Abbreviations Used in Military Documents and for Medal Inscriptions - Abbreviations: C
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C |
|
| C | Canadian, Censor, Commissioned, Company, Cook |
| C & TC | Commissariat and Transport Corps |
| C CENSOR | Cable Censor |
| C CTR | Chief Controller |
| C DFDR MJR | Queen Mary's Own Baluchistan Light Infantry |
| C DVR | Crane Driver |
| C HAVR | Company Havildar |
| C HVLDR | Colour Havildar |
| C HVLDR MJR | Company Havildar Major |
| C MISTRI | Camp Mistri |
| C MTD R, CMR, CAPE MR | Cape Mounted Rifles |
| C of E | Church of England |
| C OF GUIDES | Corps of Guides |
| C OF GUIDES INF | Corps of Guides Infantry |
| C OF H | Corporal of Horse |
| C OF LOND YEO | City of London Yeomanry |
| C OF MIL ACC | Corps of Military Accountants |
| C OF MILY ST CLERKS | Corps of Military Staff Clerks |
| C OF MP | Corps of Military Police |
| C of S | Church of Scotland |
| C SJT, CR SGT, CSGT | Colour Sergeant |
| C SMITH, COPPER SM | Copper Smith |
| C VOLS | City Volunteers |
| C&A | Corrections & Amendments |
| C&AAA | Coast & Anti-Aircraft Artillery |
| C&AAATC | Coast & Anti-Aircraft Artillery Training Centre |
| C&P | Counselling and Probation |
| C&YR | Carleton & York Regiment |
| C(A)D(I)HU | Canadian (Armoured) Division (Infantry) Holding Unit |
| C(A)TBOWRCOC | Canadian (Army) Tank Brigade Ordnance Workshop, Royal Canadian Ordnance Corps |
| C(O)on"Q"L | Canadian (Officers) on "Q" List |
| C(W/T)V | Calibration (Wireless Telegraphy) Vessel |
| C,CACS | Construction, Company Atlantic Command Signals |
| C/Blkmth | Chief Blacksmith |
| C/BTC | Canadian Base Training Centre |
| C/EA, CEA | Chief Electrical Artificer |
| C/ERA(M) | Chief Engine Room Artificer (Mechanic) |
| C/ERA, CERA | Chief Engine Room Artificer |
| C/Joiner | Chief Joiner |
| C/Mech | Chief Mechanic |
| C/MM | Chief Motor Mechanic |
| C/O | Commanding Officer |
| C/Plbr | Chief Plumber |
| C/Pntr | Chief Painter |
| C/PO(Postal) | Chief Petty Officer (Postal) |
| C/POCdr | Chief Petty Officer Coder |
| C/POCk | Chief Petty Officer Cook |
| C/POPhoto | Chief Petty Officer Photographer |
| C/POPtlmn | Chief Petty Officer Patrolman |
| C/POStwd | Chief Petty Officer Steward |
| C/POTel | Chief Petty Officer Telegraphist |
| C/POWtr, CPO WR | Chief Petty Officer Writer |
| C/RA | Chief Radio Artificer |
| C/Shpt, CHSHPT, CH SHPT, CH SPT | Chief Shipwright |
| C/SPO | Chief Stoker Petty Officer |
| C/Sto | Chief Stoker |
| C/Sto(FF) | Chief Stoker (Fire Fighter) |
| C1 | Chief Petty Officer 1st Class |
| C1Div | Clearance Diver |
| C2 | Chief Petty Officer 2nd Class |
| CA | Canadian Army, Control Armourer |
| CA & AA, CA(AA) | Coastal Artillery and Anti-Aircraft |
| CA MUS | Corps of Army Music |
| CA"Y"F | Canadian Army British West Indies Force |
| CA(A) | Canadian Army (Active) |
| CA(A)TC | Canadian Army (Advanced) Training Centre |
| CA(B)TC | Canadian Army (Basic) Training Centre |
| CA(M) | Canadian Army (Militia) |
| CA(NRMA) | Canadian Army (National Resources Mobilization Act of 1940) |
| CA(PF) | Canadian Army (Permanent Force) |
| CA(R) | Canadian Army (Regular) |
| CA(Res) | Canadian Army (Reserve) |
| CA(RF) | Canadian Army (Reserve Force) |
| CA(RR) | Canadian Army (Regular Reserve) |
| CA(SF) | Canadian Army (Special Force) |
| CA/SA | Chief Anti-Submarine Artificer |
| CA/SEE | Captain, Anti-Submarine Experimental Establishment |
| CA/TKRPRCASC | Canadian Anti-Tank Regiment Platoon, Royal Canadian Army Service Corps |
| CA2PS | Canadian Army 2 Pounder School |
| CAAC | Crown Assets Allocation Committee |
| CAAF, CA(AF) | Canadian Army (Active Force) |
| CAAORRCA | Canadian Anti-Aircraft Operations Room, Royal Canadian Artillery |
| CAAS | Canadian Army Administration School |
| CAB | Canadian Armoured Brigade, Canadian Army Band |
| CABC | Canadian Armoured Corps Band |
| CABCRCASC | Canadian Armoured Brigade Company, Royal Canadian Army Service Corps |
| CABOC | Canadian Armoured Brigade Ordnance Company |
| CABRR | Canadian Artillery Base Reinforcement Regiment |
| CABS | Canadian Armoured Brigade Signals |
| CABTCA&TS | Canadian Army Basic Training Centre Administrative and Training Staff |
| CABW/SRCEME | Canadian Advance Base (or Armoured Brigade) Workshop, Royal Canadian Electrical and Mechanical Engineers |
| CAC | Canadian Armoured Corps |
| CAC(A)TC(CA) | Canadian Armoured Corps (Advanced) Training Centre (Canadian Army) |
| CACBTC | Canadian Armoured Corps Basic Training Centre |
| CACCRCASC | Canadian Army Car Company, Royal Canadian Army Service Corps |
| CACF | Commander Captain-in-Command, Araken Coastal Forcer |
| CACHU | Canadian Armoured Corps Holding Unit |
| CACOFP | Canadian Armoured Corps Ordnance Field Park |
| CACPRCASC | Canadian Army Catering Pool, Royal Canadian Army Service Corps |
| CACRU | Canadian Armoured Corps Reinforcement Unit |
| CACSCAC | Canadian Air Control Section, Canadian Armoured Corps |
| CACSqn | Coast Artillery Co-operation Squadron, (Royal Canadian Air Force) |
| CACTC | Canadian Armoured Corps Training Centre |
| CACTC(A) | Canadian Armoured Corps Training Centre (Active) |
| CACTCR | Canadian Armoured Corps Training Centre Reserve |
| CACTE | Canadian Armoured Corps Training Establishment |
| CACTR | Canadian Armoured Corps Training Regiment |
| CACTS | Canadian Armoured Corps Training Squadron |
| CACTSR | Canadian Armoured Corps Trained Soldiers Regiment |
| CACTU | Canadian Armoured Corps Training Unit |
| CAD | Central Ammunition Depot |
| CADC | Canadian Army Dental Corps |
| Cadets | Cadet Services (Directorate of Military Training) |
| CADIS | Canadian Armoured Division Intelligence Section |
| CADMS | Canadian Advance Depot Medical Stores |
| CADOFPRCOC | Canadian Armoured Division Ordnance Field Park, Royal Canadian Ordnance Corps |
| CADPAT | Canadian Disruptive Pattern |
| CADPUCPC | Canadian Armoured Division Postal Unit, Canadian Postal Corps |
| CADR(ER)CAC | Canadian Armoured Delivery Regiment (Elgin Regiment), Canadian Armoured Corps |
| CADRCASC | Canadian Armoured Division, Royal Canadian Army Service Corps |
| CADRSSRCCS | Canadian Armoured Delivery Regiment Signal Section, Royal Canadian Corps of Signals |
| CADRTC | Canadian Armoured Division Reinforcement Transit Camp |
| CADSCDC | Canadian Army Dental Stores, Canadian Dental Corps |
