"A" Company

"A" Company is an Infantry Company, under the overall command of the 405th Marine Infantry Division in the UNSC Marine Corps. It was present during the Battle of New Mombasa, Battle of Installation 05, and some of the Battle of High Charity. Currently, since their unnamed Company CO is injured, it is being commanded by Sergeant Banks, and Gunnery Sergeant Pete Stacker.

Trivia

 * Though it's Battalion and Regiment, haven't been stated. It's speculated that it's in a battalion under the command of the 77th Marine Regiment.
 * Also it's unclear if "A" stands for "Alpha", or "Able".