The 18th Strategic Aerospace Division is an inactive United States Air Force unit. Its last assignment was with the Fifteenth Air Force at Fairchild Air Force Base, Washington, where iIt was inactivated on 2 July 1968.
The 18th Composite Wing served as part of the defense force for the Hawaiian Islands from 1 May 1931 – 29 January 1942. It inactivated after suffering disastrous losses in the Japanese attack on Pearl Harbor (7 December 1941).
From June 1942 until 1944, it operated as the 18th Replacement Wing, processing personnel entering Second Air Force.
Redesignated as the 18th Air Division on 1 July 1959, it assured that assigned wings were organized, manned, trained, and equipped to conduct long-range bombardment operations using either nuclear or conventional weapons.
Redesignated 18 Strategic Aerospace Division on 15 February 1962, the division also developed and maintained a strategic missile operational capability. Between 1965 and 1968, subordinate units of the 18th loaned aircraft and aircrews to SAC organizations in Southeast Asia for combat operations.
Inactivated on 2 July 1968 due to budget constraints.
Established as the 18th Composite Wing on 8 May 1929
Activated on 1 May 1931
Redesignated
18th Wing on 1 September 1937
Redesignated
18th Bombardment Wing on 19 October 1940
Inactivated on 29 January 1942
Redesignated 18th Replacement Wing on 17 June 1942
Activated on 23 June 1942
Disestablished on 11 April 1944
Reestablished and redesignated 18th Air Division on 20 May 1959
Activated on 1 July 1959
Redesignated
18th Strategic Aerospace Division on 15 February 1962
Discontinued and inactivated on 2 July 1968
Hawaiian Department, 1 May 1931
Hawaiian Air Force, 1 November 1940 – 29 January 1942
Second Air Force, 23 June 1942 – 11 April 1944
Fifteenth Air Force, 1 July 1959 – 2 July 1968
Wings
6th Strategic Wing: 25 March 1967 – 2 July 1968
91st Bombardment Wing: 1 July 1963 – 1 September 1964
92d Bombardment Wing (later 92 Strategic Aerospace Wing): 1 July 1959 – 2 July 1968
320th Bombardment Wing: 1 July 1965 – 2 July 1966
341st Strategic Missile Wing: 2 July 1966 – 2 July 1968
462d Strategic Aerospace Wing: 1 February 1963 – 25 June 1966
4157th Strategic Wing: 1 July 1965 – 25 March 1967
4158th Strategic Wing: 1 July 1965 – 25 June 1966
4170th Strategic Wing: 1 July 1959 – 1 February 1963
Groups
5th Composite Group (later, 5 Bombardment Group): 1 May 1931 – 29 January 1942
11th Bombardment Group: 1 February 1940 – 29 January 1942
18th Pursuit Group: 1 May 1931 – 1 November 1940
Fort Shafter, Hawaii, 1 May 1931
Hickam Field, Hawaii Territory, 30 October 1937 – 29 January 1942
Salt Lake City, Utah, 23 June 1942 – 11 April 1944
Fairchild Air Force Base, Washington, 1 July 1959 – 2 July 1968