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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

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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

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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

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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