| CADSGCRCASC | Canadian Armoured Divisional Support Group, Royal Canadian Army Service Corps |
| CADSP | Canadian Armoured Division Sub Park |
| CADTCRCASC | Canadian Armoured Division Transport Company, Royal Canadian Army Service Corps |
| CADTS | Canadian Armoured Division Training School |
| CADU | Canadian Army Demonstration Unit |
| CADW/SRCOC | Canadian Armoured Division Workshop, Royal Canadian Ordnance Corps |
| CAEBTC | Canadian Army Engineer Basic Training Centre |
| CAEC(B&NY) | Canadian Army Enlistment Centre (Boston and New York) |
| CAESU | Canadian Army Equipment Selection Unit |
| CAF | Citizen Air Force, Canadian Air Force, Chief of Air Force |
| CAFHSRCAMC | Canadian Army Field Hygiene Section, Royal Canadian Army Medical Corps |
| CAFO | Confidential Admiralty Fleet Order |
| CAFRSSRCS | Canadian Army Field Regiment Signal Section, Royal Canadian Signals |
| CAFSS | Canadian Army Field Security Section |
| CAFVS | Canadian Armoured Fighting Vehicles School |
| CAFVTC | Canadian Armoured Fighting Vehicles Training Centre |
| CAG | Canadian Artillery Group |
| CAGRE | Commander, Army Group Royal Engineers |
| CAGS | Canadian Army Gymnastic Staff |
| CAHC | Canadian Army Hydrological Corps |
| CAHQDC(RMR) | Canadian Army headquarters Defence Company (Royal Montreal Regiment) |
| CAHTC | Cape Auxiliary Horse Transport Corps |
| CAHU | Canadian Artillery Holding Unit |
| CAIB | Canadian Army Identification Bureau |
| CAIPCIC | Canadian Army Interrogation Pool, Canadian Infantry Corps |
| CAIS | Canadian Army Intelligence Section |
| CALA MNL | Cala Mounted Native Levies |
| CALCUTTA VOL A | Calcutta Volunteer Artillery |
| CALCUTTA VOL BY | Calcutta Volunteer Battery |
| CALCUTTA VOL RIF | Calcutta Volunteer Rifles |
| CALE | Canadian Army Liaison Establishment |
| CalgH | Calgary Highlanders |
| CalgR | Calgary Regiment |
| CALO | Command Amenities Liaison Officer |
| CALS | Canadian Air Liaison Section |
| CAM | Catapult Aircraft Merchant Vessel, Camouflaged, Chief Air Marshall |
| CAM HLDRS, CAM | Queen's Own Cameron Highlanders |
| CAMB | Central Air Medical Board |
| CambR, Camb | Cambridgeshire Regiment |
| CAMBU | Canadian Army Mobile Bath Unit |
| CAMC, CAN AMC | Canadian Army Medical Corps |
| CAMCTC | Canadian Army Medical Corps Training Centre |
| CA-MCURCAMC | Canadian Anti-Malaria Control nit, Royal Canadian Army Medical Corps |
| CAMEL CORPS EA | Camel Corps Egyptian Army |
| CAMERONIANS | Cameronians |
| CAMERON'S, CAM'N HIGHRS, CAMN HIGHS | Cameron Highlanders |
| CAMMS | Canadian Army Motor Mechanic School |
| CAMP SUPDT | Camp Superintendent |
| CAMS | Catapult Aircraft Merchant Ships |
| CAMSI | Confidential Admiralty Merchant Shipping Instructions |
| Can | Canadian |
| CAN ASC | Canadian Army Service Corps |
| Can Cav Bde | Canadian Calvary Brigade |
| CAN CAVALRY | Canadian Cavalry |
| CAN CYCLIST B, CAN CYCLIST BN, CAN CYC BN, CAB, CTC, BN | Canadian Cyclist Battalion |
| CAN D CYC, CAN D(IV) CYC | Canadian Division(al) Cyclists |
| CAN DIV AC | Canadian Divisional Ammunition Column |
| CAN DIV ART | Canadian Divisional Artillery |
| CAN HY B, CAN HY BY | Canadian Heavy Battery |
| CAN INF | Canadian Infantry |
| CAN INF WKS C | Canadian Infantry Works Company |
| CAN LABOUR BN, CAN LABR BN, CanLabrBn | Canadian Labour Battalion |
| CAN M RIF, CAN MTD RIF | Canadian Mounted Rifles |
| CAN SIB EXP FCE, CAN SIBERIAN EXP FCE | Canadian Siberian Expeditionary Force |
| CAN STA HOSP | Canadian Stationary Hospital |
| Canavhed | Canadian Naval Headquarters |
| Cand W | Cable and Wireless Company |
| CanDCyc, CanDivCyc | Canadian Divisional Cyclists |
| CanDivCav | Canadian Divisional Calvary |
| CanDivHQ | Canadian Divisional Headquarters |
| CanDivSig | Canadian Divisional Signals |
| CanEng | Canadian Engineers |
| CanFdArt | Canadian Field Artillery |
| CanForC | Canadian Forestry Corps |
| CanForGen | Canadian Forces General Order |
| CanFus | Canadian Fusiliers |
| CanHighComm | Canadian High Commissioner |
| CanInfBde | Canadian Infantry Brigade |
| CanInfWksC, CAN INF WKS CORPS, CIWC | Canadian Infantry Works Corps |
| CanLH | Canadian Light Horse |
| CANMIL, CANMILITRY | Canadian Military Headquarters |
| CanordC, CAN ORD C | Canadian Ordnance Corps |
| CanPnrBn, CAN PNR BN | Canadian Pioneer Battalion |
| CanPostalC, CAN POSTAL C | Canadian Postal Corps |
| CanRemtD, CAN REMT D | Canadian Remount Depot |
| CanRlyConsC, CAN RLY CONS C | Canadian Railway Construction Corps |
| CanSanSec, CAN SAN SEC | Canadian Sanitary Section |
| CanScts, CAN SCTS, CANADIAN SCTS | Canadian Scouts |
| CanSiberianExpFce | Canadian Siberian Expeditionary Force |
| CanTankC, CAN TANK CORPS, CAN TANK C | Canadian Tank Corps |
| CAO | Command Account Officer, Canadian Army Order, Canadian Army Overseas |
| CAO (s) | Canadian Army Orders |
| CAOC | Canadian Army Ordnance Corps |
| CAOF | Canadian Army Occupation Force |
| CAOFP | Canadian Army Ordnance Field Park |
| CAOPS | Canadian Air Observation Post Squadron |
| CAORG | Canadian Army Operational Research Group |
| CAORO(s) | Canadian Army Overseas Routine Order(s) |
| CAP | Captain, Combat Air Patrol, Canadian Army Projectionist, Corps Ammunition Park, Common Army Phase |
| CAP | Common Army Phase |
| CAPC | Canadian Army Pay Corps |
| CAPCRCAC | Canadian Armoured Personnel Carrier Regiment, Canadian Armoured Corps |
| CAPCRSTRCS | Canadian Armoured Personnel Carrier Regiment Signal Troop, Royal Canadian Signals |
| CAPE CLR | Cape Coloured Labour Regiment |
| CAPE CORPS | Cape Corps |
| CAPE GA | Cape Garrison Artillery |
| CAPE GR | Cape Government Railways |
| CAPE INF | Cape Infantry |
| CAPE RLY SHPTRS | Cape Railway Sharpshooters |
| CAPETOWN DRA | Capetown Defence Rifle Association |
| CAPF | Canadian Army Pacific Force |
| CapINF | Capitaine Infirmiere |
| CAPIS | Canadian Air Photo Interpretation Section, Canadian Intelligence Corps |
| CAPO | Canadian Army Post Office |
| CAPPUCIC | Canadian Army Photo Processing Unit, Canadian Intelligence Corps |
| CAPRCASC | Corps Ammunition Park Royal Canadian Army Service Corps |
| CAPS | Canadian Army Pay Services, Captain Auxiliary Patrol Scapa |
| Capt | Captain, Captive |
| Capt(D) | Captain (Destroyers) |
| CAPTI/C | Captain-in-Charge |
| CAPTMLC | Captain, Major Landing Craft |
| CAPU | Canadian Army Postal Unit |
