List of UNSC military units

The post-war emblem of the UNSC.

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

• Air Combat Command
  • 37th Tactical Fighter Wing
• Air Mobility Express

Army

Infantry

• 34th Infantry Brigade
  • 4th Regiment
  • 14th Regiment
  • 581st Regiment
  • 594th Regiment
  • 554th Battalion
  • 1337th Battalion

• 124th Infantry Brigade (Mechanized)
  • 1st Regiment
  • 6th Regiment
  • 13th Regiment
  • 47th Regiment
  • 127th Regiment
  • 501st Regiment

Armored

• 2nd Armored Division
• 23rd Armored Cavalry
• 53rd Armored Division
• 8th Armored Brigade
  • 37th Regiment
  • 38th Regiment
  • 3rd Battalion
  • 169th Company
  • 267th Company
  • 314th Company
  • 352nd Company
  • 371st Company
  • 465th Company

Unknown strength

• 1 Alpha
• 3 Charlie
• 3 Echo
• 4 Charlie
• 7 Charlie
• 7 Delta

Colonial Militia

• Harvest militia
  • 1st Platoon
    • One-Alpha Squad
    • One-Bravo Squad
    • One-Charlie Squad
  • 2nd Platoon
    • Second-Alpha Squad
    • Second-Charlie Squad
• Reach militia

Marine Corps

• 9th Marine Expeditionary Force
• 26th Marine Expeditionary Force

Armored

• 506th Tank Regiment

Infantry

• 21st Marine Division
  • 1st Battalion
• 12th Marine Regiment
  • 1st Battalion 12th Marines
  • 3rd Battalion 12th Marines
  • 4th Battalion 12th Marines
  • 5th Battalion 12th Marines
• 77th Marine Regiment
• 79th Infantry Battalion
• E2-BAG/1/7
• S4/BRT/1/7
  • Alpha Company
    • Second Squad
  • Charlie Company

Orbital Drop Shock Troopers

• 105th Drop Jet Platoon
• 105th Shock Troops Division
  • 2nd Shock Troops Battalion
    • Alpha Team
  • 7th Shock Troops Battalion
    • First Platoon
  • 11th Shock Troops Battalion
  • 19th Shock Troops Battalion
  • 11th Marine Force Reconnaissance/ODST
  • 22nd Tactical
  • 22nd Shock Troops Battalion
  • Bullfrogs

Small Units

Companies

• A Company
• Charlie Company
• Tango Company
• Warbird Company

Platoons

• Second Platoon
• Fifth Platoon
• Fourteenth Platoon

Squads

• First Squad
• Second Squad

Fireteams

• Fire Team Charlie
• Fire Team Zulu
• Bravo Team

Unknown strength

• Alpha Six
• Charlie Two
• Combat Team Alpha
• Combat Team November
• Combat Team Sierra
• Combat Team Victor
• S4/BAG/2/5
• S4/BLCE/1/7

Navy

Combatant Fleet

• Epsilon Eridani Fleet
• Home Fleet
  • Second Fleet
  • Seventh Fleet
  • Sixteenth Fleet
  • Patterson's battle group
  • Sol Defense Group 3/A-5
  • Sixth Battle Group
• Battle Group 4
• Battle Group D
• Battle Group Phi
• 23^rd Naval Air Squadron

Naval Special Warfare

• SPARTAN-II Project
  • Black Team
  • Blue Team
  • Gray Team
  • Green Team
  • Red Team
    • Team Alpha
    • Team Beta
    • Team Gamma
    • Team Delta
    • Team Omega

• SPARTAN-III battalion
  • Alpha Company
  • Beta Company
  • Gamma Company
  • Delta Company
  • Noble Team
  • Gauntlet Team
  • Echo Team

Office of Naval Intelligence

• ONI Recon 111
• Strategic Response Unit

Possible joint units

• Sol Defense Group 3/A-5