| AAF | Army Air Forces |
| ABC | American-British Conversations |
| ACofS | Assistant Chief of Staff |
| Adm | Administrative, administration, Admiral |
| Adm O | Administrative Order |
| AEF | American Expeditionary Forces (1917-18) |
| AG | Adjutant General |
| AGF | Army Ground Forces |
| AGWAR | Adjutant General, War Department |
| ANEPA | Army-Navy Electronics Production Agency |
| ANMB | Army and Navy Munitions Board |
| Appen | Appendix |
| AR | Army Regulations |
| ARGONAUT | International conference held at Malta and Yalta, 30vJanuary-9 February 1945 |
| ASF | Army Service Forces |
| Asst | Assistant |
| ASW | Assistant Secretary of War |
| Atchd | Attached |
| Bd | Board |
| BOLERO | The build-up of troops and supplies in the United Kingdom in preparation for a cross-Channel attack. |
| BPR | Bureau of Public Relations, War Department |
| Br | Branch |
| Bull | Bulletin |
| CBI | China, Burma, and India |
| CCS | Combined Chiefs of Staff |
| CD | Control Division, Army Service Forces |
| CG | Commanding General |
| Chm | Chairman |
| CIC | Counter Intelligence Corps |
| CINC | Commander in Chief |
| Cir | Circular |
| CMP | Controlled Materials Plan |
| CO | Commanding Officer |
| CofS | Chief of Staff |
| Com | Committee |
| Comd | Command |
| Comdr | Commander |
| Conf | Conference |
| Cong | Congress |
| Cond | Control |
| Corresp | Correspondence |
| cos British | Chiefs of Staff |
| CPRB | Combined Production and Resources Board |
| DAD | Defense Aid Division |
| DCofS | Deputy Chief of Staff |
| Dept | Department |
| Dir | Director, directive |
| Div | Division |
| Doc | Document, documentary |
| DRB | Departmental Records Branch, The Adjutant General's Office |
| Env | Envelope |
| EO | Executive Order |
| Equip | Equipment |
| ETO | European Theater of Operations |
| EUREKA | International conference at Tehran, 28-30 November 1943 |
| FEA | Foreign Economic Administration |
| G-1 | Personnel Section of divisional or higher headquarters |
| G-2 | Military Intelligence Section |
| G-3 | Operations Section |
| G-4 | Supply Section |
| GAO | General Accounting Office |
| GO | General Orders |
| GOGO | Government-owned, government-operated |
| GOPO | Government-owned, privately operated |
| GS | General Staff |
| HB | Historical Branch |
| Hist | Historical |
| Hosp | Hospital |
| Hq | Headquarters |
| H&R | Holding and reconsignment |
| H.R. | House of Representatives, U.S. Congress |
| HUSKY | Allied invasion of Sicily in July 1943 |
| ICC | Interstate Commerce Commission |
| Ind | Endorsement |
| Info | Information |
| Interv | Interview |
| Intn | International |
| JAC | Joint Administrative Committee |
| JAG | Judge Advocate General |
| JB | Joint Board (Army and Navy) |
| JCS | Joint Chiefs of Staff |
| JLC | Joint Logistics Committee |
| JLPC | Joint Logistics Plans Committee |
| JPC | Joint Planning Committee |
| JPS | Joint Staff Planners |
| LL | Lend-Lease |
| MAB | Munitions Assignments Board |
| MAC(G) | Munitions Assignments Committee (Ground) |
| Maint | Maintenance |
| Man | Manual |
| MANHATTAN DISTRICT | Atomic bomb project |
| MBW | Munitions Assignments Board, Washington |
| MDW | Military District of Washington |
| Med | Medical |
| Min | Minutes |
| MP | Military Police |
| MPD | Military Personnel Division |
| MS | Manuscript |
| Mtg | Meeting |
| NAM | National Association of Manufacturers |
| NDAC | Advisory Commission to the Council of National Defense |
| NDRC | National Defense Research Committee |
| NYPE | New York Port of Embarkation |
| OCD | Office of Civilian Defense |
| OCMH | Office of the Chief of Military History |
| OCofS | Office of the Chief of Staff |
| OCT | Office of the Chief of Transportation |
| OCTAGON | International conference at Quebec, 12-16 September 1944 |
| ODCofS | Office of the Deputy Chief of Staff |
| ODT | Office of Defense Transportation |
| Off | Officer |
| OLLA | Office of Lend-Lease Administration |
| OPA | Office of Price Administration |
| OPD | Operations Division, War Department General Staff |
| OPM | Office of Production Management |
| Opn | Operation |
| OQMG | Office of The Quartermaster General |
| Org | Organization, organizational |
| OSRD | Office of Scientific Research and Development |
| OUSW | Office of the Under Secretary of War |
| OVERLORD | Plan for the invasion of northwest Europe in the spring of 1944 |
| OWMR | Office of War Mobilization and Reconversion |
| Pam | Pamphlet |
| Pers | Personnel |
| PRP | Production Requirements Plan |
| Pub | Publication |
| PW | Prisoner of War |
| QUADRANT | International conference at Quebec, 14-24 August 1943 |
| Rad | Radio, radiogram |
| RAINBOW | Name for various prewar plans of military action to meet situations created by Axis aggression |
| Rec | Record |
| Reorg | Reorganization |
| Rep | Repair |
| Ret | Retired |
| RFC | Reconstruction Finance Corporation |
| ROTC | Reserve Officers' Training Corps |
| Rpt | Report |
| SAS | Supply Arms and Services |
| Sec | Section |
| Sess | Session |
| SEXTANT | International conference at Cairo, 22-26 November and 3-7 December 1943 |
| SG | Surgeon General |
| Shipmt | Shipment |
| SigC | Signal Corps |
| SN | Secretary of the Navy |
| SO | Special Orders |
| SOS | Services of Supply |
| SPAB | Supply Priorities and Allocation Board |
| Spec | Special |
| Sta | Station |
| Stat | Statistics, statistical |
| Sup | Supply |
| Sv | Service |
| SW | Secretary of War |
| SWPA | Southwest Pacific Area |
| TAG | The Adjutant General |
| Tech | Technical |
| Tel | Telephone |
| TERMINAL | International conference near Potsdam, 16-26 July 1945 |
| TM | Technical Manual |
| Tag | Training |
| T of Opns | Theater of Operations |
| TORCH | Allied invasion of North and Northwest Africa, November 1942 |
| Trans | Transportation |
| Trf | Transfer |
| TRIDENT | International conference at Washington, 12-25 May 1943 |
| USAFICPA | United States Army Forces in the Central Pacific Area |
| USASOS | United States Army Services of Supply |
| USN | Under Secretary of the Navy |
| USSR | Union of Soviet Socialist Republics |
| USW | Under Secretary of War |
| Vice | CNO Vice Chief of Naval Operations |
| WAC | Women's Army Corps |
| Wash | Washington |
| WD | War Department |
| WDGS | War Department General Staff |
| WMC | War Manpower Commission |
| WPA | Works Progress Administration |
| WPB | War Production Board |
| WPD | War Plans Division, War Department General Staff |
| WSA | War Shipping Administration |