 In the postwar years, the command was part of Air Defense Command assigned as a reserve wing assigned to First Air Force from 1946 to 1949.Rectivated in 1951 as an intermediate command echelon of Strategic Air Command, the 4th Air Division was part of Second Air Force, controlling B-29, Boeing B-50 Superfortress and B-47 wings.In 1962, units controlled by the 4th Air Division supported 2d Air Force's post attack command and control system, and became responsible for the Advanced Airborne Command Post.