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The ancient rank of '''Captain''' has been employed since the days of the [[Space Marine Legion]]s. During the [[Great Crusade]] a '''Company Captain''' was a military rank given to the commander of a [[Space Marine Company|Company]], a command level between [[Battalion]] and [[Tactical Squad|Squad]], leading a force of a hundred Legionaries. Depending on the Legion, the designation would vary and could be ''Centurion, Prime, Wolf Lord, Blooded, Khan'', etc...{{Fn|3a}}

With the institution of the [[Codex Astartes]], the rank of '''Captain''' as Commander of a Company remained and is still in use in the current Eraera.{{Fn|2a}}

==Role and Responsibilities ==In a Space Marine Chapter, each company is under the authority of a '''Captain''', seasoned veterans and expert strategists, who have proven their combat skills either in the Chapter's elite 1st Company or through exceptional service in their own company. The '''Captain'''’s Captain’s guidance increases the value of his battle-brothers tenfold, and he justifies their faith in him with every command.{{Fn|1a}}

Typically, the senior-most '''Captain''' commands the First Company and often serves as second-in-command to the [[Chapter Master]] and as their immediate successor.{{fn|9}}{{Fn|1010a}} In addition, some chapters, such as the [[Salamanders]]{{Fn|7}} and the [[Space Wolves]]{{Fn|12a}}, the [[Chapter Master]] is at once the leader of the entire chapter and of his own company of marines.

A '''Captain''' isn't just a warrior; they must also possess the ability to persuade and negotiate. Though '''Captains''' are capable of decisive action, they understand the importance of subtlety in certain situations. Besides their rank, '''Captains''' also carry honorific titles related to their duties as a [[Master (Space Marine)|Master]], responsible for an area of Chapter logistics or organization.{{Fn|1a}}

'''Captains''' have access to the best equipment available to a Chapter, such as [[Artificer Armour]], [[Terminator Armour]] and [[Terminator_Armour#Armament|weapon]]s{{Fn|1e}}, [[Gravis Armour]]{{Fn|14b}}, [[Power Fist]], [[Relic Blade|Relic weapon]]s, [[Thunder Hammer]], , [[Jump Pack]]s and [[Space Marine Bike|Bike]]s.{{Fn|1e}}

'''Captains''' assigned to [[Vanguard Space Marine]] formations will typically adopt stealth tools such as [[Omni-Scrambler]]s, lightweight [[Phobos Armour]], and master-crafted [[Instigator Bolter]]s.{{Fn|13}}

==Chapter Variations ==Within many chapters, the '''Captain''' is sometimes referred to as "Brother-Captain" in recognition that all marines within the chapter are brethren. Several chapters refer to their Company Captains by different titles:

|align="center"|Iron Captain{{Fn|11}} or Clan-Commander{{Fn|2520}}

|align="center"|[[Watch Captain]]{{Fn|1715}}

*{{Mainmain|List of Space Marine Captains}}

**[[Sevastus Acheran]] - Captain of the [[2nd Company (Ultramarines)|2nd Company]]{{Fn|18b16b}}**[[Cato Sicarius]] - Former Captain of the [[2nd Company (Ultramarines)|2nd Company]] and [[High Suzerain of Ultramar]]{{Fn|18a16a}}**[[Uriel Ventris]] - Captain of the [[4th Company (Ultramarines)|4th Company]]{{Fn|18b16b}}

**[[Ragnar Blackmane]] - [[Wolf Lord]] of the [[Blackmanes]]{{Fn|1912b}}**[[Harald Deathwolf]] - [[Wolf Lord]] of the [[Deathwolves]]{{Fn|1912b}}**[[Krom Dragongaze]] - [[Wolf Lord]] of the [[Drakeslayers]]{{Fn|1912b}}**[[Sven Bloodhowl]] - [[Wolf Lord]] of the [[Firehowlers]]{{Fn|1912b}}

**[[Karlaen]] - Captain of the [[1st Company(Blood Angels)|1st Company]]{{Fn|20b10b}}**[[Erasmus Tycho]] - Former Captain of the [[3rd Company(Blood Angels)|3rd Company]]{{Fn|20a10c}}

