Division status during the Korean War. Combat Divisions on Active Duty During the Korean War Division | Component | 1st Armored | Regular Army | 1st Cavalry | Regular Army | 1st Infantry | Regular Army | 2d Armored | Regular Army | 2d Infantry | Regular Army | 3d Infantry | Regular Army | 4th Infantry | Regular Army | 7th Infantry | Regular Army | 11th Airborne | Regular Army | 24th Infantry | Regular Army | 25th Infantry | Regular Army | 28th Infantry | National Guard | 31st Infantry | National Guard | 37th Infantry | National Guard | 40th Infantry | National Guard | 43d Infantry | National Guard | 44th Infantry | National Guard | 45th Infantry | National Guard | 47th Infantry | National Guard | 82d Airborne | Regular Army |
Infantry Divisions were brought into federal service in early 1952, but the twenty-first division was not federalized or activated because of budgetary limitations. Thus the Korean War and the Cold War mobilization peaked at twenty divisions Regular Army Training Divisions, 1950-56 Division | Location | Remarks | 3d Armored1 | Fort Knox, Ky. | Reorganized as a combat division in 1955 | 4th Infantry1 | Fort Ord, Calif | Reorganized as a combat division in 1950 | 5th Armored | Camp Chaffee, Ark. | Activated in 1950; inactivated in 1956 | 5th Infantry | Indiantown Gap Military Reservation, Pa. | Activated in 1951; inactivated in 1953 | 6th Armored | Fort Leonard Wood, Mo. | Activated in 1950; inactivated in 1956 | 6th Infantry2 | Fort Ord, Calif | Activated in 1950; inactivated in 1956 | 7th Armored | Camp Roberts, Calif | Activated in 1950; inactivated in 1953 | 8th Infantry | Fort Jackson, S.C. | Activated in 1950; reorganized as a combat division in 1954 | 9th Infantry1 | Fort Dix, N.J. | Reorganized as a combat division in 1954 | 10th Infantry l | Fort Riley, Kans. | Reorganized as a combat division in 1954 | 69th Infantry3 | Fort Dix, N.J. | Activated in 1954 | 101st Airborne | Camp Breckinridge, Ky. | Activated in 1950; inactivated in 1953; activated in 1954; reorganized as a combat division in 1956 |
1 Activated before 1950. 2 Replaced the 4th Infantry Division. 3 Replaced the 9th Infantry Division. 1) The preceding charts are courtesy of the Center of Military History (Army Lineage Series), "Maneuver and Firepower" | 
