Redesignated 452 Bombardment Group, Very Heavy on 11 March 1947.
Activated in the Reserve on 19 April 1947.
Redesignated 452 Bombardment Group, Light on 27 June 1949.
Trained as a bombardment group under supervision of the 2347th Air Force Reserve Training Center.
Ordered to active duty effective 10 August 1950 for duty in the Korean War under the 5th Air Force.
Moved to Japan, October–November 1950, and entered combat with B-26 Invader light bombers against communist forces late in Oct, operating first from bases in Japan and later from South Korea.
Flew armed reconnaissance, intruder, and interdiction missions, and provided support for ground troops.
Bombed and strafed buildings, tunnels, rail lines, switching centers, bridges, vehicles, supply dumps, and airfields until May 1952 when its mission was taken over by the regular USAF 17th Bombardment Group (Light).
The group received two Distinguished Unit Citations (Presidential Unit Citations)for its actions during the Korean War.

Returned to the United States and placed back in reserve status.
The unit was remanned and trained as a tactical reconnaissance group, (452 Tactical Reconnaissance Group) 1952–1955; as a tactical bombardment group (452 Bombardment Group, Tactical), 1955–1957; and as a troop carrier group, (452 Troop Carrier Group, Medium) 1957–1959.
Redesignated 452 Bombardment Group, Very Heavy on 11 March 1947. Activated in the Reserve on 19 April 1947. Redesignated 452 Bombardment Group, Light on 27 June 1949. Trained as a bombardment group under supervision of the 2347th Air Force Reserve Training Center. Ordered to active duty effective 10 August 1950 for duty in the Korean War under the 5th Air Force. Moved to Japan, October–November 1950, and entered combat with B-26 Invader light bombers against communist forces late in Oct, operating first from bases in Japan and later from South Korea. Flew armed reconnaissance, intruder, and interdiction missions, and provided support for ground troops. Bombed and strafed buildings, tunnels, rail lines, switching centers, bridges, vehicles, supply dumps, and airfields until May 1952 when its mission was taken over by the regular USAF 17th Bombardment Group (Light). The group received two Distinguished Unit Citations (Presidential Unit Citations)for its actions during the Korean War.
Returned to the United States and placed back in reserve status. The unit was remanned and trained as a tactical reconnaissance group, (452 Tactical Reconnaissance Group) 1952–1955; as a tactical bombardment group (452 Bombardment Group, Tactical), 1955–1957; and as a troop carrier group, (452 Troop Carrier Group, Medium) 1957–1959.
452nd Operations Group