weaker shielding than those not equipped with an active camouflage generator.
*'''Eektah-fel siphon hammer''': A variant used by some Banished Jiralhanae Warlords.{{Ref/Game|Id=PLH|HW2|[[Phoenix Logs#Banished Units|Phoenix Logs - Warlord]]}}{{Ref/Site|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=23|M=1|Y=2021}}
**'''[[Voridus]]' gravity hammer''': A variant only wielded by [[Voridus]] who added [[Infusion gel]] to leave puddles or pools of Infusion on impact.{{Ref/Game|HW2|Voridus in-game unit}}
*'''Halbashi Workshop gravity hammer''': A variant of the gravity hammer used by the [[Banished]] during the [[Battle for Zeta Halo]].{{Ref/Game|Id=HINF|HI|Gameplay}}{{Ref/Reuse|enc22p307}}
**'''[[Rushdown Hammer]]''': A variant that has been painted white and gives the user increased speed. One notable wielder being [[En'Geddon]] during the [[Battle for Zeta Halo]].{{Ref/Reuse|HINF}}
*'''[[Paegaas Workshop gravity hammer]]''': A variant used by the Jiralhanae in the Covenant during the [[Fall of Reach]],{{Ref/Reuse|enc22p484}} then Banished [[Jiralhanae Warlord]]s and [[Jiralhanae Jumper]]s during the [[Second Ark Conflict]].{{Ref/Game|HW2|In-game model}} Models recovered from the field were used by [[SPARTAN-IV program|Spartan-IVs]] in [[War Games]] simulations.{{Ref/Reuse|h4guide}}{{Ref/Game|H4|Gameplay}}
*'''[[Sepulo'tez Workshop gravity hammer]]''': A variant used by Spartan-IVs in War Games simulations.{{Ref/Reuse|enc22p307}}
**'''[[Corpsemaker]]''': An improved variant with faster swing time and additional energy capacity, made from the finest materials its creator could coerce or steal from raider lairs on [[Warial]] and [[Teash]].{{Ref/Site|Id=nofake|URL=https://www.halowaypoint.com/en-us/news/canon-fodder-no-joke|Site=Halo Waypoint|Page=Canon Fodder - No Joke|D=13|M=11|Y=2020}}
**'''[[Grinder]]''': An improved variant with uncalibrated impellors that generate an unstable gravimetric vortex EMP at the point of impact.{{Ref/Reuse|nofake}}
**'''[[Tartarus' Gavel]]''': One of the many advanced variants secretly forged from the Sacred Promissory, with its creation tracing back to Tartarus, who used his relationship with the Prophets during his ascent to power within the Covenant to reward loyal lieutenants with advanced weaponry.{{Ref/Reuse|nofake}}
<gallery class=center>
File:Enc22-AkelasGravityHammer.png|Akelas Workshop gravity hammer.
File:H3-GravityHammer.png|[[Akelus Workshop gravity hammer]].
File:HW2 Siphon Hammer custom render.png|Eektah-fel siphon hammer.
File:HW2 Infused Hammer custom render.png|Voridus' unique gravity [[infusion gel]] hammer.
File:Enc22-HalbashiGravityHammer.png|Halbashi Workshop gravity hammer.
File:HINF En'Geddon.jpg|En'Geddon holding a Halbashi Rushdown Hammer.
File:H4-GravityHammer.png|[[Paegaas Workshop gravity hammer]].
File:H5 Gravity Hammer.png|[[Sepulo'tez Workshop gravity hammer]].
File:H5G-Corpsemaker render.png|[[Corpsemaker]].
File:H5G-Grinder render.png|[[Grinder]].
File:H5G-Tartarus Gavel render.png|[[Tartarus' Gavel]].
</gallery>


Arbiter [[Ripa 'Moramee]] was equipped with an active camouflage generator capable of generating a near-perfect cloaking field indefinitely. Arbiter [[Thel 'Vadam]] was also equipped with an active camouflage generator, but the device was capable only of providing a cloak for a few seconds, and although 'Vadam was equipped with personal shielding, his shields were relatively weak for an individual of such high rank, equivalent to those of a [[Sangheili Minor]].


Aircraft or ships can also be equipped with active camouflage systems, including the {{Pattern|Ru'swum|Phantom}} that has its own active camouflage generators on board for various stealth missions,<ref>'''Halo 3''', campaign level ''[[The Covenant (level)|The Covenant]]''</ref> and the [[Klavbrig Workshop Shroud]] used by the [[Banished]] to cloak the advance of their armies.<ref name="HW2">'''[[Halo Wars 2]]'''</ref> Larger vessels such as [[Covenant supercarrier|supercarriers]], or entire armies, can be effectively hidden from both plain sight and sensors by using external stealth systems such as [[stealth pylon]]s and [[Cloaking Generator]]s.{{Ref/Reuse|ReferenceA}}{{Ref/Reuse|HW2}}


For personnel not equipped with built-in active camouflage, it can be provided by a variety of devices. Typically, the energy used to provide the effect is suspended inside a small, transparent pyramidal container, or a larger spherical force-field. Personnel can use the light-bending energy by coming into physical contact with the container or force-field, which will cause it to break and release its contents. Upon release, the energy envelops the wearer and bends light around their skin; armor or [[energy shielding]], conforming to their form and rendering them almost invisible. After a short period of time, the energy will gradually dissipate and wear off, slowly revealing its user. The active camouflage provided by these devices lasts for ten seconds, and only prevents visual detection; those using active camouflage can be observed by other means, including motion tracking, noise, and environmental disturbances such as footprints on soft terrain.


The '''Type-1 Energy Weapon/Sword''' ('''T-1 EW/S'''), commonly known as the '''energy sword'''<ref name="BungieReach">[http://halo.bungie.net/projects/reach/article.aspx?ucc=ordnance&cid=25438 '''Bungie.net''' - ''Halo Reach Ordnance Guide: T1 EW/S'']</ref> or the '''plasma sword''',<ref>'''[[Halo: Combat Evolved: Prima's Official Strategy Guide]]''', ''page 15''</ref><ref>'''[[Halo 2: The Official Strategy Guide]]''', ''page 30''</ref> is a traditional [[Sangheili]] close-quarters weapon.<ref name="Waypoint">[http://halo.xbox.com/en-us/intel/featured/gallery/energy-sword/87ebf6e2-3874-4e5c-8133-b72c20a46d7f '''Halo Waypoint''' - ''Energy Sword''] [defunct] [https://web.archive.org/web/20110623004723/http://halo.xbox.com/en-us/intel/featured/gallery/energy-sword/87ebf6e2-3874-4e5c-8133-b72c20a46d7f (backup)]</ref> The energy sword is intended to express its owner's personal skill, clerical honor, and combat viability.{{Ref/Reuse|universe}}
===Function===
{{Quote|Trust me, because I heard… uhhh… from a friend, that if you have active camouflage on and do a crys, it makes a big sizzle sound and everybody can see me hidin' in the corner.|[[Dimkee Hotay]] shares his bad experience with active camo.<ref name="Alliance">'''[[Halo 5: Guardians]]''', campaign level ''[[Alliance]]''</ref>}}
Covenant active camouflage will easily cloak its user, but its effect does not completely extend to items in the user's possession; [[human]] [[weapons]] are easily cloaked by active camouflage, but Covenant weapons are visible even with active camo, as the light-bending energy cannot mask the glow of the weapons' plasma. In ''Halo: Combat Evolved'', however, plasma glow is hidden quite well by the cloaking equipment.


== Background ==
Though active camouflage is quite effective from a distance, it can faintly be seen if an observer is close enough to the wearer. However, it is difficult to spot a camouflaged opponent from a distance using a scoped weapon—actual physical proximity is required to reliably spot a person using active camo. It should be noted, though, that active camouflage does not mask environmental effects such as footprints, meaning that it is not as effective on soft terrain such as snow.
The energy sword is the signature weapon of the [[Sangheili]] and has been their chief weapon of nobility since its creation during one of the [[Ages of Discovery]].<ref>'''[http://nikon.bungie.org/misc/ancient_tablets/Tablet4.gif The Covenant Hall of Murals]'''</ref> The Sangheili pride themselves on their skills with the weapon,<ref>'''Halo Graphic Novel''' ''page 12 - 14''</ref> which they regard as holy,<ref name="enyc127">'''[[Halo Encyclopedia (2009 edition)]]''' ''page 127''</ref> and believe that it is better for a Sangheili to fall on his sword to redeem his honor than to die dishonorably.{{Ref/Reuse|enyc127}}<ref>'''Halo: The Cole Protocol''' ''page 53''</ref><ref>'''Halo: The Cole Protocol''' ''page 141''</ref> The Sangheili are very strict on who can be trained in the [[Martial arts|art of swordsmanship]]; in civilian life only [[aristocrat]]s are permitted to wield energy swords.<!-- Note that The Essential Visual Guide confirms that non-aristocratic use of the energy sword is forbidden only within civilian society. This policy is not upheld within the military.-->{{Ref/Reuse|essential}} Sword wielders are not eligible for marriage, though they may breed with any female they choose, married or otherwise, to ensure successful transmission of "swordsman" genes.{{Ref/Reuse|Waypoint}}<ref>'''[[Bestiarum]]''' ''Sangheili section''</ref>


Within the [[Covenant military]], use of the energy sword is not restricted to aristocrats.{{Ref/Reuse|essential}} [[Sangheili Minor]]s are generally not permitted to wield the sword because of the high regard in which it is held,{{Ref/Reuse|enyc127}} though exceptions have been witnessed.<ref>'''Halo Wars''', ''introductory cinematic''</ref><ref name="Package">'''Halo Legends''', ''The Package''</ref> It is unknown whether this extends to [[Sangheili Major|Majors]], as at least one has been witnessed using an energy sword.{{Ref/Reuse|Package}} [[Sangheili Storm|Storm troops]], [[Sangheili Ultra|Ultras]], [[Sangheili Zealot|Zealots]], [[Sangheili General|Generals]], [[Special Operations Sangheili|special operations]], [[Stealth Sangheili|stealth troops]], and [[Sangheili Honor Guardsman|honor guardsmen]] commonly use energy swords.
The shielding provided by Covenant active camo can be disrupted if projectiles pass through it; such a disruption weakens the invisibility effect and temporarily reveals the wearer. The [[power-up]] can be disrupted if the wearer fires shots or if the wearer is hit. It also progressively worsens: the longer the wearer fires (or is hit), the more visible they become. Once the disruptions end, however, the wearer quickly regains their invisibility.