| CAR | Canadian Airborne Regiment, Carpenter, Canadian Armoured Regiment, Canadian Army Representative |
| CAR CR | Carpenter's Crew |
| CAR MATE | Carpenter's Mate |
| CAR(CR) | Canadian Armoured Regiment (Calgary Regiment) |
| CARABINIERS | 6th Dragoon Guards |
| CARADSFR | Canadian Armoured Regiment Advance Details Sherbrooke Fusiliers Regiment |
| CARBRCA | Canadian Army Radar Battery Royal Canadian Artillery |
| CARC | Canadian Army Recovery Company |
| CARCRCOC | Canadian Army Recovery Company, Royal Canadian Ordnance Corp |
| CARD | Canadian Artillery Reinforcement Depot |
| CARDE | Canadian Armament Research Development Establishment |
| CareerTrg | Career Training |
| CARICOM | Caribbean Community and Common Market [Force] |
| CARNAVN CDO | Carnarvon Commando |
| CARNBH | Canadian Armoured Regiment New Brunswick Hussars |
| CARO(s) | Canadian Army Routine Order(s) |
| CAROLINA KDO | Carolina Kommando |
| CARP, CARPR | Carpenter |
| CARR(GGHG) | Canadian Armoured Recce Regiment (Governor General's Horse Guards) |
| CARS | Canadian Association of Returned Soldiers |
| CARTC | Canadian Army Rehabilitation Training Centre |
| CartDmn | Cartographic Draughtsman |
| Cartymn | Chief Artilleryman |
| CARU, CARFTU | Canadian Artillery Reinforcement Unit |
| CAS | Casualty, Canadian Administration School, Canadian Army Shows, Canadian Army Staff, Canadian Army Staff, Canadian Artillery School, Chief of the Air Staff, Corps of Army Schoolmasters |
| CASAC | Chief of the Air Staff Advisory Committee |
| CASC | Canadian Army Service Corps, Canadian Air Support Control |
| CASC MT | Canadian Army Service Corps Motor (or Military, Mechanized) Transport |
| CASCIC | Censorship Advisory Section, Canadian Intelligence Corps |
| CASCRCE | Canadian Air Survey Company Royal Canadian Engineers |
| CASCRU | Canadian Army Service Corps Reinforcement Unit |
| CASDRCASC | Canadian Advance Stationary Depot, Royal Canadian Army Service Corps |
| CASEU | Canadian Auxiliary Service Entertainment Unit |
| CASF | Canadian Active Service Force |
| CASHIER | Cashier |
| CASof I | Coast Artillery (or Army) School of Instruction |
| CASS | Canadian Auxiliary Services Section |
| CASSU | Canadian Air Support Signal Unit |
| CASSURCCS | Canadian Air Support Signal Unit, Royal Canadian Corps of Signals |
| CAT | Catering |
| CATB | Canadian Army Tank Brigade |
| CATBCRCASC | Canadian Army Tank Brigade Company, Royal Canadian Army Service Corps |
| CATBHSC | Canadian Army Tank Brigade Heavy Support Company |
| CATBn | Canadian Army Tank Battalion |
| CATBS | Canadian Army Tank Brigade Signals |
| CATBSPRCOC | Canadian Army Tank Brigade Sub Park, Royal Canadian Ordnance Corps |
| CATC | Canadian Army Training Centre |
| CATCAC | Canadian Army Troop, Canadian Armoured Corps |
| CATCCRCASC | Canadian Assault Troops Composite Company, Royal Canadian Army Service Corps |
| CATCRCASC | Canadian Administrative Transport Company, Royal Canadian Army Service Corps |
| CATF | China Air Task Force |
| CATM | Canadian Army Training Memorandum |
| CATOFP | Canadian Army Tank Ordnance Field Park |
| CATR | Canadian Army Tank Regiment |
| CATS | Canadian Army Tank School, Canadian Army Training School, Combined Aerial Target Service |
| CATTLE RANG | Cattle Rangers |
| CATTLEMAN | Cattleman |
| CATW/SRCOC | Canadian Armoured Troops Workshop, Royal Canadian Ordnance Corps |
| CAU | Canadian Administration Unit, Civil Affairs Unit |
| CAUC | Canadian Army University Course |
| Cav | Cavalry |
| CAVALRY & MIEA | Cavalry & Mounted Infantry Egyptian Army |
| CAVALRY FF | Cavalry Frontier Force |
| CAVC | Canadian Army Veterinary Corps |
| CAW | Canadian Army Staff, Washington |
| CAWC | Canadian Artizan Works Company, Royal Canadian Engineers |
| CB | Companion of the Order of the Bath, Coast Brigade, Confinement to Barracks, Counter Battery, Counter-bombardment, Confidential Books |
| CBA | Canadian Broadcasting Corporation Broadcasting Station |
| CBBDB | Camp Borden Branch Detention Barracks |
| CBC | Canadian Broadcasting Corporation |
| CBD | Canadian Base Details, Canadian Base Details |
| CBDC | Canadian Base Dental Company |
| CBDCMSC | Camp Borden Detachment, Corps of Military Staff Clerks |
| CBDMSRCAMC | Canadian Base Depot Medical Stores, Royal Canadian Army Medical Corps |
| CBDRCOC | Camp Borden Details, Royal Canadian Ordnance Corps |
| CBDSCDC | Canadian Base Dental Stores, Canadian Dental Corps |
| CBE | Commander of the Order of the British Empire |
| CBG | Canadian Brigade Group |
| CBH(RB) | Cape Breton Highlander (Rifle Battalion) |
| CBHQS | Camp Borden Headquarters Staff |
| CBMHRCAMC | Camp Borden (or Currie Barrcks, Coteau Barracks) Military Hospital, Royal Canadian Army Medical Corps |
| CBOD | Canadian Base Ordnance Depot |
| CBOI(ACSRRCA) | Canadian Base Ordnance Increment (Attached Canadian Survey Regiment, Royal Canadian Artillery) |
| CBOSRCA | Counter Battery Officers Staff, Royal Canadian Artillery |
| CBOSRCACC | Counter Battery Officers Staff, Royal Canadian Artillery, Canadian Corps |
| CBOStaff | Counter Battery Officers Staff |
| CBOW/SRCOC | Canadian Base Ordnance Workshop, Royal Canadian Ordnance Corps |
| CBP | Canadian Base Park |
| CBPRCE | Canadian Base Park, Royal Canadian Engineers |
| CBRCA | Centaur (or Coast) Battery, Royal Canadian Artillery |
| CBRD | Canadian Base Reinforcement Depot |
| CBRG | Canadian Base Reinforcement Group |
| CBRGSofCRCACS | Canadian Base Reinforcement Group School of Cookery, Royal Canadian Army Service Corps |
| CBSC | Canadian Base Staging Camp |
| CBSO | Counter Battery Staff Officer |
| CBSRCASC | Canadian Barracks Services, Royal Canadian Army Service Corps |
| CBSS(CMF) | Canadian Base Signal Section (Central Mediterranean Force) |
| CBSSRCCS | Camp Borden Signal Section, Royal Canadian Corps of Signals |
| CBTC | Canadian Base Transport Company |
| CBTD | Canadian Base Transit Depot |
| CBTPRCASC | Canadian Base Transport Platoon, Royal Canadian Army Service Corps |
| CBU | (Headquarters) Canadian Base Unit |
| CBUCCRCE | Canadian Base Units Construction Company, Royal Canadian Engineers |
| CC | Camouflage Course |
| CC | Canadian Corps, Companion of the Order of Canada, Cancellations & Corrections, Chief Constructor, Civil Convictions, Clerk's Course, Conditioning Centre, Cape Corps, Confined to Camp, Cadet Corps, Camouflage Course, Camp Commandant, Camp Commander |
