Its last assignment was with Second Air Force, at Colorado Springs Army Air Base, Colorado, where it was inactivated on 9 April 1946.

The wing was activated at March Field, California in December 1940 and assigned to the Southwest Air District.

Its operational components were the 47th and 48th Bombardment Groups[1] In September 1941, the wing was inactivated and its personnel used to form the 4th Air Support Command.

[2] It trained groups and heavy bombardment replacement crews for Second Air Force June 1942 until February 1945 when it ceased all activity.

[1] This article incorporates public domain material from the Air Force Historical Research Agency