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UNSC Ground Command
Chronological Information



Unified Earth Government


UNSC Defense Force


Ground Operations


Land-based Warfare


The UNSC Ground Command, occasionally called Unified Ground Command and colloquially known as UNICOM, is a unified command organization of the UNSC Defense Force and subordinate to the High Command, alongside its sister organizations, the Naval Command and Special Warfare Command. It is responsible for all ground and aerial operations, and in charge of all Army, Air Force and mainstream Marine Corps personnel.



  • Marine Command (MARCOM) - Responsible for the Marine Corps, the Marine Command handles all of the branch's operations, which mostly involve offensive UNSC infantry operations and defense/security of Navy structures and bases, working closely alongside and generally being subordinate to FLEETCOM.
  • Army Command (ARCOM) - The Army Command is in charge of managing the Army and its operations, mainly garrisoning UNSC worlds or, on rare occasions, invasion operations alongside the Marine Corps, though the latter is very uncommon.
    • Colonial Militia (CM) -
  • Air Force Command (AFCOM) - Though in decline due to many of its personnel and aircraft going to other branches of the UNSC Defense Force, the Air Force still exists and is managed by the Air Force Command, managing dropships, gunships and fighter jets. Thus, they are responsible for carrying out air strikes, and transport marine and army troops and equipment.

Subordinate units

Notable Personnel