== Design details ==
Talcum powder and other atmospheric particles can disrupt the systems, causing the technology to overload and fail.<ref name="firststrike">'''[[Halo: First Strike]]'''</ref> The device also generates a considerable amount of heat, causing its user to be clearly visible on human thermal goggles and some variations of the [[SRS99C-S2 AM sniper rifle]].<ref>'''[[Halo: The Flood]]'''</ref> The humans of [[Alpha Base (Installation 04)|Alpha Base]] on [[Installation 04]] used this advantage when their base was infiltrated by stealth Elites, equipping their [[fireteam]]s with infrared goggles allowing them to easily see the attackers. In addition, [[SPARTAN-II program|SPARTAN-IIs]] [[William-043]] and [[Kelly-087]] employed talcum powder in order to overload the camouflage on [[Reach]] in order to find them.{{Ref/Reuse|firststrike}} [[Atriox]] was able to detect the use of active camouflage through smell.{{Ref/Reuse|HP}} However, it is possible he was just smelling the users themselves rather than the cloaking field, and was calling them out for its use.
The energy sword's design is seen as the logical evolution of an ancient lineage of traditional Sangheili weapons, most notably the twin-scythe and the [[curveblade]];<ref name="H4EVG">'''[[Halo 4: The Essential Visual Guide]]''', ''page 92''</ref>{{Ref/Reuse|Waypoint}} superficially, the twin-scythe's influence on the energy sword's design is unmistakable.<ref>'''Halo Legends''': ''The Package''</ref> Technologically, the energy sword succeeded an older type of Sangheili sword known as the [[burnblade]], which was used in the early years of the Covenant.<ref>''Halo: Broken Circle'', pg. 115</ref> Modern energy swords are manufactured by the [[Merchants of Qikost]], a prominent group of arms makers from one of [[Sanghelios]]' [[Qikost|moons]].{{Ref/Reuse|essential}} The energy sword consists of a curved hilt, which houses an energy storage and generation device, as well as the blade projector; that forms a blade of superheated [[plasma]], stabilized by two small magnetic field generators built into the handle of the weapon—this forms and contains the oval shaped, ionized blades for which the weapon is recognized.{{Ref/Reuse|BungieReach}} The weapon is powered by a small battery that supplies power to the plasma generation device and magnetic field generators which generate and contain the plasma needed to form the blade.<ref name="enyc">'''[[Halo Encyclopedia (2009 edition)]]''' ''page 335''</ref> The battery's energy is reduced for each successful strike. Each strike from the sword will drain the battery by 10% of its maximum energy output. Once the battery power is fully depleted, the sword will deactivate unless recharged. The horizontal hilt forces the wielder to use a punching motion to stab rather than the thrusting motion of most knives and swords.


Mass-produced energy swords feature a roughly W-shaped hilt and have little variation in blade design. Specifically, some models have more rounded blades in lieu of the more common angular style. However, more drastic variations exist. For example, [[Arbiter]] [[Ripa 'Moramee]]'s matching pair of custom-designed<ref>'''Halo: The Essential Visual Guide''', ''page 10''</ref> swords had basket-style hilt guards and radiated a high degree of ionized plasma,<ref>'''Halo Wars'''</ref> whereas most energy swords contain the blades' plasma with greater efficiency. Some Sangheili special forces units wield blood red-colored energy swords which (ironically, despite their color) burn hotter than more common models.{{Ref/Reuse|Waypoint}}<ref name="headH">'''Halo: Evolutions''', ''Headhunters''</ref> Arbiter [[Thel 'Vadam]]'s personal sword, the [[Prophets' Bane]], was pale salmon-colored and had a wider blade compared to mass-produced swords.{{Ref/Reuse|CF}}<ref name="H5G">'''[[Halo 5: Guardians]]'''</ref>
During the [[Requiem Campaign]], active camouflage was used to shield the [[seven]] [[HAVOK tactical nuclear weapon]]s smuggled aboard the {{UNSCShip|Infinity}} from detection by the ship's AI [[Roland]]. After [[Fireteam Crimson]] took out a Sangheili holding a cloaking remote, Roland realized this tactic. By tracking the energy signature from the cloaking generator, Roland was able to locate the warheads in the Engine Room and direct Crimson where to go to disarm them before they could be used to destroy the ''Infinity''. Unlike conventional active camouflage, this type shielded the warheads from sensors but they could be physically seen by nearby persons without any issue.<ref>'''Spartan Ops''', [[S1/Invasion/Engine of Destruction|S107 ''Invasion'', ''Engine of Destruction'']]</ref> Later, in the [[Warrens]], the Covenant hooked up active camouflage to their shield generators to prevent the human forces from finding and destroying them. Spartan [[Jared Miller]] was eventually able to identify the Sangheili who controlled the active camouflage and after Crimson took him out, the active camouflage dropped, revealing the generators.<ref>'''Spartan Ops''', [[Expendable/Lancer|S108 ''Lancer'']]</ref>


Some energy swords contain a fail-safe mechanism that can permanently disable the weapon if the Sangheili wielding it drops it.<ref>'''Halo: First Strike''' ''page 74''</ref> When dropped, the failsafe engages by deactivating the magnetic field before dispersing the plasma. The plasma then consumes the handle and thus destroys the weapon.<ref>'''Halo: Combat Evolved'''</ref> The fail-safe is included to prevent enemy infantry from acquiring the weapon and using it, and gives insight to Sangheili tactics.
After the death of [[Gek 'Lhar]], his corpse was looted by [[Fireteam Majestic]]. Spartan [[Gabriel Thorne]] took Gek's active camouflage module<ref>'''Spartan Ops''', [[Expendable|S108 ''Expendable'']]</ref> which he subsequently used during the attempted rescue of Dr. [[Catherine Halsey]].<ref>'''Spartan Ops''', [[S1/Key|S109 ''Key'']]</ref>


Each energy sword is marked by its creator and first owner, but often their legacy is forgotten. The Pelosus-Pattern Blade was utilized by the original Covenant for the grand majority of their reign, and featured very minute alterations in design and function over the course of its tenure. With the dissolution of the Covenant following their defeat at the hands of the humans, the Pelosus blade would see diminishing use as the now-peaceful Sangheili parted ways with the humans on good terms. Later, with the rise of Jul 'Mdama's chapter of the Covenant, a new Domotos-Pattern Blade was instated as the new Covenant's energy blade. Though its usage was considerably more brief than its predecessor, and its design remained identical throughout it's reign. The Battle for Zeta Halo saw a third iteration, the Meluth'qelos-Pattern Blade developed and brandished by the combined forces of the Banished. Though its still young, it has already seen a fair degree of individual iteration, with two Banished Sangheili developing their own variants for personal use.
==UNSC active camouflage==
<ref name="LAL">[https://www.halowaypoint.com/en-us/news/canon-fodder-locke-load '''Halo Waypoint''' - ''Canon Fodder: Locke & Load'']</ref>
[[File:ONIPRO 01.png|thumb|250px|''[[ONI PRO-49776]]'' disengaging its advanced cloaking field, an outlier in UNSC camouflaging technology during the [[Covenant War]].]]
The UNSC has developed several varieties of active-camouflage technology. These do not utilize the same light-bending energy as Covenant active camouflage and are generally less effective. The most common form of human active camouflage technology operates on a different principle than the Covenant counterpart, using [[photoreactive panel]]s to impersonate the surrounding environment like a chameleon. A device known as the [[camouflage cloak]] can hide the wearer's infrared signature, beside serving as a form of camouflage.{{Ref/Reuse|goo}}
[[File:Headhunters Roland camo.jpg|thumb|250px|[[Roland-B210]] with his camouflage activated.]]
The [[Semi-Powered Infiltration armor]] used by the [[SPARTAN-III program|Spartan-IIIs]] utilizes photo-reactive panels to conceal the wearer's infrared signature and to blend in with the surrounding environment. When combined with their natural talent and training for stealth, it can be a very effective tool. Some [[Headhunters]] used a prototype camouflage almost identical to the Covenant version, rendering them almost invisible, except that it only lasted 3–5 minutes and other systems have their power drained while it recharged. This feature saw very limited use in field tests by [[Orbital Drop Shock Trooper|ODSTs]].<ref>'''[[Halo: Evolutions - Essential Tales of the Halo Universe]]''', ''[[Headhunters]]''</ref>


