Editing Combat knife

{{Status|Canon}}
{{Wikipedia}}
{{Disambig header|the UNSC weapon|other uses|Knife}}

[[File:HINF NowTheseAreKnives.png|right|thumb|250px|Various combat knife types. All manufactured by [[Misriah Armory]].]]
{{Quote|A sharp blade never runs out of ammo, doesn't need to recharge, and can't be disabled by EMP. It can be gripped even when mortally wounded and the Mjolnir's power has failed. It can never betray you or be turned by the Flood. And yet, some in the UNSC are surprised by the rapid adoption and popularity of knife-fighting skills among Spartans.|An observation regarding Spartan combat knife use.{{Ref/Game|Id=Garita|HINF|Armor customization (Halo Infinite)|Armor Hall|Detail=TAC/Garita Omega - Shoulder Armor Description}}}}

A '''combat knife''' is a knife designed for close-quarters combat. They are primarily used for [[Planetary warfare|trench warfare]] and [[Naval boarding|boarding actions]].{{Ref/Book|Id=enc22|Enc22|Page=185}}

The Covenant use knives as well; the Jiralhanae use their [[Jiralhanae combat knife|own combat knives]] as well as a multitude of bayonet-like blades. The Sangheili sometimes use [[curveblade]]s, which inspired the design of the [[Type-1 energy sword]]. The [[blamite]]-bladed [[energy cutlass]] is an analogous weapon used by the [[Kig-Yar]].{{Ref/Book|Enc09|Page=329}}{{Ref/Novel|CH|Page=125}}

==Overview==
[[File:Combat Knife.png||left|thumb|100px|The [[M1 combat knife]].]]
===Design details===
One version of the UNSC's multi-purpose combat knife has a 20-centimeter (7.9&nbsp;in) blade made of high carbon steel, an anti-flash, non-reflective [[titanium]] carbide coating, edge coated for corrosion resistance and is {{Convert|43.3|cm|ftin|sp=us}} long when sheathed. It is also balanced for throwing.{{Ref/Novel|TFoR|Page=80}} The [[Spartan-III]]s' standard-issue combat knife features a self-sharpening blade made of a hyperdense material.{{Ref/Book|HM|Page=77}} Modern UNSC combat knives are made of strong enough material to pierce a [[Spartan]]'s helmet,{{Ref/Game|HR|[[Multiplayer]]}} and the hull of a [[Lich]].{{Ref/Level|H4|[[Shutdown]]}}

The placement of the combat knife sheath varies depending on the combat uniform and individual loadout, and may be kept, for example, on the shoulder with the handle pointing downward,{{Ref/Reuse|Thornblade}} sideways on the lower back,{{Ref/Game|H2|[[ODST]] model}} or on the side of the boot.{{Ref/Novel|TCP|Page=128}} Some [[SPARTAN-IV program|Spartan-IVs]] keep their knives sheathed in a wrist compartment.{{Ref/Comic|HEsc|Issue=3}}

There are a few different manufacturers of combat knives for the UNSC, including [[Watershed Division]]{{Ref/Reuse|OSFM}}{{Ref/Reuse|Thornblade}} and [[Misriah Armory]].{{Ref/Reuse|enc22}}{{Ref/Game|Id=M1|HINF|Detail=[[Armor customization (Halo Infinite)#Mark V (B) core|M1 combat knife]]}}{{Ref/Game|Id=Mk88|HINF|Detail=[[Armor customization (Halo Infinite)#Mark VII core|MK 88 Ratio]]}}{{Ref/Game|Id=Model52|HINF|Detail=[[Armor customization (Halo Infinite)#Mark VII core|Model 52 Navy knife]]}} In some cases, the Misriah logo was printed on the knife blade.{{Ref/Reuse|enc22}}

