| AA |
Antiaircraft (or Antiaircraft artillery) |
| AAFSAT |
AAF School of Applied Tactics |
| AAFTAC |
AAF Tactical Center |
| ABC |
American-British Conversations (January—March 1941) |
| AC/AS |
Assistant Chief of Air Staff |
| ACER |
Air Corps Enlisted Reserve |
| AF CC |
Air Force Combat Command |
| AGCT |
Army General Classification Test |
| AGF |
Army Ground Forces |
| AGP |
Aircraft grounded for lack of parts |
| AM |
Air Marshal |
| ANSCOL |
Army-Navy Staff College |
| APB |
Aircraft Production Board |
| ARCO |
Aircraft Resources Control Office |
| ASC |
Air Service Command |
| ASF |
Army Service Forces |
| ASWAAF |
Arms and Services with the AAF |
| ATC |
Air Transport Command |
| ATSC |
Air Technical Service Command |
| AVM |
Air Vice-Marshal |
| AWPD |
Air War Plans Division |
| AWS |
Aircraft warning service |
| AWUTC |
Aircraft Warning Unit Training Center |
| BTC |
Basic training center |
| BTO |
Bombing through overcast |
| CAA |
Civil Aeronautics Administration (or Authority) |
| CAF |
Continental Air Forces |
| CARW |
Civilian air-raid warning system |
| CBI |
China-Burma-India |
| CCS |
Combined Chiefs of Staff |
| CCTS |
Combat crew training school (or station) |
| CIO |
Congress of Industrial Organizations |
| COA |
Committee of Operations Analysts |
| CTD |
Consolidated training directive |
| CWS |
Chemical Warfare Service |
| DAO |
Defense Aid Organization |
| D/F |
Direction finding |
| EDC |
Eastern Defense Command |
| ETO |
European Theater of Operations |
| FSS |
Field Service Section |
| G CI |
Ground-controlled interception |
| GEE |
Government-furnished equipment |
| GHQ |
General Headquarters |
| IF |
High frequency |
| IFF |
Identification friend or foe |
| JAC |
Joint Aircraft Committee |
| JCS |
Joint Chiefs of Staff |
| JWPC |
Joint War Plans Committee |
| MA |
Mechanical aptitude test |
| MAC |
Munitions Assignments Committee (Air) |
| M&S |
Materiel and Services |
| MIT |
Massachusetts Institute of Technology |
| MM&D |
Materiel, Maintenance, and Distribution |
| MTO |
Mediterranean Theater of Operations |
| MTU |
Mobile training unit |
| NACA |
National Advisory Committee for Aeronautics |
| NDAC |
National Defense Advisory Commission |
| NDRC |
National Defense Research Committee |
| NEI |
Netherlands East Indies |
| OCAC |
Office, Chief of Air Corps |
| OC&R |
Operations, Commitments, and Requirements |
| OCS |
Officer candidate school |
| OPD |
Operations Division (War Department General Staff) |
| OPM |
Office of Production Management |
| ORD |
Overseas replacement depot |
| OSRD |
Office of Scientific Research and Development |
| OTS |
Officer training school |
| OTU |
Operational training unit |
| PAA |
Pan American Airways System |
| PDC |
AAF Personnel Distribution Command |
| POE |
Port of embarkation |
| POM |
Preparation for overseas movement |
| RAF |
Royal Air Force |
| RCAF |
Royal Canadian Air Force |
| ROM |
Radio operator-mechanic |
| RTU |
Replacement training unit |
| SCR |
Signal Corps Radio |
| SOS |
Services of Supply |
| SPOG |
Special Observer Group |
| SWPA |
Southwest Pacific Area |
| TAG |
The Adjutant General |
| T/O |
Table of organization |
| TORCH |
Allied landings in North and Northwest Africa, November 1942 |
| TTC |
Technical Training Command |
| UR |
Unsatisfactory Report |
| VHB |
Very heavy bomber |
| VHF |
Very high frequency |
| VLR |
Very long range |
| WAAC |
Women's Army Auxiliary Corps |
| WASP |
Women Airforce Service Pilots |
| W/C |
Wing Commander |
| WCTC |
West Coast Training Center |
| WD |
War Department |
| WDGS |
War Department General Staff |
| WPA |
Works Progress Administration |
| WPB |
War Production Board |
| WPD |
War Plans Division |
| ZEC-2 |
Airplane carrier (converted C-3 type cargo vessel) |