| AA |
Antiaircraft |
| AAF |
Army Air Forces |
| ACofAS |
Assistant Chief of Air Staff |
| ACofOrd |
Assistant Chief of Ordnance |
| ACofS |
Assistant Chief of Staff |
| Actg |
Acting |
| Admin |
Administrative |
| AEF |
American Expeditionary Forces (1917–18) |
| AF |
Air Force |
| AFV |
Armored Fighting Vehicle |
| AG |
Adjutant General |
| AGCT |
Army General Classification Test |
| AGD |
Adjutant General’s Department |
| AGF |
Army Ground Forces |
| AGO |
Adjutant General’s Office |
| AGWAR |
Adjutant General, War Department |
| Ammo |
Ammunition |
| A&N |
Army and Navy |
| ANMB |
Army and Navy Munitions Board |
| Ann |
Annual |
| APC |
Armor-piercing-capped |
| APG |
Aberdeen Proving Ground |
| AR |
Army Regulations |
| Arty |
Artillery |
| ASF |
Army Service Forces |
| ASW |
Assistant Secretary of War |
| AT |
Antitank |
| Atchd |
Attached |
| ATSC |
Air Technical Service Command |
| Auto |
Automotive |
| BAR |
Browning automatic rifle |
| Bd |
Board |
| Br |
Branch |
| BRL |
Ballistic Research Laboratory |
| BT |
Base detonating |
| Bull |
Bulletin |
| CA |
Coast Artillery |
| CBI |
China-Burma-India |
| CC |
Clearance Committee |
| CDL |
Canal defense light |
| CG |
Commanding general |
| CIOS |
Combined Intelligence Objectives Subcommittee |
| Cir |
Circular |
| Civ |
Civilian |
| CO |
Commanding officer |
| CofAC |
Chief of Air Corps |
| CofAS |
Chief of Air Staff |
| CofCA |
Chief of Coast Artillery |
| CofCav |
Chief of Cavalry |
| CofEngrs |
Chief of Engineers |
| CofFA |
Chief of Field Artillery |
| CofInf |
Chief of Infantry |
| CofOrd |
Chief of Ordnance |
| CofS |
Chief of Staff |
| Conf |
Conference |
| CPD |
Civilian Personnel Division |
| DA |
Defense aid |
| DCofS |
Deputy Chief of Staff |
| Dev |
Development |
| Dir |
Director |
| Dist |
District |
| Div |
Division |
| Doc |
Document |
| DRB AGO |
Departmental Records Branch, Adjutant General’s Office |
| EDNA |
Ethylenedinitramine |
| Eng |
England |
| Engr |
Engineer (s) (ing) |
| ETO |
European Theater of Operations. |
| ETOUSA |
European Theater of Operations, US Army |
| EUCOM |
European Command |
| Exec |
Executive |
| FA |
Field Artillery |
| FDAP |
Field Director of Ammunition Plants |
| Fisc |
Fiscal |
| FM |
Field manual |
| FNH |
Flashless non-hygroscopic powder |
| FS |
Field Service |
| FY |
Fiscal year |
| G-2 |
Intelligence Division of the War Department General Staff |
| G-3 |
Operations and Training Division of the War Department General Staff |
| G-4 |
Supply Division of the War Department General Staff |
| GHQ |
General Headquarters |
| GMDS |
German Military Documents Section |
| GO |
General Order |
| GOCO |
Government-owned, contractor-operated |
| Gp |
Group |
| GP |
General purpose |
| GPF |
Grande Puissance Filloux |
| GS |
General Staff |
| HE |
High explosive |
| HEAT |
High-explosive, antitank (ammunition) |
| Hist |
History |
| HP |
Horsepower |
| Hq |
Headquarters |
| HR |
House of Representatives |
| HVAP |
High-velocity, armor-piercing |
| HVAR |
High-velocity aircraft rocket |
| ICAF |
Industrial College of the Armed Forces |
| IG |
Inspector General |
| Incl |
Inclosure |
| Ind |
Industrial, endorsement |
| Inf |
Infantry |
| Intel |
Intelligence |
| Interv |
Interview |
| IPF |
Initial Protective Force |
| JAC |
Joint Aircraft Committee |
