42nd Bombardment Group (42nd BG) "The Crusaders"
U.S. Army Air Force (USAAF), 13th Air Force (13th AF)

Background
The 42nd Bombardment Group (42nd BG) was part of the U.S. Army Air Force (USAAF). Includes Headquarters Squadron (HQ), 69th Bombardment Squadron (69th BS), 70th Bombardment Squadron (70th BS), 75th Bombardment Squadron (75th BS) and 390th Bombardment Squadron (390th BS). Nicknamed "The Crusaders". On December 14, 1942 became part of the 13th Air Force (13th AF).

Headquarters Squadron (HQ)
On April 22, 1943 the 42nd Bombardment Group, Headquarters Squadron arrives on Fiji. On June 6, 1943 transfers to Henderson Field on Guadalcanal. On October 22, 1943 moves to Renard Field in the Russell Islands. On January 20, 1944 transfers to Stirling Airfield in the Treasury Islands.

69th Bombardment Squadron (69th BS)
The 69th Bombardment Squadron originally part of the 38th Bombardment Group (38th BG), 5th Air Force.

70th Bombardment Squadron (70th BS)
The 70th Bombardment Squadron (Medium) originally part of the 38th Bombardment Group (38th BG), 5th Air Force.

75th Bombardment Squadron (75th BS)
The 70th Bombardment Squadron (Medium) operated in the South Pacific (SoPAC).

106th Reconnaissance Squadron (106th RS)
During January 1944 attached to the 42nd Bombardment Group (42nd BG) on May 9, 1944 redesignated 100th Bombardment Squadron.

100th Bombardment Squadron (100th BS)
On May 9, 1944 the 106th Reconnaissance Squadron (106th RS) was redesignated as the 100th Bombardment Squadron (100th BS).

390th Bombardment Squadron (390th BS)
The 390th Bombardment Squadron (390th BS).

References
The Crusaders A History of the 42nd Bombardment Group (M) (1946) unit history of the 42nd Bomb Group