== Variants ==
A common human active camouflage device, copied from similar Covenant technology, comes in the form of a "plug" which attaches to a socket located on the lower back of compatible armor. The non-integral nature of the device allows it to be added or removed at will for improved operational flexibility. The device provides a conditionally effective cloak; as long as the user remains still or moves slowly, the camouflage will be highly efficient, providing near-total invisibility for minimal energy loss. However, if the user moves more quickly, the camouflage will only provide rudimentary coverage and drain its energy very rapidly. Firing a weapon will also disrupt the camouflage and reveal the user. Furthermore, external sounds will be highly muffled to the user while this camouflage is in use, and if the user is equipped with motion tracking equipment, the detection capability of the motion tracker will be severely compromised, jamming the display with "ghost" targets.<ref>'''[[Halo: Reach]]'''</ref>
*'''[[Bloodblade]]''' - A bloodblade is a red colored energy sword,{{Ref/Reuse|Id=MCCCanonFodderMay2021}}<ref name="BF">[https://www.halowaypoint.com/en-us/news/brute-force '''Halo Waypoint''' - ''Canon Fodder: Brute Force'']</ref> used by certain Special Operations Sangheili{{Ref/Reuse|universe}}{{Ref/Reuse|headH}} such as the [[Silent Shadow]].<ref>'''Halo: Tales from Slipspace''', ''Hunting Party''</ref>{{Ref/Reuse|Id=MCCCanonFodderMay2021}}
*'''[[Ravening Sliver]]''' - A blade with a deep blue hue and a green hilt. In War Games, this model can be swung faster than other energy swords.{{Ref/Reuse|H5G}}
*'''[[Vorpal Talon]]''' - A blade that produces an orange-to-cyan gradient. In War Games, this variant allows the user to have [[Spartan abilities|two thruster charges]] before recharging, as well as increased jump height, longer stabilizer duration of 4.95 seconds, increased lunge distance, and a built-in [[motion tracker]] that stays visible on the user's [[Heads-up display|HUD]] even while zoomed in, much like with [[Linda-058]]'s personal [[Nornfang]] [[SRS99-S5 AM sniper rifle]]. This weapon can also be found as the second [[special weapons|hidden weapon]] in the final campaign mission [[Guardians]].{{Ref/Reuse|H5G}}
*'''[[Prophets' Bane]]''' - [[Thel 'Vadam]]'s personal energy sword with a unique handle and pale salmon coloring. In War Games, it gives the wielder an increased lunge distance (the same as the Vorpal Talon), increased movement speed, and [[active camouflage]] as long as the weapon is active.{{Ref/Reuse|H5G}} 
*'''Mdama keep variant''' - Energy swords manufactured by Mdama keep in 2558 burned less intensely, thus making it harder to cut armor, but causing more grievous injuries and not cauterizing wounds. These swords took advantage of the Sangheili code of honor to make every wound a death blow, as Sangheili who wanted to retain their honor would often commit suicide.<ref name="Alliance">'''Halo 5: Guardians''', campaign level ''[[Alliance]]''</ref>
*'''Necroplasma''' - A necroplasma is a green colored Energy sword.{{Ref/Site|Id=MCCCanonFodderMay2021|D=21|M=5|Y=2021|URL=https://www.halowaypoint.com/en-us/news/art-of-wort|Site=Halo Waypoint|Page=News, Art of Wort Canon Fodder}} One version of the blade features a dull green blade that transitions to an inky black near the basket hilt and was used in War Games.{{Ref/Reuse|H5G}} One version was a solid green with a normal hilt.{{Ref/Reuse|Id=MCCCanonFodderMay2021}}
*'''Evocati's Edge''' - A white energy sword is associated with the [[Evocati]].{{Ref/Reuse|Id=MCCCanonFodderMay2021}}
*'''Light of Joori''' - A yellow energy sword, Light of Joori is named after the star [[Joori]].{{Ref/Reuse|Id=MCCCanonFodderMay2021}}
*'''Kaidon's Guard''' - An orange energy sword associated with the [[Swords of Sanghelios]].{{Ref/Reuse|Id=MCCCanonFodderMay2021}}
*'''Darkstar''' - A purple energy sword, seemingly associated with old [[Sangheili mythology]].{{Ref/Reuse|Id=MCCCanonFodderMay2021}}
*'''Lance of Suban''' - A pink energy sword infused with [[Blamite]]. The sword and the material originates from [[Suban]].{{Ref/Reuse|Id=MCCCanonFodderMay2021}}
*'''[[Duelist Energy Sword]]''' - A purplish-blue colored ''Meluth'qelos''-pattern energy sword with a white hilt. Has increased movement speed. It was used by [[Okro 'Vagaduun]] during [[Battle for Zeta Halo]].
*'''[[Ghostpierce]]''' - A highly specialized energy sword mounted on Banished operative Jega 'Rdomnai's prosthetic arm repaired at [[Cherras Keep]]. Like many, it was two-pronged but had a red coloration and a forked structure.
*'''''Zokotus''-pattern fireblade''' - An assymetrical energy sword, manufactured by the [[Merchants of Qikost]].{{Ref/Book|Enc22|Page=307}}
<gallery>
File:H2A Render EnergySword-Infected.png|A render of a bloodblade in ''Halo 2: Anniversary''.
File:H5G Render EnergySword-RaveningSliver.png|A render of Ravening Sliver.
File:H5G_VT_sword.png|Vorpal Talon.
File:H5G Prophets bane(clear version).png|Prophets' Bane.
File:H5G greensword.png|A Necroplasma sword
File:HINF Duelist Sword.png|A Duelist Energy Sword.
</gallery>


== Combat application ==
Much like the SPI armor, UNSC [[prowler]]s use [[texture buffer]]s or "active camouflage skin" in conjunction with [[stealth ablative coating]]s to conceal themselves from view in addition to masking their heat and radar signatures.{{Ref/Reuse|goo}} This camouflage is not perfect, however, and cannot keep up with a constantly changing background such as a gas giant's atmosphere.<ref>'''Halo: Evolutions - Essential Tales of the Halo Universe''', "The Impossible Life and the Possible Death of Preston J. Cole", ''page 477''</ref> However, more advanced stealth ships were developed, such as ''[[ONI PRO-49776]]'' using a form of cloak "bubble" similar to the light-bending energy fields used by the Covenant. This technology has not been observed in widespread use.<ref>'''[[Halo Legends]]''', ''[[The Package (animated short)|The Package]]''</ref>
=== Advantages ===
[[File:1221845548 Elites duel wielding energy swords.jpg|thumb|200px|right|[[Rtas 'Vadum]] and [[Kusovai]] dual-wielding energy swords while sparring.]]
The Type-1 energy sword is an extremely devastating and powerful melee weapon when applied during in close-quarters combat. A single strike can even penetrate the energy shield systems, armor, and flesh of a [[SPARTAN programs|Spartan]] or a Sangheili. This is due to the design of the weapon, which utilizes ionized gas rather than traditional shaped, solid matter—because the energy sword lacks any solid material in which to hold, or impale anything, the sword does not cut or carve in the traditional sense, but rather boils anything it comes into contact with.{{Ref/Reuse|enyc}} The Type-1 Energy Weapon's edge is therefore extremely volatile, being able to slice through even the toughest metals like a hot knife through butter, including ODST battle armor and the Titanium-A class plating of UNSC destroyers.<ref name="cole">'''Halo: The Cole Protocol''' ''page 84''</ref><ref>'''Halo: First Strike''', ''page 72''</ref>


Injuries caused by the weapon are often gruesome. Stab wounds by the energy sword are, in most cases, fatal — as the blade passes through the body, the organs and tissues are cauterized by the extreme temperatures produced by the blades.<ref>'''[[Halo: Evolutions]]''' - '''[[Midnight in the Heart of Midlothian]]''', ''page 91''</ref> Body fluids in the area of the stab wound are flash-vaporized upon contact; organs within the area of the stab wounds can suffer life-threatening damage dependent upon which organs are struck. The effects of fluids trapped in organs or arteries and the expansion of heat could lead to ruptures or small explosions, causing additional damage to the victim.
The [[MJOLNIR Powered Assault Armor (GEN2)|MJOLNIR Powered Assault Armor [GEN2]]] system is capable of incorporating Covenant [[Type-3 active camouflage|T-3 Refraction Dissonance Modifier/Camouflage]] modules for stealth.<ref name="Waypoint">[http://www.halowaypoint.com/en-US/Halo4Guide '''Halo Waypoint:''' ''Halo 4 Interactive Guide'']</ref>


Survival is minimal at best and in the case of non-lethal strikes being administered, proper medical treatment must be applied as soon as possible to ensure permanent survival. Because of the weapon's sheer destructive damage, common forms of fatality to victims include total impalement,<ref>'''[[Halo 4: Forward Unto Dawn]]'''</ref><ref>'''[[Halo Wars]]'''</ref><ref>'''[[Halo: The Cole Protocol]]''', ''page 77''</ref> loss of limbs,<ref>'''[[Halo: The Cole Protocol]]''', ''page 76''</ref> bodies being bisected<ref>'''[[Halo: First Strike]]''', ''page 58''</ref><ref>'''[[Halo: The Fall of Reach]]''' ''page 99''</ref> and decapitation.<ref>'''[[Halo: The Cole Protocol]]''', ''page 79''</ref>
==Changes throughout ''Halo''==
{{Cleanup|Section}}
If the active camo is active during [[Campaign]], the player is completely invisible to the AI enemies unless they fire their weapon. Active camouflage is only usable in Campaign when playing as the [[Thel 'Vadam|Arbiter]] in ''[[Halo 2]]'', or if the player obtains the [[Halo 2 skulls#Envy|Envy Skull]] and restarts Campaign (active camo replaces Master Chief's flashlight). In ''[[Halo 3]]'', rather than Active Camouflage, the slightly different [[Cloaking]] is available. It is also available as a powerup in five levels during ''[[Halo: Combat Evolved]]'': [[The Truth and Reconciliation]], [[Silent Cartographer]], [[343 Guilty Spark (level)|343 Guilty Spark]], [[Keyes]], and [[Assault on the Control Room]].


=== Disadvantages ===
An interesting fact about Active Camouflage is that although the player can see the [[Type-1 energy sword]]-wielding Active Camo Elites in ''Halo: Combat Evolved'' (due to the sword), the [[UNSC Marine Corps|Marines]] cannot see them; this is likely because the developers did not realize that the energy sword showed through the Active Camo, leading them to code the Marines' AI to be oblivious to it. This advantage is removed in ''Halo 2''—the Elites now wait, only activating their swords when they're about to kill the player.
The Type-1 Energy Weapon's most glaring downside is that it is purely a close-quarters weapon; any combat engagement outside of the effective range puts the wielder at risk. It is for this reason that the Sangheili approach sword combat on the battlefield in two different ways, by funneling the enemy into close-quarters to allow them to strike, and/ or to apply a form of stealth using both technology and technique. Without these, the user is vulnerable to attack by all forms of ranged attack, especially from sniper-based counterattacks. Infantry with Overshields are also more resistant when facing this weapon as it can take two strikes before the shield system fails and then another for the killing blow.


Furthermore, the Type-1 Energy Weapon is vulnerable to other magnetic fields, as they can block, disrupt, or possibly even alter the functionality of the sword. Two energy blades clashing together create a small disruption of energy as a result of the same type of magnetic fields clashing together; this clash has a slight area of effect damage that can affect the combatants.
===''Halo 2''===
In ''Halo 2'', it is noted that the Arbiter's armor, while possessing a built-in active camouflage generator, is not permanent, unlike the more modern generators used by Special Operations Elites. There is a circle on the player's HUD that shows the amount of time left (unfortunately, not shown numerically) for both the usage of the active camouflage and the recharging sequence. The Master Chief can gain this ability with the Envy Skull on Legendary only; however, his screen will lack the meter, forcing you to remember the time allowed for use.


As with most other Covenant weapons, the Type-1 Energy Weapon is battery powered, requiring the user to either recharge the weapon (which can never be performed in-game) or discard it when the power is depleted. Although the handle can generally be used as a club, the Energy Sword's combat effectiveness at that point is minimal. The strength and lethality of the sword in the games are compensated for the sake of gameplay.
When playing as the Arbiter, using any attack will cause the active camouflage to deactivate, and the player must wait for it to recharge before using it again.<ref>'''[[Halo 2]]'''</ref>


Last but not least, the Type-1 Energy Weapon can sometimes expose the position of a Sangheili warrior employing active camouflage due to the weapon's energy output.
===''Halo 3''===
{{Main|Cloaking}}
In ''Halo 3'', the Active Camo is no longer contained inside a pyramid construct. Instead it appears as a large, glowing sphere with what appears to be containment devices around it, enclosing the powerup in ''[[Halo 3]]'' [[multiplayer]]; but unlike past Halo games, active camo is ''not'' found in campaign. In campaign, Active Camouflage is replaced by the [[Cloaking]] [[equipment]], which functions in the same way as active camouflage once did. Melee attacks, shooting, throwing grenades and using equipment will negate the effect of the power-up. Also, wearing the [[Armor customization (Halo 3)#Spartan Armor Permutations|Flaming Helmet]] is an obvious give-away to the opponent because the fire is still visible.
By default, the pick-up lasts 30 seconds and doesn't dissipate with movement, unlike in Reach.


