This is a comprehensive list of all known military units of the UNSC Armed Forces and its suborganizations. For information on how UNSC Armed Forces units are organized, see here.
This list does not include individual starships. See here for a list of starships.
Air Force
Army
Infantry
Armored
Unknown strength
Colonial Militia
Marine Corps
Armored
Infantry
- 21st Marine Division
- 12th Marine Regiment
- 17th Marine Regiment
- 77th Marine Regiment
- 79th Infantry Battalion
- E2-BAG/1/7
- S4/BRT/1/7
Orbital Drop Shock Troopers
Small Units
Companies
Platoons
Squads
Fireteams
Unknown strength
Combatant Fleet
- Epsilon Eridani Fleet
- Home Fleet[1]
- Battlegroup 4
- Battlegroup D
- Battlegroup Phi
- 23rd Naval Air Squadron[5]
- SPARTAN-II Project