| CC ORD DEPT | Cape Colony Ordnance Department |
| CC&A-AAS | Canadian Coast & Anti-Aircraft Artillery School |
| CC&ATSPRCOC | Canadian Corps & Army Troops Sub Park, Royal Canadian Ordnance Corps |
| CCAC | Canadian Casualty Assembly Centre |
| CCAS | Canadian Coast Artillery School |
| CCB | Canadian Calvary Brigade, Canadian Cyclist Battalion, Combined Communications Board |
| CCBMGS | Canadian Cavalry Brigade Machine Gun Squadron |
| CCBPNo | Combined Communications Board, Publication Number |
| CCCC | Canadian Corps Composite Company, Canadian Concentration Camp, Casualty Clearing Centre, Canadian Construction Company, Cape Colony Cyclist Corps |
| CCCCRCASC | Canadian Corps Car Company, Royal Canadian Army Service Corps |
| CCCI | Command, Control, Communications & Intelligence |
| CCCRCE | Canadian Construction Company, Royal Canadian Engineers |
| CCCS | Captain (later Commodore) Commanding Canadian Ships and Establishments in the United Kingdom, Canadian Casualty Clearing Station |
| CCCTRCASC | Canadian Command Corps Troops, Royal Canadian Army Service Corps |
| CCCU | Canadian Cemetery Construction Unit |
| CCD | Canadian Convalescent (or Corps) Depot, Canadian Command Depot, Commander of Coast Defences |
| CCDC | Canadian Corps Defence Company |
| CCDRCAMC | Canadian Convalescent Depot, Royal Canadian Army Medical Corps |
| CCDSSTRCCS | Canadian Corps Delivery Squadron Signal Troop, Royal Canadian Corps of Signals |
| CCDU | Coastal Command Development Unit |
| CCERCE | Canadian Constructional Engineers, Royal Canadian Engineers |
| CCF | Commander Coastal Forces |
| CCFC | Company Canadian Forestry Corps |
| CCFCORCAPC | Canadian Corps Field Cash Office, Royal Canadian Army Pay Corps |
| CCFPC | Canadian Corps Field Park Company, Canadian Corps Field Punishment Camp |
| CCHA | Canadian Corps Heavy Artillery |
| CCIS | Canadian Corps Intelligence Section |
| CCM | Counter Countermeasure, Canadian Centennial Medal, Combined Cypher Machine |
| CCM&HC | Canadian Courts Martial & Holding Centre |
| CCMA | Canadian Corps Medium Artillery |
| CCMHQSRCS | Company Canadian Military Headquarters Signals, Royal Canadian Signals |
| CCMOS | Canadian Counter Mortar Officers Staff |
| CCMOSRCA | Canadian Counter Mortar Officer Staff, Royal Canadian Artillery |
| CCMSRCA | Canadian Corps Meteorological Section, Royal Canadian Artillery |
| CCNF | Commodore Commanding Newfoundland Force |
| CCO | Civilian Contracts Officer, Chief of Combined Operations, Communications, Coding and Cyphering Arrangements |
| CCOD | Canadian Central Ordnance Depot |
| CCOS | Combines Chiefs of Staff |
| CCP | Casualty Clearing Post (or Point) |
| CCPC | Company Canadian Provost Corps |
| CCPPRCASC | Canadian Corps Petrol Park, Royal Canadian Army Service Corps |
| CCPS | Computerized Central Pay System |
| CCPU | Canadian Corps Protective Company, Canadian Corps Postal Unit |
| CCR(C)A | Commander Corps Royal (Canadian) Artillery |
| CCRA | Commander, Corps Royal Artillery |
| CCRC | Canadian Corps Reinforcement Camp |
| CCRCAMC | Conditioning Centre, Royal Canadian Army Medical Corps, Composite Company, Royal Canadian Army Service Corps |
| CCRTC | Canadian Corps Reinforcement Transit Camp |
| CCRU | Canadian Combined Reinforcement Unit |
| CCS | Canadian Censor Section |
| CCS | Canadian Chaplain Services, Casualty Clearing Station, Canadian Censor Section, Code and Cypher School, Combined Chiefs of Staff, Cape Command Signals |
| CCSCR | Cape Command Staff Corps Regiment |
| CCSO | Contraband Control Service Officer |
| CCSRCCS | Canadian Cipher Section, Royal Canadian Corps of Signals |
| CCSRCS | Canadian Corps Signals, Royal Canadian Signals |
| CCT | Canadian Calibration Troop |
| CCTC | Canadian Corps Transport Company, Commdant, Combined Training Centre |
| CCTCC | Canadian Corps Troops Carrying Column |
| CCTCCRCASC | Commander Corps Troops Carrying Column, Royal Canadian Army Service Corps |
| CCTORCOC | Canadian Corps Troops Ordnance, Royal Canadian Ordnance Corps |
| CCTSI | Canadian Corps Troops Service Increment |
| CCTW/SRCEME | Canadian Corps Troops Workshop, Royal Canadian Electrical and Mechanical Engineers |
| CCTW/SRCOC | Canadian Corps Troops Workshop, Royal Canadian Ordnance Corps |
| CCU | Canadian Concentration Unit |
| CCWAC | Company Canadian Women's Military Corps |
| CCWACMD | Company Canadian Women's Army Corps Military Corps |
| CCWDL | Canadian Chemical Warfare Defence Laboratory |
| CCWS | Canadian Chemical Warfare School |
| CCZ | Canadian Coastal Zone |
| CD | Civil Defence, Commissioned, Command, Canada Draftr, Canadian Forces Decoration, Captain of the Dockyard, Convalescent Detachments, Clearance Diver, Coast Defence, Clearing Depot |
| CD CK | Commissioned Cook |
| CD TELEGR | Cadet Telegraphist |
| CD&AA | Coast Defence & Anti-Aircraft |
| CD&AAATC | Coast Defence & Anti-Aircraft Artillery Training Centre |
| CD&AAW/SS | Coast Defence & Anti-Aircraft Workshop Section |
| CD&EP | Canadian Defence & Employment Platoon |
| CD&FPB | Canadian Detention and Field Punishment Barracks |
| CD&MS | Canadian Driving and Maintenance School |
| CD(Records) | Correction on Documents |
| CDA | Canadian Divisional Artillery |
| CDAC | Canadian Divisional Ammunition Column |
| CDB | Canadian Detention Barracks, Coast Defence Battery |
| CDBPRCE | Canadian Divisional Bridging Platoon, Royal Canadian Engineers |
| CDC | Canadian Dental Corps, Canadian Divisional Cavalry, Canadian Disciplinary Centre |
| CdCkO | Commissioned Cookery Officer |
| CDCRCE | Canadian Drilling Company, Royal Canadian Engineers |
| CdCtO | Commissioned Catering Officer |
| CDD | Canadian Discharge Depot |
| CDE | Code |
| CdeG | Croix de Guerre |
| CdeG(B) | Croix de Guerre Belgium |
| CdeG(F) | Croix de Guerre France |
| CdEl | Commissioned Electrician |
| CdEng | Commissioned Engineer |
| CDF, CDF(S) | Canadian Defence Force, Chief of the Defence Force (Staff) |
| CdG'nr | Commissioner Gunner |
| CDH | Combined Defence Headquarters |
| CDHQ | Canadian Divisional Headquarters |
| CDIS | Canadian Division Intelligence Section |
| CDISRCASC | Canadian Detail Issue Depot, Royal Canadian Army Service Corps |
| CDLS | Canadian Defence Liaison Staff |
| CDMD | Canada Draft Military District |
| Cdn | Canadian |
| CdnConstlEngrs | Canadian Constructional Engineers |