**[[Belial]] - [[Grand Master of the Deathwing]]{{Fn|2117}}**[[Sammael]] - [[Master of the Ravenwing]]{{Fn|2117}}**[[Lazarus (Dark Angels)|Lazarus]] - Master of the [[5th Company(Dark Angels)|5th Company]]{{Fn|3328}}

**[[Kor'sarro Khan]] - Khan of the [[3rd Company (White Scars)|3rd Company]] and [[Master of the Hunt]]{{Fn|1d}}

**[[Darnath Lysander]] - Captain of the [[1st Company (Imperial Fists)|1st Company]]{{Fn|1c}}**[[Tor Garadon]] - Captain of the [[3rd Company(Imperial Fists)|3rd Company]]{{Fn|2318}}**[[Taelos]] - Captain of the [[10th Company(Imperial Fists)|10th Company]]{{Fn|2419}}

**[[Adrax Agatone]] - Captain of the [[3rd Company(Salamanders)|3rd Company]]{{Fn|3227}}**[[Ur'zan Drakgaard]] - Captain of the [[6th Company(Salamanders)|6th Company]]{{Fn|3126}}

**[[Kyrin Solaq]] - Shadow-Captain of the [[5th Company(Raven Guard)|5th Company]]{{Fn|2621}}

**[[Marius Amalrich]] - [[Black Templars Marshal|Marshal]]{{Fn|2924}}

**[[Arvann Stern]] - [[Grey Knights Brother-Captain|Brother-Captain]] of the [[3rd Brotherhood (Grey Knights)|3rd Brotherhood]]{{Fn|2722}}

**[[Artemis]] - [[Kill-Team]] [[Watch Captain]]{{Fn|2823}}

**[[Casan Sabius]]{{Fn|3025}}

Graviscaptain.jpg|[[Primaris]] Captain in [[Gravis Armor#Mark X "Tacticus Armour"|Gravis Armor]] (9th Ed.){{Fn|4030}}Primaris Captain.jpg|[[Primaris]] Captain with [[Relic Shield]] (9th Ed.){{Fn|3429}}

TermieCaptain.jpg|Captain in [[Terminator Armour]] (10th Ed.){{Fn|4232}}CaptainTerminator2023.jpg|Captain in [[Terminator Armour]] (10th Ed.){{Fn|4131}}

<div style="column-count:2;font-size:90%">*'''1''': [[Codex: Space Marines (5th Edition)]], 2008:

*'''2''': [[Codex: Ultramarines(2nd Edition)]], 1994:

*{{Endn|6}}: [[Codex: Grey Knights (5th Edition)]], {{Cite This}}pg. 12

*{{Endn|10}}: [[Codex: Blood Angels (5th Edition)]], :**{{Endn|10a}}: pg. 8**{{Endn|10b}}: pg. 9**{{Endn|10c}}: pg. 41

**{{Endn|12b}}: pgpgs. 16-17

*'''14''': [[Codex: Space Marines (8th Edition, 2nd Codex)]]

