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There is more information available on this subject at Battalion on the English Wikipedia.
Marines of First Battalion, Seventh Marine Regiment in Mombasa.

A battalion is a military unit of the UNSC Army and Marine Corps.


A battalion is comprised of four companies, plus a group of personnel assigned as "Battalion Headqaurters Section", for 800 men in total.[1] Under the UNICOM rank structure, a battalion is commanded by an O-5 Lieutenant Colonel, with an O-4 Major serving as a battalion's Executive Officer (XO).[2] The battalion will also have a "first sergeant", usually a Gunnery Sergeant[1], First Sergeant[2] or above.[1] Three battalions comprise a Regiment.[1]

Within a regiment, the battalions are named numerically, beginning with First battalion and ending with Third battalion. The battalion's subordinate companies are named phonetically, "A" (Alpha) through "M" (Mike), skipping "J". First battalion's companies comprise A through D, Second battalion's companies E through H and and Third Battalion companies I through M.[1]

In the UNSC Army, Battalions allocate Fire Support Teams as part of the battalion's offensive/ defensive plans. Their loadout is usually tailored to their mission, terrain, and expected enemy composition. In defensive operations they provide overwatching support-by-fire, while on the offense they engage enemy vehicles and heavy infantry.[3]

Known Battalions[edit]

List of appearances[edit]


  1. ^ a b c d e Halo Encyclopedia, p. 55 (2009 and 2011)
  2. ^ a b Halo: Official Spartan Field Manual, PART 8: UNSC ORGANISATION, UNICOM Ranks (p. 142-143)
  3. ^ Halo Waypoint: Canon Fodder: Summer Red, Summer Blue
  4. ^ Halo: Spartan Assault (Quotes)
  5. ^ Halo: Warfleet – An Illustrated Guide to the Spacecraft of Halo - Early revision of the Pillar of Autumn page (file link)
  6. ^ Halo: Contact Harvest, page 111