| CdnDetnBks | Canadian Detention Barracks |
| CdnEngrs | Canadian Engineers |
| Cdn-Gds | Canadian Guards |
| CDO | Commando |
| CDOF | Colonie d'Afrique Occidentale Française |
| CDofDS | Canadian Depot of Dental Stores |
| CDOSC | Camp Daily Orders Sarcee Camp |
| CDOW/SRCOC | Canadian Divisional Ordnance Workshop, Royal Canadian Ordnance Corps |
| CDPU | Canadian Division Postal Unit |
| Cdr | Commander, Conductor, Coder |
| Cdr(D) | Commander (Destroyers) |
| CDRAS&TD | Canadian Detachment Royal Armoured Corps School & Training Depot |
| CDRBCAO/S | Canadian Division Reece Battalion, Canadian Army Overseas |
| CDRE | Commodore |
| CDRJ | Commander, Force J |
| CDRSRCS | Canadian Despatch Rider Section Royal Canadian Signals |
| CDS | Corps Dressing Station, Canadian Divisional Signals, Chief of the Defence Staff |
| CDSB | Canadian Division Support Battalion, Commissioned Signal Boatswain |
| CDSCCRC | Canadian Division Section - Canadian Corps Reinforcement Camp |
| CDSCDC | Central Dental Stores, Canadian Dental Corps |
| CDSCRCASC | Canadian Division Supply Company, Royal Canadian Army Service Corps |
| CdShpt | Commissioned Shipwright |
| CDSIC | Cadet School Infantry Company |
| CdSO | Commissioned Stores Officer |
| CDSRC | Canadian Division Section Reinforcement Camp |
| Cdt | Cadet, Commissioned Telegraphist |
| CDTCRCASC | Canadian Division Troops Company, Royal Canadian Army Service Corps |
| CDTS | Canadian Divisional Training School |
| CDVGofCCMHQ | General Duty Veterans Guard of Canada, Canadian Military Headquarters |
| CdWO | Commissioned Writer Officer |
| CE | Canadian Engineers, Chief Engineer, Civil Engineer |
| CE | Chief Engineer |
| CE&MPRCE | Canadian Electrical & Mechanical Platoon, Royal Canadian Engineers |
| CE&MSRCE | Canadian Electrical & Mechanical Section, Royal Canadian Engineers |
| CE(Wks) | Chief Engineer (Works) |
| CEAURCOC | Canadian Equipment Assembly Unit, Royal Canadian Ordnance Corps |
| CEEW(A)RCEME | Canadian Engineer Equipment Workshop (Active), Royal Canadian Electrical and Mechanical Engineers |
| CEEW/SRCEME | Canadian Engineer Equipment Workshop, Royal Canadian Electrical and Mechanical Engineers |
| CEEW/SRCOC | Canadian Engine Equipment Workshop, Royal Canadian Ordnance Corps |
| CEF | Canadian Expeditionary Force |
| CEG(B) | Canadian Employment Group "B" |
| CEHU | Canadian Engineer Holding Unit |
| CELE | Communication//Electronic Engineer |
| CEO | Camp (or Command) Engineer Officer, Chief Equipment Officer |
| CEP | Canadian Employment Platoon |
| CEPF | Canadian Echelon Pacific Force |
| CER | Combat Engineer Regiment, Canadian Engineer Regiment |
| CERB | Canadian Engineers Railway Battalion |
| CERD | Canadian Engineer Reinforcement Depot |
| CERU | Canadian Engineer Reinforcement Unit |
| CESU | Canadian Educational Services Unit |
| CET | Combat Engineer Tractor |
| CETC | Canadian Engineer Training Centre |
| CETD | Canadian Engineer Training Depot |
| CETech | Construction Engineering Technician |
| CEURCAMC | Canadian Exhaustion Unit, Royal Canadian Army Medical Corps |
| CEYLON GA | Ceylon Garrison Artillery |
| CEYLON PL R C, CEYLON PLR RC, CeylonPLRC | Ceylon Planters Rifle Corps |
| CEYLON SAN CO | Ceylon Sanitary Company |
| CF | Canadian Forces, Canadian Fusiliers, Composite Flights, Chaplain to the Forces |
| CF&PS | Canadian Film and Photo Section |
| CF(SP)RRCA | Canadian Field (Self Propelled) Regiment, Royal Canadian Artillery |
| CFA | Canadian Field Ambulance, Canadian Field Artillery, Cape Field Artillery |
| CFAO | Canadian Forces Administrative Order |
| CFASS | Canadian Field Auxiliary Services Section |
| CFB | Canadian Forces Base |
| CFBMEK | Coast Force Base, Mers-El-Kebir |
| CFBRCA(AF) | Canadian Field Battery, Royal Canadian Artillery, (Active Force) |
| CFC | Canadian Forces College, Craftsman |
| CFC | Canadian Forestry Corps |
| CFCCDRCE | Canadian Field Company, Canadian Division, Royal Canadian Engineers |
| CFCRCE | Canadian Field Company, Royal Canadian Engineers |
| CFCSC | Canadian Forces Command and Staff Course |
| CFCTW | Canadian Forestry Corps Training Wing |
| CFD | Canadian Forces Detachment |
| CFDS | Canadian Field Dressing Station |
| CFDSRCAMC | Canadian Field Dressing Station, Royal Canadian Army Medical Corps |
| CFE | Commander, Coastal Forces, Eastern Mediterranean, Cape Fortress Engineers |
| CFEF | Canadian Far East Force |
| CFES | Canadian Field Educational Section |
| CFF | Corps of Civilian (Canadian) Fire Fighters For Service in the United Kingdom, Communication and Ferry Flights |
| CFFS | Canadian Forces Fleet School |
| CFFT | Coastal Forces Fuelling Tender |
| CFH | Canadian Field (or Forces) Hospital |
| CFHA | Canadian Forces Housing Agency |
| CFHS | Canadian Field Historical Section |
| CFHSvcsGp | Canadian Forces Health Services Group |
| CFI | Chief Flying Instructor |
| CFL | Compassionate Farm Leave |
| CFMG | Canadian Forces Medical Group |
| CFMSO | Coastal Forces Material Supply Officer |
| CFMTP | Canadian Forces Musician Training Plan |
| CFN | Canadian Forces in the Netherlands, Craftsman |
| CFNIS | Canadian Forces National Investigation Service |
| CFOCS | Canadian Forces Officer Candidate School |
| CFORS | Course for Orderly Room Sergeants |
| CFP | Canadian Forces Publication |
| CFPAS | Canadian Forces Personnel Appraisal System |
| CFPC | Canadian Field Punishment Camp |
| CFPCRCE | Corps Field Park Company, Royal Canadian Engineers |
| CFPCUCIC | Canadian Field Press Censor Unit, Canadian Intelligence Corps |
| CFPO | Canadian Forces Post Office |
| CFPSA | Canadian Forces Personnel Support Agency |
| CFR | Commissioning From the Ranks |
| CFRC | Canadian Forces Recruiting Centre |
| CFRETS | Canadian Forces Recruiting, Education and Training System |
| CFRP | Commissioning from the Ranks Plan |
| CFRRCAAP | Canadian Field Regiment, Royal Canadian Artillery, Advance Party |
| CFS | Canadian Field Squadron, Central Flying School, Canadian Forces Station |
| CFSC | Canadian Field Survey Company |
| CFSCRCE | Canadian Field Survey Company, Royal Canadian Engineers |
| CFSD | Canadian Forces Supply Depot |
| CFSEME | Canadian Forces School of Electrical and Mechanical Engineering |
| CFSRD | Canadian Field Security Reserve Detachment |
| CFSS | Canadian Field Security Section |