===Usage===
Some soldiers in service with the UNSC carry a combat knife of their own design or choice. [[Faison|Major Faison]] had a very large knife that he kept sheathed at his ankle, with the words "Bug-Hunter" engraved on the blade.{{Ref/Novel|TCP|Page=104}} [[Emile-A239]] used a large [[Wikipedia:Kukri|kukri]] for his weapon of choice.{{Ref/Level|HR|[[Noble Actual]]}} [[Roland-B210]], a member of the SPARTAN-III program's [[Headhunters]] division, also used a custom combat knife.{{Ref/Anthology|Evo|[[Headhunters (short story)|Headhunters]]}} [[Frederic-104]] possesses particular skill with combat knives, and it can be interpreted that he has a liking for their use.{{Ref/Novel|FS|Page=2 (2003 edition); 11 (2010 edition)}}{{Ref/Film|HLeg|Episode=[[The Package (animated short)|The Package]]}}  During the [[Battle of Trove]], Sergeant [[John Forge]]'s combat knife "Lucy" was used to seriously wound [[Arbiter]] [[Ripa 'Moramee]], allowing Forge to kill 'Moramee with his own [[energy sword (fiction)|energy sword]].{{Ref/Level|HW|[[Escape]]}} 

During the Human-Covenant war, the Thornblade would cease production for cost reasons. A small stockpile of them were kept by [[Team Omega]] following the [[Battle for Arcadia]].{{Ref/Reuse|Thornblade}}

During the [[Battle of Kamchatka]], Spartan [[Jameson Locke]] uses his combat knife to fight and kill [[Jul 'Mdama]] the leader of [[Jul 'Mdama's Covenant|the reformed Covenant]].{{Ref/Level|H5G|[[Osiris (level)|Osiris]]}}

==Variants==
Large-scale manufacturing and broad leeway with usage means there are hundreds of variations available to UNSC personnel including [[kukri]]s, ulus, billhooks, and push daggers.{{Ref/Reuse|enc22}}
*'''Lucy''': The combat knife in possession of John Forge.<ref name="gd">[http://www.gamedaily.com/articles/galleries/halo-wars-character-profiles-forge-and-the-arbiter/?page=8 '''GameDaily''' - ''Halo Wars Character Profiles (defunct)'']</ref>
*'''[[M1 combat knife]]''': A combat knife used by UNSC personnel during the end of the Human-Covenant War.{{Ref/Reuse|M1}}
*'''M5 combat knife''': The most common knife in service across all UNSC branches. It has an operational history of decades.{{Ref/Reuse|enc22}}
*'''[[M11 combat knife]]''': A combat knife designed and built for [[Spartan]]s.{{Ref/Generic|ThreeA|[[:File:ThreeA Recruit 1.jpg|Promotional image]]}}{{Ref/Book|Id=OSFM|OSFM|Page=182}}
*'''MK 88 Ratio''': A compact survival and utility knife commonly carried by UNSC and militia forces.{{Ref/Reuse|Mk88}}
*'''Model 52 Navy knife''': A large knife preferred by UNSC Navy special forces.{{Ref/Reuse|Model52}}
*'''Thornblade''': An advanced experimental blade manufactured by Watershed Division that requires a charge, but ceased production during the Human-Covenant War due to cost.{{Ref/Game|Id=ThornbladeBrace|HINF|Detail=[[Armor customization (Halo Infinite)#Mark VII core|TAC/Thornblade Brace]]}}{{Ref/Game|Id=Thornblade|HINF|Detail=[[Armor customization (Halo Infinite)#Mark IV core|TAC/Thornblade]]}}


<gallery>
File:HR-SpartanKnife.png|An M1 combat knife and its scabbard.
File:Regicide13.jpg|An M11 combat knife.
File:HINF TAC MK 88 Ratio Chest Icon.png|An MK88 knife.
File:HINF TAC Model 52 Navy Knife Utility Icon.png|A TAC/Model 52 Navy knife.
File:HINF TAC Kukri Machete Chest Icon.png|A kukri.
File:HINF-TACThornblade.png|A Thornblade
</gallery>