*{{Endn|15}}: [[Codex: Grey Knights (5th Edition)]] pg.66*{{Endn|16}}: [[Codex: Dark Angels (4th Edition)]], pg. 14*{{Endn|17}}: [[Codex: Deathwatch (7th Edition)]], pg. 16*1816: [[Dark Imperium (Novel)]]**{{Endn|18a16a}}: Chapter 12**{{Endn|18b16b}}: Chapter 20*{{Endn|19}}: [[Codex: Space Wolves (5th Edition)]] pg.16-17*20: [[Codex: Blood Angels (5th Edition)]]**{{Endn|20a}}: pg. 41**{{Endn|20b}}: pg. 9*{{Endn|21}}: [[Codex: Dark Angels (6th Edition)]], pg. 78*{{Endn|2318}}: [[Sentinels of Terra - A Codex: Space Marines Supplement (6th Edition)]] - ''The 3rd Company's Triumphs''*{{Endn|2419}}: [[Codex: Space Marines (4th Edition)]], pg. 81*{{Endn|2520}}: [[Clan Raukaan - A Codex: Space Marines Supplement]]: - ''The Gaudinian Heresy''*{{Endn|2621}}: [[War Zone Damocles: Kauyon]], pg. 29*{{Endn|2722}}: [[Codex: Grey Knights (7th Edition)]] — ''Chapter Organisation''*{{Endn|2823}}: [[White Dwarf 257 (UK)]], pgs. 94–95*{{Endn|2924}}: [[Gathering Storm: Fall of Cadia]], Chapter 3*{{Endn|3025}}: [https://web.archive.org/web/20230510213633/https://www.warhammer-community.com/2017/11/20/new-heroes-warhammer-40000-coming-soon/ Warhammer Community: New Heroes for Warhammer 40,000 Coming Soon – 20/11/2017] {{Archive|20230510213633|15:39, 9 July 2024 (UTC)}}*{{Endn|3126}}: [[Rebirth (Novel)]] - , Chapter 1*{{Endn|3227}}: [[Salamander (Novel)]], Chapter 4, Part II*{{Endn|3328}}: [https://web.archive.org/web/20240708170024/https://www.warhammer-community.com/2019/12/25/happy-christmas-from-warhammer-communitygw-homepage-post-1/ Warhammer Community: Merry Christmas, From Warhammer Community! – 12/25/2019] {{Archive|20240708170024|15:39, 9 July 2024 (UTC)}}*{{Endn|3429}}: [https://web.archive.org/web/20240708170225/https://www.warhammer-community.com/2020/06/13/warhammer-40000-preview-whats-in-the-boxgw-homepage-post-1/ Warhammer Community: Warhammer 40,000 Preview – What’s in the Box? – 13/06/2020] {{Archive|20240708170225|15:39, 9 July 2024 (UTC)}}*{{Endn|35}}: [https://web.archive.org/web/20201006132416/https://www.warhammer-community.com/2020/09/12/the-codex-show/ Warhammer Community: The Codex Show (posted 9/12/2020)] {{Archive|20201006132416|17:07, 9 July 2024 (UTC)}}*{{Endn|36}}: [[Warhammer 40,000 2nd Edition Rulebook]] pg.56*{{Endn|37}}: [[Space Marine Collectors Compendium]] pg.21**{{Endn|37a}}: pg.26*{{Endn|38}}: [[Warhammer 40,000: Assault on Black Reach]]*{{Endn|39}}: [https://web.archive.org/web/20240708170426/https://www.warhammer-community.com/2021/08/18/build-up-a-truly-massive-collection-of-miniatures-with-the-new-warhammer-40000-imperium-magazine/ Warhammer Community: Build Up a Truly Massive Collection of Miniatures with the New Warhammer 40,000: Imperium Magazine – 8/18/2021] {{Archive|20240708170426|15:39, 9 July 2024 (UTC)}}*{{Endn|4030}}: [https://web.archive.org/web/20211220174447/https://www.warhammer-community.com/2021/12/20/this-gravis-armoured-captain-is-ready-to-fight-his-way-through-the-christmas-shopping-queues/ Warhammer Community : This Gravis-Armoured Captain is Ready to Fight His Way Through the Christmas Shopping Queues – 20/12/2021] {{Archive|20211220174447|15:39, 9 July 2024 (UTC)}}*{{Endn|4131}}: [https://web.archive.org/web/20240209070551/https://www.warhammer-community.com/2023/08/31/nova-open-previews-space-marine-terminators-fire-up-the-teleport-homer-and-prepare-for-rapid-ingress/ Warhammer Community: NOVA Open Previews – Space Marine Terminators Fire Up the Teleport Homer and Prepare for Rapid Ingress – 8/31/2023] {{Archive|20240209070551|15:39, 9 July 2024 (UTC)}}*{{Endn|4232}}: [https://web.archive.org/web/20230831175141/https://www.warhammer-community.com/2023/08/31/nova-open-previews-jump-packs-send-captains-and-assault-intercessors-soaring-into-the-sky/ Warhammer Community: NOVA Open Previews – Jump Packs Send Captains and Assault Intercessors Soaring Into the Sky – 31/8/2023] {{Archive|20230831175141|17:07, 9 July 2024 (UTC)}}</div>