| CFSURCAMC | Canadian Field Surgical Unit, Royal Canadian Army Medical Corps |
| CFTC(ID)RCASC | Canadian General Transport Company (Infantry Division), Royal Canadian Army Service Corps |
| CFTO | Canadian Forces Technical Order |
| CFTSHQ | Canadian Forces Training System Headquarters |
| CFTU | Canadian Field Transfusion Unit |
| CFW | Commander, Coastal Forces, Western Mediterranean |
| CG | Canada Gazette, Compassionate Grounds |
| CGA | Canadian Garrison Artillery, Cape Garrison Artillery |
| CGAHAB | Cape Garrison Artillery Heavy Artillery Brigade |
| CGB | Canadian Garrison Battalion |
| CGBD | Canadian General Base Depot |
| CGBRB | Canadian General Base Reinforcement Battalion |
| CGCU | Canadian Graves Concentration Unit |
| Cgds, C GDS, CG, CGDS | Coldstream Guards |
| CGG | Canadian Grenadier Guards |
| CGH | Canadian General Hospital |
| CGHRCAMC | Canadian General Hospital, Royal Canadian Army Medical Corps |
| CGHU | Canadian General Holding Unit |
| CGI | Chief Ground Instructor, Chief Gunnery Instructor |
| CGLS | Canadian General Labour Section |
| CGM | Conspicuous Gallantry Medal |
| CGMU | Combat Group Medical Unit |
| CGPC | Canadian General Pioneer Company |
| CGR | Canadian Garrison Regiment, Canadian Graves Registrar (or Registration) |
| CGRM | Commander General Royal Marines |
| CGRU | Canadian General Reinforcement Unit |
| CGRU | Canadian Graves Registration Unit |
| CGS | Chief of the General Staff, Canadian Government Ship |
| CGSF | Commander Gulf Sea Frontier |
| CGTC | Canadian General Transport Company |
| CGTWRCEME | Canadian General Troop Workshop, Royal Canadian Electrical and Mechanical Engineers |
| CH | 14th Canadian Hussars, Companion of Honour, Convalescent Hospital, Construction Hand, Chaplain, Chatham Division, Royal Marines, Canadian Horse |
| CH | Calgary Highlanders |
| CH ARM | Chief Armourer |
| CH ART ENG | Chief Artificer Engineer |
| CH BOSN, CH BSN | Chief Bosun |
| CH CAPT | Chaplain Captain |
| CH CK | Chief Cook |
| CH GEN | Chaplain General |
| CH GNR | Chief Gunner |
| CH SB, CHSB | Chief Signal Boatswain |
| CH SH CK | Chief Ships Cook |
| CH SIG | Chief Signalman |
| CH STO | Chief Stoker |
| CH YS, CH YEO SIG, CYS | Chief Yeoman of Signals |
| CHA | Commander Heavy Artillery |
| CHAP | Chaplain, Canadian Harassment and Abuse Prevention |
| Chap(F) | Chaplain of the Fleet |
| Chap(P) | Chaplain (Protestant) |
| Chap(RC) | Director of Chaplain Services (Roman Catholic) |
| CHB | Canadian Highland Battalion (Black Watch Royal Highland Regiment of Canada) |
| CHD | Calgary Highlanders Depot |
| CHDAVC | Convalescent Horse Depot Army Veterinary Corps |
| CHDRI | Chaudri |
| CHENG, CH ENG | Chief Engineer |
| CHES R, ChesR, CHES | Cheshire Regiment |
| ChesYeo, CHES YEO | Cheshire Yeomanry |
| CHET | Canadian Higher Education Test |
| CHINESE LABOUR CORPS, CLC | Chinese Labour Corps |
| CHKLR | Chuckler |
| CHLRNTR | Chlorinator |
| CHMN | Chinaman (Labourer) |
| ChO, CH OFFR | Chief Officer |
| CHofO(MG) | Cameron Highlanders of Ottawa (Machine Gun) |
| CHOP | Line near 47th Meridian dividing the British and Canadian areas of responsibility |
| CHP | Chaplain (Protestant) |
| CHQ | Company Headquarters |
| CHQ&NDHQCRCAMC | Corps Headquarters & National Defence Headquarters Company, Royal Canadian Army Medical Corps |
| CHQAGRCE | Canadian Headquarters Army Group, Royal Canadian Artillery |
| CHQCDC | Corps Headquarters, Canadian Dental Corps, Canadian Disciplinary Centre |
| CHQCPC(C) | Corps Headquarters Canadian Postal Corps (Canada) |
| CHQCWAC | Corps Headquarters Canadian Women's Army Corps |
| CHQEOFSCRCOC | Corps Headquarters Element of Salvage Control, Royal Canadian Ordnance Corps |
| CHQofBSA | Canadian Headquarters of Base Sub Area |
| CHQPMC | Camp Headquarters, Petawawa Military Camp |
| CHQRCECA | Corps Headquarters Royal Canadian Engineers, Canadian Army |
| CHQRCEME | Corps Headquarters Royal Canadian Electrical and Mechanical Engineers |
| CHQRCOC | Corps Headquarters, Royal Canadian Ordnance Corps |
| CHQSDRCOC | Canadian Headquarters Salvage Depot, Royal Canadian Ordnance Corps |
| CHRA | Canadian Human Rights Act |
| CHRC | Canadian Human Rights Commission, Chaplain Roman Catholic |
| CHRSRCEME | Canadian Heavy Recovery Section, Royal Canadian Electrical and Mechanical Engineers |
| CHRSRCOC | Canadian Heavy Recovery Section, Royal Canadian Ordnance Corps |
| CHS | Canadian Hospital Ship |
| ChSkr, CH SKR | Chief Skipper |
| CHT | Corps of Horse Transport |
| CHU | Canadian Holding Unit |
| CHWKDR | Chowkidar |
| CHWR, CH WR | Chief Writer |
| CHYeoSIG | Chief Yeoman of Signals |
| CI | Chief Instructor, Central India |
| CI HORSE, CIH | Central Indian Horse |
| CI(I)HQS | Canadian Intelligence (Interrogation) Headquarters Section |
| CIA | Chief Inspector of Armaments |
| CIAL | Commercial Cable Company |
| CIB | "C" Infantry Battalion |
| CIB | Canadian Infantry Brigade |
| CIBC | Canadian Infantry Corps Band |
| CIBCRCASC | Canadian Infantry Brigade Company, Royal Canadian Army Service Corps |
| CIBD | Canadian Infantry Brigade Depot |
| CIBGDP(LS) | Canadian Light Infantry Brigade Ground Defence Platoon (Lorne Scot |
| CIBRB | Canadian Infantry Base Reinforcement Battalion |
| CIBSG(SLI) | Canadian Infantry Brigade Support Group (Saskatoon Light Infantry) |
| CIBUS | Communication Instructions for British Warships in the USA |
| CIBW/S | Canadian Infantry Brigade Workshop (Royal Canadian Ordnance Corps or Royal Canadian Electrical and Mechanical Engineers) |
| CIBW/SRCEME | Canadian Infantry Brigade Workshop, Royal Canadian Electrical and Mechanical Engineers |
| CIBW/SRCOC | Canadian Infantry Brigade Workshop, Royal Canadian Ordnance Corps |
| CIC | Canadian Infantry Corps, Canadian Intelligence Corps, Cadet Instructor Corps |
| CID | Combat Identification |
| CID | Committee of Imperial Defence |
| CIDB, CIDBn | Canadian Infantry Depot Battalion |
| CIDCC(M)RCASC | Canadian Infantry Division Composite Company (Main), Royal Canadian Army Service Corps |
| CIDCMOS, CIDOFPRCOC | Canadian Infantry Division Ordnance Field Park, Royal Canadian Ordnance Corps |
| CIDM/GBn(SLI) | Canadian Infantry Division Machine Gun Battalion (Saskatoon Light Infantry) |
| CIDRTC | Canadian Infantry Division Reinforcement Transit Camp |
| CIDSI | Canadian Infantry Division Service Increment |