==Non-canon and dubious canon appearances==
===Fracture: Entrenched===
{{Notice/Fracture|Entrenched|category=no}}
Knives are used throughout the Entrenched [[Fractures|Fracture]]. Different types can be seen on the EAGLESTRIKE armors.
<gallery>
File:HINF Trench Knife Chest Icon.png|A trench knife attached to an [[Eaglestrike]] chestpiece.
File:HINF GROGNARDS LShoulder Icon.png|A combat knife attached to a Grognards shoulder.
File:HINF TWIN TEETH Utility Icon.png|2 combat knives part of the Twin Teeth utility.
</gallery>
===Fracture: Firewall===
{{Notice/Fracture|Firewall|category=no}}
The [[Executor]]s of the Firewall Fracture are sometimes equipped with resonating crysknives, which come in various sizes.
<gallery>
File:HINF Flayer Crysknife LShoulder icon.png|A Flayer Cryknife attached to a [[Chimera (armor)|Chimera]] shoulder.
File:HINF - Crysknife Utility utility icon.png|A resonating crysknife utility.
</gallery>
===Fracture: Tenrai===
{{Notice/Fracture|Tenrai|category=no}}
Knives are used throughout the Tenrai Fracture. Different types can be seen on the Yoroi armors.
<gallery>
File:HINF Kunai of the Hidden Hand Chest Icon.png|Throwing knives on the [[Yoroi]] Kunai of the Hidden Hand chestpiece.
File:HINF - Chest icon - Twin Dragons.png|Sais on the Twin Dragons chestpiece.
</gallery>
==Gameplay==
When performing an [[assassination]], any knives placed on armor will not be used. This can be seen in Theater: despite using a knife to assassinate your opponent, it still appears sheathed on your chest.

*The combat knives appear on the icons for [[Normal]], [[Heroic]], and [[Legendary]] difficulties of ''Halo: Combat Evolved'', ''Halo 2'', ''Halo 3'', and ''Halo: Reach ''(''[[Halo 3: ODST]]'' replaces them with [[M7S Caseless Submachine Gun|Suppressed SMGs]]).

==Gallery==
{{Linkbox|gallery=yes}}
<gallery>
File:ODST Knife.jpg|A combat knife holstered on an ODST's shoulder from ''[[Halo: Landfall]]''.
File:HTMCC-H3 CQB Closeup.jpg|An unknown type of knife on the [[CQB-class Mjolnir]] chestpiece in ''[[Halo 3]]''.
File:Buck Knife.png|Edward Buck wielding a combat knife as he is about to stab a [[Jiralhanae Chieftain]] in the neck, in ''[[Halo 3: ODST]]''.
File:ODST-BuckKnife.png|Detail of [[Edward Buck]]'s combat knife.
File:Fred Combat Knives Halo Legends.jpg|[[Frederic-104]] holding a pair of combat knives, his weapons of proficiency, in ''[[The Package (animated short)|The Package]]''.
File:TML - McCraw n Knife.png|[[James MacCraw]] holding his combat knife in ''[[The Mona Lisa]]''.
File:Headhunters - Knife.png|[[Jonah-B283]] wielding his combat knife in ''[[Headhunters (story)|Headhunters]]''.
File:Grenadier (Noble Team).jpg|[[Emile-A239]] sharpening his [[kukri]] in ''[[Halo: Reach]]''.
File:Reach 1504643 Full.jpg|An in-game screenshot of an [[M1 combat knife]].
File:H4-Lich knife.png|John-117 using his combat knife to grapple onto the hull of a {{Pattern|Kmiro'sish|Lich}}.
File:H4-TJMurphy.jpg|[[TJ Murphy]] equipped with a knife.
File:HE Scruggs killed.jpg|[[Sarah Palmer]] killing [[Vladimir Scruggs]] with a combat knife in ''[[Halo: Escalation]]''.
File:H2A ODST-CombatKnife.png|A combat knife holstered on an ODST's back in ''[[Halo 2: Anniversary]]''.
File:HCS Trailer - Assassination.png|A Spartan-IV using a combat knife on an opponent in the [[HCS]] season 2 trailer.
File:H5G-LockevsJul1.png|[[Jameson Locke]] killing [[Jul 'Mdama]] with a combat knife in ''[[Halo 5: Guardians]]''.
File:HTfS - Canon Fodder preview.jpg|John-117 killing a Sangheili Storm with a combat knife in ''[[Halo: Tales from Slipspace]]''.
File:HW2-Knivesstilldonothing.png|[[Douglas-042]]'s combat knife embedded in [[Atriox]]'s power armor in ''[[Halo Wars 2]]''.
File:HRoa 1 Showdown.png|Sergeant [[Kress]] using a combat knife in a final showdown with Atriox in ''[[Halo: Rise of Atriox]]''.
File:HInf Marine Knife.png|A UNSC Marine wearing a combat knife in ''[[Halo Infinite]]''.
File:HINF - Chest icon - TAC Letter Openers.png|Three combat knives on the MJOLNIR Mark VII TAC/Letter Openers chestpiece.
File:HINF - Left shoulder icon - TAC Thornblade Brace.png|2 Thornblades in a portable charger as part of the TAC/Thornblade Brace shoulder.
File:HINF Cut To The Quick Utility Icon.png|Three different knives as part of the Cut To The Quick utility.
File:HINF-LTACCrysFlatblade.png|A combat knife on the TAC/Crys flatblade shoulder.
File:HINF TAC CMA M-25 Chest Icon.png|A combat knife on the [[Rakshasa]] TAC/CMA M-25 chestpiece.
File:HINF UTIL Brace of Blades Utility Icon.png|Combat knives on the Brace of Blades utility.
File:HINF LifeguardDoc Chest Icon.png|A knife on the [[OSTEO combat engineering suit]] Lifeguard Doc chestpiece.
File:HINF - Chest icon - TAC-Dueling Gorget.png|A knife on the MJOLNIR Mark IV TAC/Dueling Gorget chestpiece.
File:HINF-IMAGaritaOmegaSykes.png|A knife on the IMA/Garita Omega Sykes shoulder.
File:HINF-TACGaritaOmega.png|A knife on the TAC/Garita Omega shoulder.
File:HINF - Left shoulder icon - TAC-Best Friend.png|A knife on the TAC/Best Friend shoulder.
File:HINF - Left shoulder icon - TAC-Sykes Delta.png|A knife on the TAC/Sykes Delta shoulder.
File:Enc22 Jai006.png|[[Jai-006]] equipped with a M1 knife.
File:Enc22 MarkG313.jpg|[[Mark-G313]] with an unknown type of knife.
File:HINF - Chest icon - UA Eloric.png|Knife on the [[UA attachments#Eloric|UA/Eloric]] chest.
</gallery>