== Gameplay changes ==
The quality of camouflage in custom games may be set to two different settings:<ref>[http://www.gametrailers.com/player/20131.html '''Game Trailers''': ''Custom Games Glitch Gameplay'']</ref>
{{Linkbox|gameplay=yes}}
*'''Poor Camo''': The player has camouflage that might fool a [[Unggoy|Grunt]].
=== Changes from ''Halo: Combat Evolved'' to ''Halo 2'' ===
**The player is still somewhat visible.
[[File:Sword.jpg|thumb|right|150px|A blueprint of the energy sword in ''Halo 2''.]]
*'''Good Camo''': The player has camouflage that will fool an attentive [[Sangheili|Elite]].
In ''Halo: Combat Evolved'', the energy sword has a cyan glow, a far less defined edge and makes a dull clunk when striking an object. It is only used by Stealth Sangheili and Zealots. The player cannot wield the energy sword, due to a fail-safe mechanism that vaporizes the weapon when it is not released properly (e.g. being dropped upon death) by the sword-wielder.
**This makes the player almost invisible, but the light is distorted within the player's shape.


In ''Halo 2'', the energy sword is blue with purple undertones, with electrical energy crackling on it when the blade is activated. The white glow seen in ''Halo: Combat Evolved'' is also replaced with a more glass-like transparency. In the campaign, it is only used by higher-ranking Sangheili, such as special operations units, [[Sangheili Ultra|Ultras]] and [[Zealots]], though players can now wield the sword. The sword in campaign has a battery and can only be used effectively against a limited number of enemy forces before the battery runs out. The sword is usable in multiplayer with an infinite battery power. The energy sword has two modes of attacking; a lunge attack and a swing attack.
===''Halo: Reach''===
{{Clear}}
The Active Camo in ''[[Halo: Reach]]'' has undergone many major changes. It is now available as an [[Armor abilities|Armor Ability]] to both Spartan and Elite players. As a secondary effect, when used, it acts as a Radar Jammer, scrambling the radar of the user and all enemies within 25 meters, making the user harder for enemies to detect on their motion trackers. This function can be both beneficial and detrimental to the player; on the one hand, it can make enemies easier to ambush, however, it also informs the enemy team that someone is using Camo nearby. This can backfire on the player by making the enemy team more perceptive to possible ambushes. The Active Camo also greatly reduces the volume of all sounds for its user, making it more difficult to notice a grenade being thrown or a nearby enemy firing a weapon.


=== Changes from ''Halo 2'' to ''Halo 3'' ===
The strength or effectiveness of the Camo also varies depending on whether/how fast the user is moving. When standing still, the player is rendered almost completely invisible. Moving slowly or crouch-walking will slightly decrease the quality of cloaking, although the user is still hard to spot. When moving faster than crouch-walking speed, the Active Camo becomes much less effective, cloaking the user only partially (similar to the Poor Camo from Halo 3). The player's movement speed does not affect the rate at which the Armor Ability meter drains.  
[[File:ReachSchematic - Sword.png|right|150px|thumb|A blueprint of the energy sword in ''Halo 3''.]]
The freedom for the player to control when they activate their camouflage makes it much more effective, as it allows for use in the most opportune situations, instead of restricting the player to activate it on pickup. However, the reduced hearing and radar jamming effects require the player to be more aware of his surroundings than usual,<ref>[http://halo.bungie.net/News/content.aspx?type=topnews&cid=26366 '''Bungie.net''': ''Halo: Reach Beta Survival Guide '']</ref> and must also take care not to move too fast.
In ''Halo 3'', the sword has more of a light cyan tinge, similar to its appearance in ''Halo: Combat Evolved'', but still has a tint of purple near the handle. It also has an angle near the handle, whereas in the two previous games it was curved. Players are now able to parry with the Sword. The power exerted by the swords hitting each other will drain both players' shields, but will not kill them unless one makes the fatal blow. The sword's lunge attack has been reduced for balancing purposes. Aside from these changes in design and functionality, the power of the sword remains unchanged. In multiplayer, the sword now has a limited battery supply.
{{Clear}}


=== Changes from ''Halo 3'' to ''Halo: Reach'' ===
Enemies in campaign and Firefight will detect the user after a while. As such, it is far less effective than previous iterations.
In ''Halo: Reach'', the sword is now darker in color. When activated, it is capable of lighting up the surrounding area. When unused, the sword rests differently on the SPARTAN and Sangheili character models. The energy sword appears to have been balanced out compared with its earlier incarnations, having a slightly faster swing than its ''[[Halo 3]]'' incarnation, its lunge attack now does the same damage as a normal swing, the range has been reduced, and can now be blocked by a well-timed normal melee. Players can no longer lunge immediately after a normal swing. The energy sword also has its own assassination animations when used against Elites or Spartans, replacing the Spartan [[combat knife]] and the Sangheili [[energy dagger]]; these assassinations do not deplete the sword's charge, nor do they count toward the weapon spree medals [[Sword Spree]], [[Slice 'N Dice]], or [[Cutting Crew]]. Elites also hold the sword back more than a Spartan when used as an active weapon. When a player is playing as an Elite and uses the Energy Sword as a primary weapon, the camera will lower a bit; this is due to the Elite hunching down. Finally, parrying does slight damage and can kill a player.
{{Clear}}


=== Changes from ''Halo: Reach'' to ''Halo 4'' ===
===''Halo: Combat Evolved Anniversary''===
[[File:EnergySword-HUD.png|right|150px|thumb|HUD icon of the energy sword in ''Halo 4''.]]
Active camouflage now makes the user extremely hard to spot due to the enhanced graphics. Distortion also covers more the exact shape of the user, unlike previous iterations.
Contrary to ''Halo: Reach'', ''Halo 4'' does not feature the possibility to block a sword lunge with a simple melee. Killing an opponent with an energy sword no longer rewards the player with a [[Bone Cracker|Pummel]] medal, it is instead replaced by the [[Sword Kill]] medal. The battery is also drained with every hit, including against walls and floors, so it's far less viable against Hunters and other powerful enemies.
{{Clear}}


=== Changes from ''Halo 4'' to ''Halo 2: Anniversary'' ===
===''Halo 4''===
Like the original ''Halo 2'', players cannot parry with the sword. An alternate version of the sword with a red-colored blade, called the ''Infected Energy Sword'', can be used.
The '''[[Type-3 active camouflage|Type-3 Refraction Dissonance Modifier/Camouflage]]''' bends light around a structure, hiding it via advanced pattern realignment. It is similar to the version in ''Halo: Reach'', however the jammer no longer makes false hostile contacts appear on the motion sensor, rather it makes neutral contacts appear and in a much tighter grouping than before, therefore not only preventing the user from using it to trick enemies, but possibly giving away their location. Despite this, it still is an effective tool for hiding outside of cover and ambushing enemies.
* Players can melee with the sword as soon as they swap to it.
* Melee range is drastically increased.
* Unlike its ''Halo 2'' counterpart, its battery can be depleted.
{{Clear}}


=== Changes from ''Halo 2: Anniversary'' to ''Halo 5: Guardians'' ===
===''Halo 5: Guardians''===
The ''Halo 5: Guardians'' sword retains the ability to parry from ''Halo 4''. Unlike in past titles, players can aim with the sword to increase its effective range, and the weapon provides a noticeable speed boost which is enough to make the player visible on the motion sensor while crouching. Three unique versions of the energy sword are available for use: ''[[Ravening Sliver]]'', ''[[Vorpal Talon]]'', and the [[Mythic weapon|mythic]] ''[[Prophets' Bane]]''.
Active camouflage is now a powerup that can be picked up in Arena or requisitioned in Warzone. While active the user is invisible to the motion sensors of enemies as long as they are not sprinting. Moving while crouched no longer deteriorates the quality of camouflage, though moving faster would. It now displays a meter on the HUD that shows the remaining duration of the power up, and shortly before it runs out, the player will be notified via a quiet beeping sound.


If the energy sword's battery is depleted, the player cannot lunge with the sword.
===''Halo Wars 2''===
{{Clear}}
Shrouds are able to cloak themselves and other units. [[Let 'Volir]] is able to cloak units with leader abilities.


=== Changes from ''Halo 5: Guardians'' to ''Halo Infinite'' ===
===''Halo Infinite''===
* The Energy Sword no longer has the ability to Smart Scope
Active Camouflage is activated via an animation similarly to ''Halo 5: Guardians'', although it can now be used at will. If the player is killed before they can use it, or while in the process of activating it, they will drop the powerup which can now be picked up by another player. Active camouflage in ''Halo Infinite'' behaves like a hybrid of the active camouflage seen in the original trilogy, and the active camo seen in all the games since ''Halo: Reach''. If the player is simply moving and strafing, the camouflage remains consistent, but if they sprint or fire their weapon, the camo fades out. {{Ref/YouTube|Id=mpoverview|n-O7OuliQRY|HALO|Halo Infinite <nowiki>|</nowiki> Multiplayer Overview|D=4|M=7|Y=2021}}
* Lunges from the Energy Sword depletes ~15% of its battery as opposed to 10% in past games.
* Power ammunition crates and Energy Swords in the battlefield refill its battery without the need to pick up a fresh one.
* The sword is curved again, similar to the ''Halo 2'' and ''Halo 2: Anniversary'' incarnations. The blade is also now a much deeper blue, similar to ''Halo: Reach''’s.
{{Clear}}


