| AA (Ack Ack) |
Anti-aircraft |
| AAG |
Assistant Adjutant General |
| AA & QMG |
Assistant Adjutant and Quartermaster General |
| ACGS |
Assistant Chief of the General Staff |
| ADAG |
Assistant Deputy Adjutant General |
| ADQMG (AE) |
Assistant Deputy Quartermaster General (Army Equipment) |
| Adv |
Advance(d) |
| AFV |
Armoured fighting vehicle |
| AG |
Adjutant General |
| A & Q |
Administrative Branches of the Staff |
| AHQ |
Army Headquarters |
| ALC |
Assault Landing Craft |
| AOC |
Air Officer Commanding |
| AOC-in-C |
Air Officer Commanding-in-Chief |
| AQMG |
Assistant Quartermaster General |
| Armd |
Armoured |
| AVM |
Air Vice Marshal |
| Bde |
Brigade |
| BEF |
British Expeditionary Force |
| BGS |
Brigadier, General Staff |
| Bn |
Battalion |
| Brig |
Brigadier |
| Bty |
Battery |
| CA (A) |
Canadian Army (Active) |
| CAC |
Canadian Armoured Corps |
| Canmilitry |
CMHQ [Address used in telegrams] |
| CAO |
Canadian Army Overseas |
| CAOF |
Canadian Army Occupation Force |
| CAORO |
Canadian Army (Overseas) Routine Order |
| CAPF |
Canadian Army Pacific Force |
| Capt |
Captain |
| CARO |
Canadian Army Routine Order [issued in Canada] |
| CASF |
Canadian Active Service Force |
| CB |
Companion of the Order of the Bath |
| CBE |
Commander of the Order of the British Empire |
| CBRD |
Canadian Base Reinforcement Depot |
| CCO |
Chief of Combined Operations |
| CCS |
Combined Chiefs of Staff |
| CD |
Canadian Forces Decoration |
| Cdn |
Canadian |
| CEF |
Canadian Expeditionary Force (1914-19) |
| CFC |
Canadian Forestry Corps |
| CGS |
Chief of the General Staff |
| CIC |
Canadian Infantry Corps |
| CIGS |
Chief of the Imperial General Staff |
| C-in-C |
Commander-in-Chief |
| Cmdr (Cdr) |
Commander (Naval) |
| CMF |
Central Mediterranean Force |
| CMG |
Companion of the Order of St. Michael and St. George |
| CMGTC |
Canadian Machine Gun Training Centre |
| CMHQ |
Canadian Military Headquarters, London |
| CMSC |
Corps of Military Staff Clerks |
| CO |
Commanding Officer |
| COHQ |
Combined Operations Headquarters |
| Col |
Colonel |
| Comd |
Commander |
| CO S |
Chiefs of Staff |
| C of S |
Chief of Staff |
| COTC |
Canadian Officers Training Corps |
| Coy |
Company |
| Cpl |
Corporal |
| CRS |
Captured Records Section (US Dept of the Army) |
| CRU |
Canadian Reinforcement Units |
| CSC |
Chiefs of Staff Committee |
| CSM |
Company Sergeant-Major (Warrant Officer, Class II) |
| CWAC |
Canadian Women's Army Corps |
| DAG |
Deputy Adjutant General |
| DA & QMG |
Deputy Adjutant and Quartermaster General |
| DCGS |
Deputy Chief of the General Staff |
| DCM |
Distinguished Conduct _Medal |
| DDEM |
Director(ate) of Design, Equipment and Mechanization |
| DDMO (0) |
Deputy Director of Military Operations (Overseas) [War Office] |
| Defensor |
NDHQ (Address used in telegrams] |
| DGC & AA |
Director General Coast and Anti-Aircraft Defences |
| DGMS |
Director General of Medical Services |
| DHS |
Director Historical Section |
| Div |
Division |
| DJAG |
Deputy Judge Advocate General |
| DM |
Deputy Minister |
| DM & A |
Director(ate) of Mechanization and Artillery |
| DMO |
Director(ate) of Military Operations |
| DMO & I |
Director(ate) of Military Operations and Intelligence |
| DMO & P |
Director(ate) of Military Operations and Planning |
| DMT |
Director(ate) of Military Training |
| DMT & SD |
Director(ate) of Military Training and Staff Duties |
| DND |
Department of National Defence |
| DOC |
District Officer Commanding |
| D of T & M |
Director(ate) of Transport and Movements |
| Dominion |
High Commissioner for Canada in the United Kingdom [Address used in telegrams] |
| D Org |
Director(ate) of Organization |
| D Pers Serv |
Director(ate) of Personal Services |
| DQMG |
Deputy Quartermaster General |
| DQS |
Director(ate) of QMG Services |
| DSD |
Director(ate) of Staff Duties |
| DSO |
Companion of the Distinguished Service Order |
| DST |
Director(ate) of Supplies and Transport |
| DTR |
Director(ate) of Technical Research |
| DVA |
Department of Veterans Affairs |
| ED |
Canadian Efficiency Decoration |
| External |
Cdn Dept of External Affairs [Address used in telegrams] |
| Fervour |
GOC Hong Kong [Address used in telegrams] |
| FOO |
Forward Observation Officer |
| GCMG |
Knight Grand Cross of the Order of St Michael and St George Gen General |
| GHQ |
