These support personnel were then pooled and re-distributed among an unofficial service group and detailed for various duties as needed.
The service group provided support and technical sections for the group requirements as a whole: Flying control, Ordnance, airfield security, firefighting, Post Exchange (PX), Special Services, Mail, Transportation ("motor pool"), Communications, Radar, Gunnery instruction, Personal Equipment, and Weather (Meteorology).
The group headquarters contained sections organized in the traditional U.S. Army structure: Personnel (S-1), Intelligence (S-2), Operations (S-3), and Supply (S-4).
Including inspectors, headquarters organizations in practice totalled approximately 20 officers, some of whom were also pilots, and 60 to 80 enlisted men.
Each bomb squadron, in addition to its assigned flight crews, had a squadron headquarters structured similarly to the group's, and six technical support and maintenance sections supporting its aircraft, equipment, and personnel: Mess, Armament, Ordnance, Communications, Medical, and Engineering (aircraft maintenance).