==Non-canon and dubious canon appearances==
==Non-canon and dubious canon appearances==
===Silver Timeline===
===Silver Timeline===
{{Main|Silver Timeline}}
{{Main|Silver Timeline}}
Energy swords are used by Covenant Sangheili against humanity.{{Ref/YouTube|Id=HTVOT|5KZ3MKraNKY|Paramount+|Halo The Series (2022) Official Trailer|Y=2022|M=1|D=30}}
Active camouflage is used by Covenant Sangheili.{{Ref/Film|[[Halo: The Television Series Season One]], [[Contact]]}}
== Trivia ==
==Trivia==
* The shape of the energy sword is very similar to the real-life combat weapon, the [[Wikipedia:Katara (dagger)|katara]]. It was a South Asian weapon and status symbol, similar to the energy sword's symbolization of status among the Elites.
*Changing the graphics card settings on [[Halo: Combat Evolved (PC port)|''Halo: Combat Evolved'' for PC]] (lowering the quality and effects) makes active camouflage users appear as an easily-seen gray, opaque silhouette.
* The energy sword was originally going to be usable in ''Halo: Combat Evolved'', but was cut when the game became a first-person shooter.<ref>'''[[Halo: Combat Evolved]]''', ''[[E3|E3 2000 Announcement Trailer]]''</ref>
*In ''Halo: Combat Evolved'', the flood can still see you if you use active camo.
* In ''Halo 2'', the Elites will tell one of them to recover the blade if the player dies while wielding one.
*Oddly enough, a group of Major and Minor Grunts in the ''Halo 2'' level [[Delta Halo]] used Active Camouflage as they fought alongside a group of [[Stealth Sangheili|Stealth Elites]]. Spec Ops Grunts are also seen using this in the level [[The Arbiter]] just before entering the gas mine. This suggests that at least some Grunts have this equipment.
* In the ''Halo 3'' Vidoc [[Et tu Brute?]] there is an unfinished animation depicting a [[Jiralhanae Chieftain]] wielding an energy sword. This is, however, never seen in the hands of Jiralhanae in the final game.
*When used in association with an [[Overshield]], the Active Camo becomes completely useless due to the charges of the overshield washing over the player's body (except in ''Halo: Combat Evolved''). In ''[[Halo 3]]'', the same effect occurs when Active Camouflage and Overshields are both working.
* The ''Fable 2: Limited Edition'' comes with [[Fable:Hal's Sword|"Hal's Sword"]], a crystal blade shaped like an energy sword for in-game use, to coincide with the use of [[Fable:Hal's Armor|"Hal's Armor"]], which resembles [[MJOLNIR]] armor.<ref>[http://www.joystiq.com/2008/10/16/fable-2s-spartan-armor-and-energy-sword-pictured/ '''Joystiq''' - ''Fable 2's Spartan armor and energy sword pictured'']</ref>
*The active camouflage has no effect on the flames on the [[Bungie Armor]], allowing enemies to more easily locate the user of the chest piece.
* A depleted energy sword hilt can still be used offensively. While the damage varies, it has a higher melee rate than any weapon, allowing the player to barrage an enemy with many hits. Once the hilt is swapped for another weapon, however, it cannot be picked up again and often vanishes entirely.
*With the [[Halo 2 skulls#Envy|Envy]] skull on in ''[[Halo 2]]'', the [[John-117|Master Chief]]'s flashlight will be replaced with active camouflage. This can also be combined with a glitch which allows you to reload from a checkpoint, after saving and quitting, and turning off your console, with infinite active camouflage. This makes the Campaign on ''Halo 2'' considerably easier, even on Legendary difficulty.
* In ''Halo 5: Guardians'', the energy sword can turn Spartan charges into one-hit-kills if active. As the Spartan uses the sword to accomplish this, doing so consumes battery.
*In any Halo game, when you have active camouflage on and you get in a vehicle, the camouflage stays on and appears as if there was a ghost driving it or that it was driving itself (works particularly well with the Warthog LAAG). It works with any vehicle which exposes the occupants to view.
* The ''Vorpal Talon''{{'}}s ability to maintain the player's motion tracker while scoped is mechanically identical to the Awareness [[support upgrade]] from ''Halo 4''.
*In ''Halo 2'' for Windows Vista, when playing on Threshold, your comrades are not picked up by radar when camouflaged.
*The Energy Sword was found in Bungie's 30th anniversary event as an arc sword Half Truths and a void sword The Other Half in ''Destiny 2''.
*The lights on a [[Gravity hammer (fiction)|gravity hammer]] can be seen clearly when camouflaged. It is not recommended to have a Gravity Hammer either as your primary weapon or secondary weapon when using active camo, as the lights make you an easy target for experienced snipers.
*In [[Wikipedia:Konami|Konami]]'s ''[[Wikipedia:Super Bomberman R|Super Bomberman R]]'', the Energy Sword is the weapon used by the [[Arbiter|Arbiter Bomber]].
*In ''Halo 3'', go in Monitor mode and find an Active Camouflage. Go inside it. After about 10–20 seconds, the Active Camo will stop making its shimmering noise and you'll hear a brief whispering sound (like a sigh or breath), and then it will continue its shimmering noise.
 
*Strangely, the active camo module in the ''Halo: Reach'' [[Halo: Reach Multiplayer Beta|Beta]] had "UNSC" printed on it, even when being used by Elites, though this is likely because it was a placeholder file.
== Gallery ==
*The Overshield as well as Active camouflage were requested by Hardy LeBel as a feature for Halo: CE's multiplayer. The team working on the campaign saw that they were and added them too.
{{Linkbox|gallery=yes|gallerypage=Images of energy swords}}
=== Screenshots and artwork ===
<gallery>
File:Swordelite.jpg|A Zealot with an Energy Sword as it appears in ''[[Halo: Combat Evolved]]''.
File:H2-EnergySword.jpg|First-person view of the Energy Sword in ''[[Halo 2]]''.
File:Halo2-EnergySword.png|A profile view of the Energy Sword from ''Halo 2''.
File:H3 Energy Sword profile.JPG|The Energy Sword in ''[[Halo 3]]''
File:H3 Energy Sword render.png|An Energy Sword in ''Halo 3''.
File:H3-EnergySwordHilt.png|A view of the hilt of the Energy Sword in ''Halo 3''.
File:H3-EnergySwordProfile.png|An in-game profile view of the Energy Sword from ''Halo 3''.
File:H3 DLC RatsNest 1stPerson-02.jpg|First-person view of the Energy Sword in ''Halo 3''.
File:H3 Foundry Spartan clash.jpg|Two Spartans parrying in the air on [[Foundry]].
File:Swordstrike.JPG|A sword lunge in ''Halo 3''.
File:Sword Study2.jpg|A study of the Energy Sword from ''Halo 3''.
File:News2_1.jpg|Hal's sword, a downloadable bonus in the ''Fable 2 Collector's Edition'' (note the more traditional grip).
File:HaloWars-EnergySword-PlasmaBleed.png|An Energy Sword as seen in the ''[[Halo Wars]]'' announcement trailer.
File:HW_Arbiter_EnergySword_Concept.jpg|A study of [[Arbiter]] [[Ripa 'Moramee]]'s custom Energy Swords in ''Halo Wars''.
File:HW Render Arbiter Ripa Moramee.png|Ripa 'Moramee's dual custom Energy Swords in ''Halo Wars''.
File:Fal - The Duel.png|Arbiter [[Fal 'Chavamee]] dual wielding energy swords in ''[[Halo Legends]]: [[The Duel]]''.
File:LegendsPackage-John117-EnergySword.jpg|[[John-117]] wielding an energy sword against [[Thel 'Lodamee]] in ''Halo Legends: [[The Package (animated short)|The Package]]''.
File:Schism 2.png|A Sangheili dual wielding energy swords against a [[Jiralhanae Captain Major]] in ''[[The Return]]''.
File:BL Reff kills Thon.png|[[Reff 'Talamee]] kills his [[Thon 'Talamee|brother]] with an energy sword during the [[Battle of Line-Installation 1-4]] in ''[[Halo: Blood Line]]''.
File:Halo Reach Energy Sword.jpg|An Energy Sword in the ''[[Halo: Reach Beta]]''.
File:Type_1_Energy_Sword_Reticle.jpg|An Energy Sword's crosshair in the ''Halo: Reach Beta''.
File:HR-EnergySword.jpg|First-person view of the Energy Sword in the final build of ''[[Halo: Reach]]''.
File:Sword Study HRB 1.jpg|A study of the Energy Sword in ''Halo: Reach''.
File:HR-T1EWS-EnergySword-RefChart.jpg|Reference chart of the Energy Sword in ''Halo: Reach''.
File:Cartographer Zealot.jpg|A Zealot with an Energy Sword in ''[[Halo: Combat Evolved Anniversary]]''.
File:FUD - ChenDeath.jpg|A Hesduros Zealot killing [[Junjie Chen]] with an energy sword during the [[Battle of Circinius IV]] in ''[[Halo 4: Forward Unto Dawn]]''.
File:H4-EnergySword.png|The Energy Sword in ''[[Halo 4]]''.
File:H4-EnergySword-FirstPerson.jpg|First-person view of the Energy Sword in ''Halo 4''.
File:H4-Commander&Storm.png|A [[Commander (Covenant)|Commander]] with an Energy Sword in ''[[Spartan Ops]]''.
File:HE14 Traitor 4.jpg|[[Jul 'Mdama]] killing a prisoner with his energy sword in ''[[Halo: Escalation]]''.
File:Nightfall - Sangheili attack.png|A Hesduros Zealot with an energy sword during the [[Terrorist attack on Sedra City]] in ''[[Halo: Nightfall]]''.
File:H2ACP-EnergySwordHUD.png|First-person view of the Energy Sword in ''[[Halo 2: Anniversary]]'' campaign.
File:H2A-Rtas&Arbiter.jpg|[[Rtas 'Vadum]] with an Energy Sword in ''Halo 2: Anniversary''.
File:H2AZealot.jpg|A Zealot with an Energy Sword in ''Halo 2: Anniversary''.
File:H2A Terminals - Thel and Marine.png|Supreme Commander Thel 'Vadamee with an energy sword in ''Halo 2: Anniversary<nowiki>'s</nowiki>'' [[Terminal (Halo 2: Anniversary)|terminals]].
File:H2A EnergySword-MP.png|The Energy Sword in ''Halo 2: Anniversary''{{'}}s multiplayer and campaign cutscenes.
File:H2AMP-EnergySwordHUD.png|First-person view of the Energy Sword in ''Halo 2: Anniversary'' multiplayer.
File:H2AMP-EnergySword.png|A [[HOPLITE-class Mjolnir|Hoplite]]-clad Spartan using an Energy Sword on [[Stonetown]].
File:Hunters in the Dark full cover.jpg|Shipmaster [[N'tho 'Sraom]] using an energy sword during [[Operation: FAR STORM]] in ''[[Halo: Hunters in the Dark]]''.
File:H5GB-EnergySword.png|First-person view of the Energy Sword in the ''[[Halo 5: Guardians Multiplayer Beta]]''.
File:H5GB-EnergySwordzoom.png|The Energy Sword being used with [[Spartan abilities#Smart Scope/Hover|smart scope]] in the ''Halo 5: Guardians Multiplayer Beta''.
File:H5GB-EnergySwordcomparisons.png|A comparison between the standard Energy Sword and the Prophets' Bane in the ''Halo 5: Guardians Multiplayer Beta''.
File:H5G-John&Sword.jpg|John-117 armed with an energy sword during the [[Operation: BIRD IN HAND|Raid on ''Argent Moon'']] in a ''[[Halo 5: Guardians]]'' prerelease screenshot.
File:H5G-EnergySwordHUD-Campaign.png|First-person view of the energy sword by [[Frederic-104]] in the ''Halo 5: Guardians'' campaign.
File:H5G-EnergySwordzoom-Campaign.png|Smart scope with the energy sword by Frederic-104 in the ''Halo 5: Guardians'' campaign.
File:H5G-Fred&Sword.png|Frederic-104 armed with an energy sword on [[Genesis]].
File:H5G-Fred&EmptySword.png|Frederic-104 holding an empty energy sword in his hands.
File:H5G-VorpalTalonHUD-Campaign.png|First-person view of the Vorpal Talon by [[Edward Buck]] in the ''Halo 5: Guardians'' campaign.
File:H5G-EnergySwordHUD.png|First-person view of the energy sword in ''Halo 5: Guardians''.
File:H5G-EnergySwordzoom.png|Smart scope with the energy sword.
File:H5G-RaveningSliverHUD.png|First-person view of the ''Ravening Sliver'' in ''Halo 5: Guardians''.
File:H5G-RaveningSliverSS.png|Smart scope with the ''Ravening Sliver''.
File:H5G-VorpalTalonHUD.png|First-person view of the Vorpal Talon in ''Halo 5: Guardians''.
File:H5G-VorpalTalonSS.png|Smart scope with the ''Vorpal Talon''. Notice that the motion tracker is still present.
File:H5G-InfectionSword.jpg|A Necroplasma sword.
File:H5G-InfectedSwordHUD.png|First-person view of a Necroplasma sword.
File:H5G - Freebooter with Energy Sword on Coliseum.png|A [[FREEBOOTER-class Mjolnir|Freebooter]]-clad [[SPARTAN-IV program|Spartan-IV]] with an energy sword on [[Truth]].
File:H5G-RaveningSliver.png|A [[CENTURION-class Mjolnir|Centurion]]-clad Spartan-IV with the ''Ravening Sliver'' on [[Deadlock]].
File:H5G-VorpalTalon.png|A Centurion-clad Spartan with the ''Vorpal Talon''.
File:HSOI-CoverArt.jpg|Rtas 'Vadum using an energy sword in ''[[Halo: Shadow of Intent]]''.
File:Halo Online - screenshot.jpg|First-person view of the energy sword in ''[[Halo Online]]''.
File:Leon-011.png|Concept art of [[Leon-011]] with an energy sword for ''[[Halo Wars 2]]''.
File:HINF XGS2020 Sangheili Energy Sword.png|John-117 getting ready to lunge at a Sangheili in the [[Halo Infinite Campaign Gameplay Trailer]].
File:HINF_Yoroi-class Mjolnir 3.png|A [[Kabuto]]-clad Spartan wielding an energy sword in the  [[A New Generation]] trailer.
File:HINF_Multiplayer Reveal 2021-7.png|A Spartan in combat with an energy sword.
File:HINF ChakLok.png|The [[Sangheili Warlord]] [[Chak 'Lok]] holding an energy sword.
File:HINF Duelist Sword Unggoy Assault.png|Swinging a Duelist Energy Sword against an Unggoy Assault.
File:HINF JegaRdomnai Swords.png|Jega 'Redomnai with a bloodblade and Ghostpierce.
File:HTV-JohnvsElites.png|Covenant Sangheili with energy swords in ''[[Halo: The Television Series]]''.
</gallery>