General Headquarters |
| GO |
General Order |
| GOC |
General Officer Commanding |
| GOC-in-C |
General Officer Commanding-in-Chief |
| G (Ops) |
General Staff (Operations) |
| GS |
General Staff |
| GSO 1 |
General Staff Officer, Grade 1 |
| H/Capt |
Honorary Captain (Canadian Chaplain Service) |
| HD |
Home Defence |
| HKVDC |
Hong Kong Volunteer Defence Corps |
| HMCS |
His Majesty's Canadian Ship |
| HMS |
His Majesty's Ship (Royal Navy) |
| Hon |
Honourable |
| HQ |
Headquarters |
| Inf |
Infantry |
| Int |
Intelligence |
| JAG |
Judge Advocate General |
| JWEC |
Junior War Establishments Committee |
| LCA |
Landing Craft, Assault |
| LCF(L) |
Landing Craft, Flak (Large) |
| LCM |
Landing Craft, Mechanized |
| L/Cpl |
Lance-Corporal |
| LCP(L) |
Landing Craft, Personnel (Large) |
| LCT |
Landing Craft, Tank |
| Lieut (Lt) |
Lieutenant |
| LMG |
Light machine-gun |
| L of C |
Lines of Communication |
| L/Sgt |
Lance-Sergeant |
| Maj |
Major |
| MBE |
Member of the Order of the British Empire |
| MC |
Military Cross |
| MD |
Military District |
| MG |
Machine-gun |
| MGA |
Major General in charge of Administration |
| MGO |
Master General of the Ordnance |
| MILO |
Military Intelligence Liaison Officer |
| Mit |
Mitrailleuses |
| MM |
Military Medal |
| MND |
Minister of National Defence |
| MS |
Military Secretary |
| MTB |
Motor Torpedo Boat |
| NCO |
Non-commissioned officer |
| NDHQ |
National Defence Headquarters |
| NPAM |
Non-Permanent Active Militia |
| NRMA |
National Resources Mobilization Act |
| NSHQ |
Naval Service Headquarters |
| OBE |
Officer of the Order of the British Empire |
| OC |
Officer Commanding |
| OCTU |
Officer Cadet Training Unit |
| OIC |
Officer in charge |
| OKH |
Oberkommando des Heeres (Army High Command, Berlin) |
| OK W |
Oberkommando der Wehrmacht (Armed Forces High Command) |
| OMFC |
Overseas Military Forces of Canada (1914-19) |
| Ops |
Operations |
| OSAC |
Officer Selection and Appraisal Centre |
| OTC |
Officers' Training Centre |
| PCMR |
Pacific Coast Militia Rangers |
| PF |
Permanent Force |
| PJBD |
Permanent Joint Board on Defence |
| PPCLI |
Princess Patricia's Canadian Light Infantry |
| PSM |
Platoon Sergeant-Major (Warrant Officer, Class III) |
| Pte |
Private |
| PW |
Prisoner of War |
| QMG |
Quartermaster General |
| QMS |
Quartermaster-Sergeant (Warrant Officer, Class II) |
| RA |
Royal Regiment of Artillery |
| RAAF |
Royal Australian Air Force |
| RAF |
Royal Air Force |
| RCA |
Royal Canadian Artillery |
| RCAF |
Royal Canadian Air Force |
| RCAMC |
Royal Canadian Army Medical Corps |
| RCA& C |
Royal Canadian Army Service Corps |
| RCE |
Corps of Royal Canadian Engineers |
| RCEME |
Corps of Royal Canadian Electrical and Mechanical Engineers |
| RCHA |
Royal Canadian Horse Artillery |
| RCMP |
Royal Canadian Mounted Police |
| RCN |
Royal Canadian Navy |
| RCNVR |
Royal Canadian Naval Volunteer Reserve |
| RCOC |
Royal Canadian Ordnance Corps |
| RCR |
The Royal Canadian Regiment |
| RC Sigs |
Royal Canadian Corps of Signals |
| RDF |
Radio Direction Finding (now called Radar) |
| RE |
Corps of Royal Engineers |
| Regt |
Regiment |
| RHLI |
Royal Hamilton Light Infantry |
| RM |
Royal Marines |
| RMC |
Royal Military College |
| RN |
Royal Navy |
| RNVR |
Royal Naval Volunteer Reserve |
| RO |
Routine Order |
| RRC |
Royal Rifles of Canada |
| R Regt C |
Royal Regiment of Canada |
| SCAP |
Supreme Commander for the Allied Powers |
| SD and T |
Staff Duties and Training |
| SD (W) |
Staff Duties (Weapons) |
| Sec |
Secretary |
| Sgt |
Sergeant |
| SO |
Senior Officer (CMHQ) |
| SOME |
Senior Ordnance Mechanical Engineer |
| Spr |
Sapper |
| Sqn |
Squadron |
| SS |
Schutzstaffel (Protective Unit) (Nazi party organizations, including military formations) |
| Stats |
Statistics |
| TC |
Training Centre |
| Tk |
Tank |
| TOET |
Test of Elementary Training |
| Tpr |
Trooper |
| Troopers |
War Office [Address used in telegrams] |
| UK |
United Kingdom |
| US |
United States |
| USA |
United States Army |
| USN |
United States Navy |
| VC |
Victoria Cross |
| VCCO |
Vice Chief of Combined Operations |
| VCGS |
Vice Chief of the General Staff |
| VCIGS |
Vice Chief of the Imperial General Staff |
| VD |
Colonial Auxiliary Forces Officers' Decoration |
| W/C |
Wing Commander |
| WD |
War Diary |
| WO III |
Warrant Officer, Class III |