321st
321st Air Expeditionary Wing
321st Engineer Battalion (United States)
321st Field Artillery Regiment
321st Sustainment Brigade (United States)
321st Missile Squadron
321st Air Refueling Squadron
321st Rifle Division
321st Special Tactics Squadron
321st Fighter-Interceptor Squadron
321st Infantry Division (Wehrmacht)
321st Armored Cavalry Regiment
321st Cavalry Regiment (United States)
3rd Battalion, 321st Field Artillery Regiment
1st Battalion, 321st Field Artillery Regiment
2nd Battalion, 321st Field Artillery Regiment
321st Missile Wing LGM-30 Minuteman Missile Launch Sites
310th Sustainment Command (Expeditionary)
Last batch of Imperial Japanese Army Divisions
1st Forfarshire Artillery Volunteers