=== Prop replicas ===
==Gallery==
<gallery>
<gallery>
File:HaloCovenantEnergySword-PropReplica.png|Prop replica version of the Energy Sword.
File:HaloCE-ActiveCamouflage.jpg|A Stealth Elite using active camouflage in ''Halo: Combat Evolved''.
File:Halo-Mattel-Energy-Sword.png|Mattel prop replica Energy Sword available to buy at GameStop, circa 2016.
File:HCE_Campaign_ActiveCamo_Pickup.jpg|Active Camo in ''Halo: Combat Evolved'' campaign.
File:HCE_MP_ActiveCamo_Pickup.png|Active Camo in ''Halo: Combat Evolved'' multiplayer.
File:HCEPC ActiveCamoflage.png|Active camouflage on ''[[Halo: Combat Evolved (PC port)|''Halo: Combat Evolved'' for PC]]''.
File:H2 Active Camouflage.png|The Active Camouflage in ''Halo 2''.
File:H3_ActiveCamo.jpg|The Active Camouflage in ''Halo 3''.
File:H3_Bungie_Camo.jpg|Bungie Armor and Active Camouflage in ''Halo 3''.
File:HReach Active Camouflage.jpg|The Active Camouflage powerup in ''Halo: Reach''.
File:HR SpecOpsElites.jpg|Multiple SpecOps Sangheili using active camouflage, with one also possessing [[Overshield]].
File:H4 ActiveCamo_Spartan.jpg|Active Camouflage in use in ''[[Halo 4]]''.
File:H2A-ActiveCamo.png|Active camouflage in ''[[Halo 2: Anniversary]]'' multiplayer.
File:H2A-CloakedSpartan.png|A Spartan using active camouflage in ''Halo 2: Anniversary'' multiplayer.
File:REQ Card - Active Camo I.png|REQ card for Active Camouflage in [[Halo 5: Guardians]].
File:Activecamo2.png|REQ Card for Active Camouflage II.
File:Activecamo3.png|REQ Card for Active Camouflage III.
File:H5G-Camo.png|A Spartan-IV using active camouflage in ''Halo 5: Guardians''.
File:HINF ActiveCamouflage Icon.png|HUD icon for the active camouflage in ''[[Halo Infinite]]''.
File:HINF-CamoOrko.png|[[Okro 'Vagaduun]] using active camo in ''Halo Infinite''.
File:HINF-Deadlockcamo.jpg|A Spartan-IV carrying an active camo module in ''Halo Infinite''.
File:HINF-Camo1.png|A Spartan-IV activating an active camo module in ''Halo Infinite''.
File:HINF-CamodSpartan.png|A Spartan-IV with active camo in ''Halo Infinite''.
File:HTV-Contact-ActiveCamomodule.jpg|A Sangheili with an active camo module in ''[[Halo: The Television Series]]''.
File:HTV-Contact-ActiveCamo.jpg|The same Sangheili activating the active camo.
</gallery>
</gallery>


== List of appearances ==
==List of appearances==
{{Col-begin}}
*''[[Halo: The Fall of Reach]]'' {{1st}}
{{Col-2}}
*''[[Halo: Combat Evolved]]''
* ''[[Halo: Combat Evolved]]'' {{1st}}
*''[[Halo: The Flood]]''
* ''[[Halo: The Flood]]''
*''[[Halo: First Strike]]''
* ''[[Halo: First Strike]]''
*''[[Halo 2]]''
* ''[[i love bees]]''
*''[[Halo: Ghosts of Onyx]]''
* ''[[Halo 2]]''
*''[[Halo 3]]''
* ''[[Halo Graphic Novel]]''
*''[[Halo Wars]]''
** ''[[The Last Voyage of the Infinite Succor]]''
*''[[Halo 3: ODST]]''
* ''[[Halo: Ghosts of Onyx]]''
*''[[Halo Legends]]''
* ''[[Halo 3]]''
**''[[The Package (animated short)|The Package]]''
* ''[[Halo: The Cole Protocol]]''
*''[[Halo Evolutions - Essential Tales of the Halo Universe]]''
* ''[[Halo Wars: Genesis]]''
**''[[Headhunters (short story)|Headhunters]]''
* ''[[Halo Wars]]''
**''[[The Impossible Life and the Possible Death of Preston J. Cole]]''
* ''[[Halo: Helljumper]]''
*''[[Halo: Reach]]''
* ''[[Halo 3: ODST]]''
*''[[Halo: Combat Evolved Anniversary]]''
* ''[[Halo Legends]]''
*''[[Halo 4: Forward Unto Dawn]]''
** ''[[The Package (animated short)|The Package]]''
*''[[Halo 4]]''
** ''[[The Duel]]''
**''[[Spartan Ops]]''
** ''[[Origins]]''
*''[[Halo: Spartan Assault]]''
* ''[[Halo: Evolutions - Essential Tales of the Halo Universe]]''
*''[[Halo 2: Anniversary]]''
** ''[[Headhunters (short story)|Headhunters]]''
**''[[Terminal (Halo 2: Anniversary)|Terminals]]''
** ''[[The Return]]''
*''[[Halo: New Blood]]'' {{Mo}}
* ''[[Halo: Blood Line]]''
*''[[Halo: Last Light]]''
* ''[[Remember Reach]]''
*''[[Halo 5: Guardians]]''
** ''[[Deliver Hope]]''
*''[[Halo: Fractures]]''
* ''[[Halo: Reach]]''
**''[[Oasis]]''
* ''[[Halo: Fall of Reach]]''
*''[[Halo: Smoke and Shadow]]''
** ''[[Halo: Fall of Reach - Invasion|Invasion]]''
*''[[Halo: Tales from Slipspace]]
* ''[[Halo: Combat Evolved Anniversary]]''
**''[[Hunting Party]]''
** ''[[Terminal (Halo: Combat Evolved Anniversary)|Terminals]]''
*''[[Halo Wars 2]]''
* ''[[Halo 4: Forward Unto Dawn]]''
*''[[Halo: Envoy]]''
* ''[[Halo 4]]''
*''[[Halo: Collateral Damage]]''
** ''[[Spartan Ops]]''
*''[[Halo: Official Spartan Field Manual]]'' {{Mo}}
{{Col-2}}
*''[[Halo: Shadows of Reach]]''
* ''[[Halo: Spartan Assault]]''
*''[[Halo: Divine Wind]]''
* ''[[Halo: Escalation]]''
* ''[[Halo: Broken Circle]]''
* ''[[Halo: Nightfall]]''
* ''[[Halo 2: Anniversary]]''
** ''[[Terminal (Halo 2: Anniversary)|Terminals]]''
* ''[[Halo: Spartan Strike]]''
* ''[[Halo: Hunters in the Dark]]''
* ''[[Halo: The Fall of Reach - The Animated Series]]''
* ''[[Halo 5: Guardians]]''
* ''[[Halo: Shadow of Intent]]''
* ''[[Know Your Enemy]]''
* ''[[Halo: Ground Command]]''
* ''[[Halo Mythos]]''
* ''[[Halo: Fractures]]''
** ''[[Breaking Strain]]''
** ''[[Oasis]]''
* ''[[Halo: Tales from Slipspace]]''
** ''[[Fireteam Majestic Poker Night]]''
** ''[[Hunting Party]]''
** ''[[Knight Takes Bishop]]''
* ''[[Halo: Smoke and Shadow]]''
* ''[[Halo Wars 2]]''
* ''[[Halo: Envoy]]''
* ''[[Halo: Recruit]]'' {{C|Non-canonical appearance}}
* ''[[Halo: Rise of Atriox]]''
* ''[[Halo: Legacy of Onyx]]''
* ''[[Halo: Bad Blood]]''
* ''[[Halo: Fireteam Raven]]''
* ''[[Halo: Silent Storm]]''
*''[[Halo: Lone Wolf]]''
*''[[Halo: Outpost Discovery]]''
*''[[Halo: Oblivion]]''
*''[[Halo: Meridian Divide]]''
*''[[Halo: Shadows of Reach]]''{{Ref/Novel|Id=SOR3|HSoR|Chapter=3}}
**''[[Sacrifice]]''
*''[[Halo: Divine Wind]]'' {{Mo}}
*''[[Halo Infinite]]''
*''[[Halo Infinite]]''
*''[[Halo: The Television Series]]''
*''[[Halo: The Television Series]]''
**''[[Contact]]''
**''[[Contact]]''
**''[[Homecoming (TV Series)|Homecoming]]'' {{Mo}}
**''[[Transcendence]]''
*''[[Halo: The Rubicon Protocol]]''
*''[[Halo: The Rubicon Protocol]]''
{{Col-end}}
*''[[Halo: Outcasts]]''
 