| JIT |
Job Instructor Training |
| JMT |
Job Methods Training |
| JRT |
Job Relations Training |
| LL |
Lend-lease |
| Ltr |
Letter |
| Maint |
Maintenance |
| MAT |
Mechanical Aptitude Test |
| MG |
Machine gun |
| MID |
Military Intelligence Division |
| Mil |
Military |
| Min |
Minutes |
| MNAM |
Military North African Mission |
| MPTS |
Military Plans and Training Service |
| Mtg |
Meeting |
| MTP |
Military Training Program |
| MTS |
Motor Transport Service |
| NA |
National Archives |
| NADA |
National Automobile Dealers Association |
| NATOUSA |
North African Theater of Operations, US Army |
| NCO |
Noncommissioned officer |
| NDRC |
National Defense Research Committee |
| NE |
National Emergency |
| OASW |
Office of the Assistant Secretary of War |
| OC |
Ordnance Committee |
| OCD |
Office of Civilian Defense |
| OCM |
Ordnance Committee Minutes |
| OCMH |
Office of the Chief of Military History |
| OCO |
Office, Chief of Ordnance |
| OCO–D |
Office, Chief of Ordnance—Detroit |
| OCT |
Office, Chief of Transportation |
| OD |
Ordnance Department |
| ODEP |
Ordnance Developmental and Experimental Projects |
| ODFS |
Ordnance Department Field Service |
| ODO |
Ordnance Department Order |
| Off |
Officer |
| OHF |
Ordnance Historical File |
| OKH |
Oberkommando des Heeres (High Command of the Army) |
| OMPUS |
Official Munitions Production of the United States |
| OO |
Ordnance Office |
| OPD |
Operations Division |
| Opns |
Operations |
| Ord |
Ordnance |
| Orgn |
Organization |
| ORTC |
Ordnance Replacement Training Center |
| OSW |
Office of the Secretary of War |
| OTC |
Ordnance Training Center |
| OUSW |
Office of the Under Secretary of War |
| Pers |
Personnel, personal |
| PETN |
Pentaerythritol tetranite |
| PL |
Public Law |
| PMP |
Protective Mobilization Plan |
| POA |
Pacific Ocean Area |
| POW |
Prisoner of war |
| PSP |
Project Supporting Paper |
| PT |
Point detonating |
| Pub |
Public |
| PWA |
Public Works Administration |
| QMC |
Quartermaster Corps |
| RAF |
Royal Air Force |
| R&D |
Research and Development |
| RDX |
Research development explosive cyclonite |
| Regt |
Regiment |
| Res |
Resolution |
| Ret |
Retired |
| Rpt |
Report |
| Rqmts |
Requirements |
| RTC |
Replacement Training Center |
| S |
Senate |
| SA |
Small arms |
| SAE |
Society of Automotive Engineers |
| SAIC |
Special Allied Interrogation Commission |
| SAP |
Semi-armor-piercing |
| SC |
Service command |
| Sec |
Section |
| Secy |
Secretary |
| Serv |
Service |
| SHAEF |
Supreme Headquarters, Allied Expeditionary Force |
| SNL |
Standard Nomenclature List |
| SO |
Special Order |
| SOS |
Services of Supply |
| Stat |
Statistics, statistical |
| STM |
Strength of the Army Reports |
| Supp |
Supplement |
| Supt |
Superintendent |
| SW |
Secretary of War |
| T-AC |
Tank-Automotive Center |
| TAG |
The Adjutant General |
| Tech |
Technical |
| TIG |
The Inspector General |
| TM |
Training manual |
| Tng |
Training |
| TNT |
Trinitrotoluene |
| TQMG |
The Quartermaster General |
| TWI |
Training Within Industry |
| U.K. |
United Kingdom |
| USAF |
United States Air Force |
| USAFCBI |
United States Army Forces in China-Burma-India |
| USAFIME |
United States Army Forces in the Middle East |
| USSAFE |
US Strategic Air Forces, Europe |