It moved to Great Bend Army Air Field, Kansas in December 1943 to begin training. Due to a shortage of B-29s, the group was equipped with former II Bomber Command B-17 Flying Fortresses already at Great Bend which were previously used for training heavy bomber replacement personnel. In the spring of 1944, it finally received newly manufactured B-29 Superfortresses. In May shortages in aircraft and equipment led to the 876th Bomb Squadron being inactivated (10 May 1944), with its personnel being consolidated into other group squadrons (the 880th would be reactivated in August as part of the 383d Bombardment Group).