==Sources==
{{Ref/Sources}}
 
{{Navbox/Pickups/Gameplay}}


== Sources ==
[[Category:Camouflage]]
{{Ref/Sources|2}}
[[Category:Armor abilities]]
[[Category:Power ups]]

Latest revision as of 17:46, April 5, 2024

Are you looking for the Halo 4 version? For other uses, see Camouflage (disambiguation).
A Spartan using active camouflage.

"One of those things is inside, and it is invisible!'"
— Cadet Thomas Lasky[1]

Active camouflage (often shortened to active camo) refers to a broad range of optical camouflage technologies that conceal or cloak its user or an object from visual detection by rapidly adapting to its surroundings.[2][3] Although active camouflage originated from the Covenant—also inherited and adapted by its remnants—similar technology was employed by the United Nations Space Command, with personal ppactive camouflage being directly reverse-engineered from its Covenant counterpart.[2]

Covenant active camouflage conceals by bending and refracting light around its surface.

texture buffer and photoreactive panel

Personal active camouflage

Covenant usage

Human usage

Personal active camouflage

Covenant usage

Human usage


Both the UNSC[4] and the Covenant use various forms of active camouflage technology, though the term is .

Technically, active camouflage is not quite invisibility, though it is very similar. Rather, the There are a variety of ways to do this, though the UNSC uses photoreactive panels on its Semi-Powered Infiltration armor and prowler stealth ships for optical camouflage, adapting to the object's background to account for movement. Meanwhile, Covenant active camouflage actually bends light around the camouflaged object,[3] a task well within the Covenant's tier two technology level. The technology can be utilized on human armor systems, such as the MJOLNIR armor, but the UNSC has only developed rough equivalents.[5]

Covenant active camouflage

"Show yourselves, assassins! The scent of your cloak is faint, but it still fouls the air."
Atriox smelling active camouflage.[6]
A camouflaged Stealth Sangheili aboard Cairo Station.

Covenant active camouflage technology uses a field of energy to bend light around the user, thus making them effectively invisible. The armor used by Spec-Ops and Stealth Sangheili, as well as that of Arbiters, Jiralhanae Stalkers and even certain Sangheili Zealots,[7] include built-in active camouflage generators. These built-in generators have a severe drawback in that they divert power from shielding equipment. Troops equipped with permanent active camouflage generators tend to have weaker shielding than those not equipped with an active camouflage generator.

Arbiter Ripa 'Moramee was equipped with an active camouflage generator capable of generating a near-perfect cloaking field indefinitely. Arbiter Thel 'Vadam was also equipped with an active camouflage generator, but the device was capable only of providing a cloak for a few seconds, and although 'Vadam was equipped with personal shielding, his shields were relatively weak for an individual of such high rank, equivalent to those of a Sangheili Minor.

Aircraft or ships can also be equipped with active camouflage systems, including the Ru'swum-pattern Phantom that has its own active camouflage generators on board for various stealth missions,[8] and the Klavbrig Workshop Shroud used by the Banished to cloak the advance of their armies.[9] Larger vessels such as supercarriers, or entire armies, can be effectively hidden from both plain sight and sensors by using external stealth systems such as stealth pylons and Cloaking Generators.[7][9]

For personnel not equipped with built-in active camouflage, it can be provided by a variety of devices. Typically, the energy used to provide the effect is suspended inside a small, transparent pyramidal container, or a larger spherical force-field. Personnel can use the light-bending energy by coming into physical contact with the container or force-field, which will cause it to break and release its contents. Upon release, the energy envelops the wearer and bends light around their skin; armor or energy shielding, conforming to their form and rendering them almost invisible. After a short period of time, the energy will gradually dissipate and wear off, slowly revealing its user. The active camouflage provided by these devices lasts for ten seconds, and only prevents visual detection; those using active camouflage can be observed by other means, including motion tracking, noise, and environmental disturbances such as footprints on soft terrain.

Function

"Trust me, because I heard… uhhh… from a friend, that if you have active camouflage on and do a crys, it makes a big sizzle sound and everybody can see me hidin' in the corner."
Dimkee Hotay shares his bad experience with active camo.[10]

Covenant active camouflage will easily cloak its user, but its effect does not completely extend to items in the user's possession; human weapons are easily cloaked by active camouflage, but Covenant weapons are visible even with active camo, as the light-bending energy cannot mask the glow of the weapons' plasma. In Halo: Combat Evolved, however, plasma glow is hidden quite well by the cloaking equipment.

Though active camouflage is quite effective from a distance, it can faintly be seen if an observer is close enough to the wearer. However, it is difficult to spot a camouflaged opponent from a distance using a scoped weapon—actual physical proximity is required to reliably spot a person using active camo. It should be noted, though, that active camouflage does not mask environmental effects such as footprints, meaning that it is not as effective on soft terrain such as snow.

The shielding provided by Covenant active camo can be disrupted if projectiles pass through it; such a disruption weakens the invisibility effect and temporarily reveals the wearer. The power-up can be disrupted if the wearer fires shots or if the wearer is hit. It also progressively worsens: the longer the wearer fires (or is hit), the more visible they become. Once the disruptions end, however, the wearer quickly regains their invisibility.

Talcum powder and other atmospheric particles can disrupt the systems, causing the technology to overload and fail.[11] The device also generates a considerable amount of heat, causing its user to be clearly visible on human thermal goggles and some variations of the SRS99C-S2 AM sniper rifle.[12] The humans of Alpha Base on Installation 04 used this advantage when their base was infiltrated by stealth Elites, equipping their fireteams with infrared goggles allowing them to easily see the attackers. In addition, SPARTAN-IIs William-043 and Kelly-087 employed talcum powder in order to overload the camouflage on Reach in order to find them.[11] Atriox was able to detect the use of active camouflage through smell.[6] However, it is possible he was just smelling the users themselves rather than the cloaking field, and was calling them out for its use.

During the Requiem Campaign, active camouflage was used to shield the seven HAVOK tactical nuclear weapons smuggled aboard the UNSC Infinity from detection by the ship's AI Roland. After Fireteam Crimson took out a Sangheili holding a cloaking remote, Roland realized this tactic. By tracking the energy signature from the cloaking generator, Roland was able to locate the warheads in the Engine Room and direct Crimson where to go to disarm them before they could be used to destroy the Infinity. Unlike conventional active camouflage, this type shielded the warheads from sensors but they could be physically seen by nearby persons without any issue.[13] Later, in the Warrens, the Covenant hooked up active camouflage to their shield generators to prevent the human forces from finding and destroying them. Spartan Jared Miller was eventually able to identify the Sangheili who controlled the active camouflage and after Crimson took him out, the active camouflage dropped, revealing the generators.[14]

After the death of Gek 'Lhar, his corpse was looted by Fireteam Majestic. Spartan Gabriel Thorne took Gek's active camouflage module[15] which he subsequently used during the attempted rescue of Dr. Catherine Halsey.[16]

UNSC active camouflage

Image of PRO-49776 disengaging its camouflage.
ONI PRO-49776 disengaging its advanced cloaking field, an outlier in UNSC camouflaging technology during the Covenant War.

The UNSC has developed several varieties of active-camouflage technology. These do not utilize the same light-bending energy as Covenant active camouflage and are generally less effective. The most common form of human active camouflage technology operates on a different principle than the Covenant counterpart, using photoreactive panels to impersonate the surrounding environment like a chameleon. A device known as the camouflage cloak can hide the wearer's infrared signature, beside serving as a form of camouflage.[4]

Roland-B210 with his camouflage activated.