| CIDSPRCOC | Canadian Infantry Division Sub Park, Royal Canadian Ordnance Corps |
| CIDTCRCASC | Canadian Infantry Division Troops Company, Royal Canadian Army Service Corps |
| CIDTS | Canadian Infantry Division Training School |
| CIET | Canadian Intermediate Education Test |
| CIGS | Chief of the Imperial General Staff |
| CIHU | Canadian Infantry Holding Unit |
| CIL | Cadet Instructors List |
| CIMGCoy(NBR) | Canadian Independent Machine Gun Company (New Brunswick Regiment) |
| CIMIC | Civil Military Cooperation |
| Cin CCNA | Commander in Chief, Canadian North West Atlantic |
| CinC | Commander in Chief |
| CinC AandWI | Commander in Chief, Atlantic and West Indies Station |
| C-IN-C BDYGD | Commander In Chief's Bodyguard |
| CinCCWA | Commander in Charge Canadian North Atlantic |
| CinCEF | Commander in Chief Eastern Fleet |
| CINCEN | Commander in Chief Central European Theatre |
| CinCHF | Commander in Chief Home Fleet |
| CINCLANT | Commander in Chief, US Atlantic Fleet |
| CINCUKAIR | Commander in Chief UK Air |
| CInfC | Canadian Infantry Corps |
| CIntC | Canadian Intelligence Corps |
| CIofCM | Chief Inspector of Catering & Messing |
| CIOSPRCOC | Canadian Infantry Ordnance Sub-Park, Royal Canadian Ordnance Corps |
| CIPCIC | Canadian Interpreters Pool, Canadian Infantry Corps |
| CIRU | Canadian Infantry Reinforcement Unit |
| CITB | Canadian Infantry Training Brigade |
| CITC | Canadian Infantry Training Centre |
| CItoanMTIBRCASC | Canadian Increment to a Mobilization Training Centre (or Mechanical Transport, Military Training, Movement Train) Inspection Branch, Royal Canadian Army Service Corps |
| CITR | Canadian Infantry Training Regiment |
| CITW/SRCEME | Canadian Infantry Troops Workshop, Royal Canadian Electrical and Mechanical Engineers |
| CITW/SRCOC | Canadian Infantry Troops Workshop, Royal Canadian Ordnance Corps |
| CIU | Communications Intelligence Unit, Combat Intelligence Unit, Clinical Investigation Unit |
| CIV | Civilian |
| CIV HOS RES, CIV HOSP RES | Civil Hospital Reserve |
| CIV(MI) | City Imperial Volunteers (Mounted Infantry) |
| CIV, Civ | City Imperial Volunteers |
| CIV-SAR | Civilian-Sarwah |
| CIWB | Canadian Infantry Works Battalion |
| CJATC | Canadian Joint Air Training Centre (Rivers, Manitoba) |
| CJLS | Corps Junior Leaders School |
| CJO | Chief of Joint Operations |
| CJRDFO | Chief of the Joint Rapid Deployment Force Operations |
| CJWSC | Canadian Junior War Staff Course |
| CK | Cook |
| Ck(O) | Cook (Officers) |
| Ck(Prob) | Cook (Probationer) |
| Ck(S) | Cook (Seamen) |
| CKMTE, CK MTE | Cook's Mate |
| CKS&DU | Canadian Kit Storage & Disposal Unit |
| CKSD | Canadian Kit Storage Depot |
| CL | Casualty List, CanLoan List, Compassionate (or Convalescent) Leave, Clasp, Colonel |
| CL MOCHI | 1st Class Mochi |
| CLA-AB | Canadian Light Anti-Aircraft Battalion |
| CLANWILLIAM CG | Clanwilliam Convoy Guard |
| CLANWLLM CDO | Clanwilliam Commando |
| CLAREMONT DRA | Claremont Defence Rifle Association |
| CLARKE'S LH | Clarke's Light Horse |
| CLASS | Classified |
| CLB | Church Lads' Brigade, Canadian Labour Battalion |
| CLC | Canadian Leave Centre, Chinese Labour Corps |
| CLDAFHQ | Canadian Liaison Detachment, Allied Forces OR Air Force Headquarters |
| CLE, CLERK | Clerk |
| CLES | Canadian Legion Educational Service |
| CLFCSC | Canadian Land Force Command and Staff College |
| CLFHSRCAMC | Canadian Light Field Hygiene Sections, Royal Canadian Army Medical Corps |
| CLH | Canadian Light Horse |
| CLI | Ceylon Light Infantry |
| CLK | Clerk |
| ClkAcc | Clerk Accounting |
| ClkAdmSupr | Clerk Administrative Supervisor |
| ClkEng | Clerk Engineering |
| ClkGen | Clerk General |
| CLKR | Caulker |
| ClkStats | Clerk Statistics |
| ClkSteno | Clerk Stenographer |
| ClkTyp | Clerk Typist |
| CLLE | Charger Loading Lee Enfield rifle |
| CLLM | Charger Loading Lee Metford rifle |
| Cloc | Chief Locator |
| CLofCPC(C) | Canadian Line of Communication Provost Company (Consolidated) |
| CLofCT | Canadian Line of Communication Terminal |
| CLP | Canadian Labour Pool |
| CLQ | Class Qualified |
| CLRO | Corps (or Canadian) Light Railway Officer |
| CLRSRCOC | Canadian Light Recovery Station, Royal Canadian Ordnance Corps |
| CLS | Chief of Land Staff |
| CL-SE | Color Sergeant |
| CLURCE | Canadian Landmark Unit, Royal Canadian Engineers |
| CLWS | Canadian Legion War Services |
| CLY | County of London Yeomanry |
| CM | Canadian Centennial Medal, Member of the Order of Canada, Commissaryman, Communicator |
| CM STKPR, CHIEF MEDICAL STOREKEEPER | Chief Medical Storekeeper |
| CM/L | Controlled Mine Laying |
| CMA | Central Mediterranean Area |
| CMACRCASC | Canadian Motor Ambulance Convoy, Royal Canadian Army Service Corps |
| CMASCL | Canadian Military Attache Staff Canadian Legation |
| CMB | Coastal Motor Boats |
| CMBG | Canadian Mechanized Brigade Group |
| CMBURCAMC | Canadian Mobile Bath Units, Royal Canadian Army Medical Corps |
| CMC | Canadian Medical Centre, Canadian Military College |
| CMCLG | Canadian Movement Control Liaison Group |
| CMCR(PLNBH)AF | Canadian Motorcycle Regiment (Princess Louise's New Brunswick Hussars) Active Force |
| CMCU | Canadian Movement Control Unit |
| Cmd, Cmdr | Commander |
| CMDBSN | Commissioner Boatswain |
| CMDLondonMD1 | Central Mechanization Depot, Royal Canadian Ordnance Corps |
| CMDT, COMDT | Commandant |
| CME | Chief Mechanical Engineer |
| CMEC | Canadian Mechanical Equipment Company |
| CMF | Central Mediterranean Force, Citizen Military Forces |
| CMFP | Corps of Military Foot Police |
| CMG | Companion of the Order of St Michael and St George, Canadian Medical Group |
| CMG BDE, C MG BDE | Canadian Machine Gun Brigade |
| CMGC | Canadian Machine Gun Corps |
| CMGCMF | Canadian Meteorological Group - Central Mediterranean Force |
| CMGHU | Canadian Machine Gun Holding Unit |
| CMGO | Corps Machine Gun Officer |
| CMGRU | Canadian Machine Gun Reinforcement Unit |
| CMGTC | Canadian Machine Gun Training Centre |
| CMH | Canadian (or Calgary) Military Hospital |
| CMHL | Canadian Mobile Hygiene Laboratory |
| CMHQ | Canadian Military Headquarters |
| CMHQC | Canadian Military Headquarters Course |
| CMHQROX-LPSOW | Canadian Military Headquarters Records Office X-List, PSOW |
| CMHRCAMC | Camp (or Camrose, Charlottetown, Chatham, Chicoutimi, Chilliwack, Cornwall) Military Hospital, Royal Canadian Army Medical Corps |