==List of appearances==
{{Col-begin}}
{{Col-2}}
*''[[Halo: The Fall of Reach]]'' {{1st}}
*''[[Halo: The Flood]]''
*''[[Halo: First Strike]]''
*''[[Halo 2]]''
*''[[Halo: Ghosts of Onyx]]''
*''[[Halo 3]]''
*''[[Halo: The Cole Protocol]]''
*''[[Halo Wars]]''
*''[[Halo 3: ODST]]''
*''[[Halo Legends]]''
**''[[Homecoming]]''
**''[[The Package (animated short)|The Package]]''
*''[[Halo: Evolutions - Essential Tales of the Halo Universe]]''
**''[[The Mona Lisa]]''
**''[[Headhunters (short story)|Headhunters]]''
*''[[Halo: Reach]]''
*''[[Halo: Fall of Reach]]''
**''[[Halo: Fall of Reach - Invasion|Invasion]]''
*''[[Halo 4: Forward Unto Dawn]]''
*''[[Halo 4]]''
**''[[Spartan Ops]]''
*''[[Halo: Escalation]]''
*''[[Halo 2: Anniversary]]''
**''[[Terminal (Halo 2: Anniversary)|Terminals]]''
{{Col-2}}
*''[[Halo: New Blood]]''
*''[[Halo: Last Light]]''
*''[[Halo 5: Guardians]]''
*''[[Halo: Shadow of Intent]]'' {{Mo}}
*''[[Halo Mythos]]''
*''[[Halo: Tales from Slipspace]]''
**''[[On the Brink]]''
*''[[Halo: Smoke and Shadow]]''
*''[[Halo Wars 2]]''
*''[[Halo: Retribution]]''
*''[[Halo: Rise of Atriox]]''
*''[[Halo: Legacy of Onyx]]''
*''[[Halo: Bad Blood]]''
*''[[Halo: Fireteam Raven]]''
*''[[Halo: Official Spartan Field Manual]]''
*''[[Halo: Outpost Discovery]]''
*''[[Halo: Shadows of Reach]]''
*''[[Halo: Point of Light]]''
*''[[Halo: Divine Wind]]''
*''[[Halo Infinite]]''
*''[[Halo: The Rubicon Protocol]]''
*''[[Halo: Winter Contention]]''
*''[[Halo: Outcasts]]''
*''[[Halo: The Television Series Season Two]]''
**''[[Sanctuary (TV Series)|Sanctuary]]''
*''[[Halo: Flashpoint]]''
{{Col-end}}

==Sources==
{{Ref/Sources}}

{{Melee Weapons}}
{{Human sidearms}}

[[Category:UNSC infantry weapons]]