The Semi-Powered Infiltration armor used by the Spartan-IIIs utilizes photo-reactive panels to conceal the wearer's infrared signature and to blend in with the surrounding environment. When combined with their natural talent and training for stealth, it can be a very effective tool. Some Headhunters used a prototype camouflage almost identical to the Covenant version, rendering them almost invisible, except that it only lasted 3–5 minutes and other systems have their power drained while it recharged. This feature saw very limited use in field tests by ODSTs.[17]

A common human active camouflage device, copied from similar Covenant technology, comes in the form of a "plug" which attaches to a socket located on the lower back of compatible armor. The non-integral nature of the device allows it to be added or removed at will for improved operational flexibility. The device provides a conditionally effective cloak; as long as the user remains still or moves slowly, the camouflage will be highly efficient, providing near-total invisibility for minimal energy loss. However, if the user moves more quickly, the camouflage will only provide rudimentary coverage and drain its energy very rapidly. Firing a weapon will also disrupt the camouflage and reveal the user. Furthermore, external sounds will be highly muffled to the user while this camouflage is in use, and if the user is equipped with motion tracking equipment, the detection capability of the motion tracker will be severely compromised, jamming the display with "ghost" targets.[18]

Much like the SPI armor, UNSC prowlers use texture buffers or "active camouflage skin" in conjunction with stealth ablative coatings to conceal themselves from view in addition to masking their heat and radar signatures.[4] This camouflage is not perfect, however, and cannot keep up with a constantly changing background such as a gas giant's atmosphere.[19] However, more advanced stealth ships were developed, such as ONI PRO-49776 using a form of cloak "bubble" similar to the light-bending energy fields used by the Covenant. This technology has not been observed in widespread use.[20]

The MJOLNIR Powered Assault Armor [GEN2] system is capable of incorporating Covenant T-3 Refraction Dissonance Modifier/Camouflage modules for stealth.[21]

Changes throughout Halo

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If the active camo is active during Campaign, the player is completely invisible to the AI enemies unless they fire their weapon. Active camouflage is only usable in Campaign when playing as the Arbiter in Halo 2, or if the player obtains the Envy Skull and restarts Campaign (active camo replaces Master Chief's flashlight). In Halo 3, rather than Active Camouflage, the slightly different Cloaking is available. It is also available as a powerup in five levels during Halo: Combat Evolved: The Truth and Reconciliation, Silent Cartographer, 343 Guilty Spark, Keyes, and Assault on the Control Room.

An interesting fact about Active Camouflage is that although the player can see the Type-1 energy sword-wielding Active Camo Elites in Halo: Combat Evolved (due to the sword), the Marines cannot see them; this is likely because the developers did not realize that the energy sword showed through the Active Camo, leading them to code the Marines' AI to be oblivious to it. This advantage is removed in Halo 2—the Elites now wait, only activating their swords when they're about to kill the player.

Halo 2

In Halo 2, it is noted that the Arbiter's armor, while possessing a built-in active camouflage generator, is not permanent, unlike the more modern generators used by Special Operations Elites. There is a circle on the player's HUD that shows the amount of time left (unfortunately, not shown numerically) for both the usage of the active camouflage and the recharging sequence. The Master Chief can gain this ability with the Envy Skull on Legendary only; however, his screen will lack the meter, forcing you to remember the time allowed for use.

When playing as the Arbiter, using any attack will cause the active camouflage to deactivate, and the player must wait for it to recharge before using it again.[22]

Halo 3

Main article: Cloaking

In Halo 3, the Active Camo is no longer contained inside a pyramid construct. Instead it appears as a large, glowing sphere with what appears to be containment devices around it, enclosing the powerup in Halo 3 multiplayer; but unlike past Halo games, active camo is not found in campaign. In campaign, Active Camouflage is replaced by the Cloaking equipment, which functions in the same way as active camouflage once did. Melee attacks, shooting, throwing grenades and using equipment will negate the effect of the power-up. Also, wearing the Flaming Helmet is an obvious give-away to the opponent because the fire is still visible. By default, the pick-up lasts 30 seconds and doesn't dissipate with movement, unlike in Reach.

The quality of camouflage in custom games may be set to two different settings:[23]

  • Poor Camo: The player has camouflage that might fool a Grunt.
    • The player is still somewhat visible.
  • Good Camo: The player has camouflage that will fool an attentive Elite.
    • This makes the player almost invisible, but the light is distorted within the player's shape.

Halo: Reach

The Active Camo in Halo: Reach has undergone many major changes. It is now available as an Armor Ability to both Spartan and Elite players. As a secondary effect, when used, it acts as a Radar Jammer, scrambling the radar of the user and all enemies within 25 meters, making the user harder for enemies to detect on their motion trackers. This function can be both beneficial and detrimental to the player; on the one hand, it can make enemies easier to ambush, however, it also informs the enemy team that someone is using Camo nearby. This can backfire on the player by making the enemy team more perceptive to possible ambushes. The Active Camo also greatly reduces the volume of all sounds for its user, making it more difficult to notice a grenade being thrown or a nearby enemy firing a weapon.

The strength or effectiveness of the Camo also varies depending on whether/how fast the user is moving. When standing still, the player is rendered almost completely invisible. Moving slowly or crouch-walking will slightly decrease the quality of cloaking, although the user is still hard to spot. When moving faster than crouch-walking speed, the Active Camo becomes much less effective, cloaking the user only partially (similar to the Poor Camo from Halo 3). The player's movement speed does not affect the rate at which the Armor Ability meter drains. The freedom for the player to control when they activate their camouflage makes it much more effective, as it allows for use in the most opportune situations, instead of restricting the player to activate it on pickup. However, the reduced hearing and radar jamming effects require the player to be more aware of his surroundings than usual,[24] and must also take care not to move too fast.

Enemies in campaign and Firefight will detect the user after a while. As such, it is far less effective than previous iterations.

Halo: Combat Evolved Anniversary

Active camouflage now makes the user extremely hard to spot due to the enhanced graphics. Distortion also covers more the exact shape of the user, unlike previous iterations.

Halo 4

The Type-3 Refraction Dissonance Modifier/Camouflage bends light around a structure, hiding it via advanced pattern realignment. It is similar to the version in Halo: Reach, however the jammer no longer makes false hostile contacts appear on the motion sensor, rather it makes neutral contacts appear and in a much tighter grouping than before, therefore not only preventing the user from using it to trick enemies, but possibly giving away their location. Despite this, it still is an effective tool for hiding outside of cover and ambushing enemies.

Halo 5: Guardians

Active camouflage is now a powerup that can be picked up in Arena or requisitioned in Warzone. While active the user is invisible to the motion sensors of enemies as long as they are not sprinting. Moving while crouched no longer deteriorates the quality of camouflage, though moving faster would. It now displays a meter on the HUD that shows the remaining duration of the power up, and shortly before it runs out, the player will be notified via a quiet beeping sound.

Halo Wars 2

Shrouds are able to cloak themselves and other units. Let 'Volir is able to cloak units with leader abilities.

Halo Infinite

Active Camouflage is activated via an animation similarly to Halo 5: Guardians, although it can now be used at will. If the player is killed before they can use it, or while in the process of activating it, they will drop the powerup which can now be picked up by another player. Active camouflage in Halo Infinite behaves like a hybrid of the active camouflage seen in the original trilogy, and the active camo seen in all the games since Halo: Reach. If the player is simply moving and strafing, the camouflage remains consistent, but if they sprint or fire their weapon, the camo fades out. [25]

Non-canon and dubious canon appearances

Silver Timeline

Main article: Silver Timeline

Active camouflage is used by Covenant Sangheili.[26]

Trivia

  • Changing the graphics card settings on Halo: Combat Evolved for PC (lowering the quality and effects) makes active camouflage users appear as an easily-seen gray, opaque silhouette.
  • In Halo: Combat Evolved, the flood can still see you if you use active camo.
  • Oddly enough, a group of Major and Minor Grunts in the Halo 2 level Delta Halo used Active Camouflage as they fought alongside a group of Stealth Elites. Spec Ops Grunts are also seen using this in the level The Arbiter just before entering the gas mine. This suggests that at least some Grunts have this equipment.
  • When used in association with an Overshield, the Active Camo becomes completely useless due to the charges of the overshield washing over the player's body (except in Halo: Combat Evolved). In Halo 3, the same effect occurs when Active Camouflage and Overshields are both working.
  • The active camouflage has no effect on the flames on the Bungie Armor, allowing enemies to more easily locate the user of the chest piece.
  • With the Envy skull on in Halo 2, the Master Chief's flashlight will be replaced with active camouflage. This can also be combined with a glitch which allows you to reload from a checkpoint, after saving and quitting, and turning off your console, with infinite active camouflage. This makes the Campaign on Halo 2 considerably easier, even on Legendary difficulty.
  • In any Halo game, when you have active camouflage on and you get in a vehicle, the camouflage stays on and appears as if there was a ghost driving it or that it was driving itself (works particularly well with the Warthog LAAG). It works with any vehicle which exposes the occupants to view.
  • In Halo 2 for Windows Vista, when playing on Threshold, your comrades are not picked up by radar when camouflaged.
  • The lights on a gravity hammer can be seen clearly when camouflaged. It is not recommended to have a Gravity Hammer either as your primary weapon or secondary weapon when using active camo, as the lights make you an easy target for experienced snipers.
  • In Halo 3, go in Monitor mode and find an Active Camouflage. Go inside it. After about 10–20 seconds, the Active Camo will stop making its shimmering noise and you'll hear a brief whispering sound (like a sigh or breath), and then it will continue its shimmering noise.
  • Strangely, the active camo module in the Halo: Reach Beta had "UNSC" printed on it, even when being used by Elites, though this is likely because it was a placeholder file.
  • The Overshield as well as Active camouflage were requested by Hardy LeBel as a feature for Halo: CE's multiplayer. The team working on the campaign saw that they were and added them too.

Gallery

List of appearances

Sources

  1. ^ Halo 4: Forward Unto Dawn, episode 4
  2. ^ a b Halo Encyclopedia (2011 edition), page 355
  3. ^ a b Halo 4: The Essential Visual Guide, page 136 Cite error: Invalid <ref> tag; name "h4evg" defined multiple times with different content
  4. ^ a b c Halo: Ghosts of Onyx, page 291
  5. ^ Halo: The Fall of Reach
  6. ^ a b Hunting Party
  7. ^ a b Halo: Reach, campaign level Tip of the Spear
  8. ^ Halo 3, campaign level The Covenant
  9. ^ a b Halo Wars 2
  10. ^ Halo 5: Guardians, campaign level Alliance
  11. ^ a b Halo: First Strike
  12. ^ Halo: The Flood
  13. ^ Spartan Ops, S107 Invasion, Engine of Destruction
  14. ^ Spartan Ops, S108 Lancer
  15. ^ Spartan Ops, S108 Expendable
  16. ^ Spartan Ops, S109 Key
  17. ^ Halo: Evolutions - Essential Tales of the Halo Universe, Headhunters
  18. ^ Halo: Reach
  19. ^ Halo: Evolutions - Essential Tales of the Halo Universe, "The Impossible Life and the Possible Death of Preston J. Cole", page 477
  20. ^ Halo Legends, The Package
  21. ^ Halo Waypoint: Halo 4 Interactive Guide
  22. ^ Halo 2
  23. ^ Game Trailers: Custom Games Glitch Gameplay
  24. ^ Bungie.net: Halo: Reach Beta Survival Guide
  25. ^ YouTube - HALO, Halo Infinite | Multiplayer Overview (Retrieved on Jul 4, 2021)
  26. ^ Halo: The Television Series Season One, Contact