| CML CPS | Camel Corps |
| CMM | Commander of the Order of Merit, Chief Motor Mechanic |
| CMMG, CMMG BDE, CAN MMG BDE | Canadian Motor Machine Gun Brigade |
| CMMGC | Canadian Motor Machine Gun Corps |
| CMMP | Corps of Military Mounted Police |
| CMMS | Canadian Motorcycle Maintenance School |
| CMN-SURCAMC | Canadian Mobil Neuro-Surgical Unit, Royal Canadian Army Medical Corps |
| CMO | Court Martial Officer |
| CMOS | Counter Mortar Officer Staff |
| CMP | Corps of Military Police |
| CMP&DB | Canadian Military Prison & Detention Barracks |
| CMP, CMPC | Canadian Military Police (Corps) |
| CMPDR | Compounder |
| CMPLRCASC | Canadian Mobile Pet Laboratories, Royal Canadian Army Service Corps |
| CMPS | Canadian Military Police Service, Canadian Map Photographic Section |
| CMR | Canadian Mounted Rifles, Cape Mounted Rifles, Collège Militaire Royal de Saint-Jean |
| CMR(GGHG)AF | Canadian Motorcycle Regiment (Governor General's Horse Guards) Active Force |
| CMRCASF(DYRCH) | Canadian Motorcycle Regiment, Canadian Active Service Force (17th Duke of York's Royal Canadian Hussars) |
| CMRPRCAMC | Canadian Medical Rest Station, Royal Canadian Army Medical Corps |
| CMRPRCASC | Canadian Medium Regiment Platoon, Royal Canadian Army Service Corps |
| CMRS | Canadian Medical Rest Station |
| CMS | Canadian Military Staff |
| CMSA | Co-operations with the British Ministry of War Transport in the United States |
| CMSC | Corps of Military Staff Clerks, Co-operations with the British Ministry of War Transport in Canada, Cape Medical Staff Corps |
| CMSCCO | Corps of Military Staff, Clerks Corps Orders |
| CMSPEC | Canadian Military Section Port Executive Committee |
| CMSTMUSA | Camp Myles Standish, Tauton Massachusetts, USA |
| CMT | Corps of Motor Transport, Army Service Corps |
| CMTCCM | Canadian Militia Training Course, Camp Macauley |
| CMTech | Construction and Maintenance Technician |
| CMTRCA | Canadian Modelling Team, Royal Canadian Artillery |
| CMTRURCEME | Canadian Mobile Tire Repair Unit, Royal Canadian Electrical and Mechanical Engineers |
| CMTS | Central Mechanical Transport Stores |
| CMU | Construction and Maintenance Units |
| CNCoy | Cannon Company |
| Cnd | Canadian |
| CndDetnBks | Canadian Detention Barracks |
| CNDHQ | Commandant National Defence Headquarters |
| CNE | Canadian National Exhibition |
| CNEC | Chief Naval Engineering and Construction |
| CNES | Chief Naval Equipment and Supply |
| CNK | Change Next of Kin |
| CNMO | Canadian Naval Mission Overseas |
| CNO | Canadian Naval Order |
| CNP | Chief Naval Personnel |
| CNPWRCAMC | Canadian Neuro Psychiatric Wing, Royal Canadian Army Medical Corps |
| CNR | Canadian Naval Regulations, Canadian National Railways |
| CNS | Chief of the Naval Staff |
| CNSRHRCAMC | Canadian Nursing Sister's Rest Home, Royal Canadian Army Medical Corps |
| CNVT&TU | Canadian Night Vision Training & Testing Unit |
| CNW-44 | Canadian Naval War Plan |
| CO | Commanding Officer, Corps Orders, Cook (Officer's), Constable, Company, Conscientious Objector |
| CO LOND REGT | County of London Regiment |
| CO LOND REGT 23 BN | 23rd Battalion County of London Regiment |
| CO OF LOND YEO (2,3,etc) | (2nd,3rd,etc.) County of London Yeomanry |
| CO OF LOND YEO 1 | 1st County of London Yeomanry |
| CO&MERU, COMERU | Canadian Ordnance & Mechanical Engineer Reinforcement Unit |
| CO(A) | Camp Orders (Angler) |
| CO/SPD | Canadian Overseas Postal Depot |
| COA | Chief Ordnance Accountant, Corps of Ordance Artificers, Course of Action |
| COAC | Commanding Officer Atlantic Coast |
| COAV | Commanding Officer Auxiliary Vessels |
| COBRA | Counter Battery Radar |
| COC | Canadian Ordnance Corps, Combined Operations Centre, Commander of Command |
| COC&BTC | Combined Operations Centre & Basic Training Centre |
| COC(AC) | Combined Operations School (Army Camp) |
| COCDC | Corps Orders, Canadian Dental Corps |
| COCPC | Corps Orders Canadian Postal Corps |
| COCTC | Canadian Ordnance Corps Training Centre |
| COCTUSC | Canadian Officer Cadet Training Unit Selection Centre |
| COCWAC | Corps Orders, Canadian Women's Army Corps |
| COD | Central Ordnance Depot |
| CODCRCOC | Central Ordnance Depot Company, Royal Canadian Ordnance Corps |
| CODRCOC | Camp Ordnance Depot, Royal Canadian Ordnance Corps |
| COEMETC | Canadian Ordnance Electrical Mechanical Engineer Training Course |
| COF | Canadian Occupational Force |
| CofAS, C of AS | Corps of Army Schoolmasters |
| CofF | Chaplain of the Fleet |
| CofHRS, C of Hrs | Corps of Hussars |
| CofI, COI, C of I | Court of Inquiry |
| CofLondYeo, CO OF LOND YEO | County of London Yeomanry |
| CofLRS, C of Lrs | Corps of Lancers |
| COFPRCOC | Canadian Ordnance Field Park, Royal Canadian Ordnance Corps |
| CofS | Chief of Staff |
| CofW | Cable or Wireless |
| COHQ | Combined Operations Headquarters |
| COIC | Combined Operations and Intelligence Centre |
| COL | Column, Colonel |
| COL COMDT | Colonel Commandant |
| COL GS | Colonel, General Staff |
| COLESBERG CDO | Colesberg Commando |
| COLLINGWOOD BTTN RND | Collingwood Royal Naval Division |
| COLM GDS | Coldstream Guards |
| Coln | Column |
| COLONIAL DF | Colonial Defence Force |
| COLONIAL LH | Colonial Light Horse |
| COLONIAL SCTS | Colonial Scouts |
| COLY | County of London Yeomanry |
| COM | Commissioner |
| COM, COMD | Command |
| ComBtswn | Commissioned Boatswain |
| COMC&S | Canadian Ordnance Maintenance Company & Sections |
| Comd, Com'd | Command, Commander, Commanding, Commandant |
| ComdEngr | Command Engineer |
| COME | Chief Ordnance Mechanical Engineer |
| COMFLOT | Commodore Flotillas |
| COMINCH | Commander in Chief, US Fleet |
| CominchCandR | Commander in Chief, US Fleet, Convoy and Routeing |
| Comm | Commission, Commodore, Commissary |
| Commander (D) | Commander (Destroyers) |
| COMMO | Commodore |
| Commodore(D)WA | Commodore (Destroyers), Western Approaches |
| CommofCustoms | Commissioner of Customs |
| COMMR , COM, COMD | Commander |
| Comn, COMMN | Communication |
| ComOp | Communications Operator |
| ComOpSupr | Communications Operator Supervisor |
| Comp | Composite |
| COMP CC | Composite Cycle Corps |
| COMP RAT, COMPO | Composite Ration |
| ComPC(A) | Communications Performance Checker (Air) |
| ComPC(G) | Communications Performance Checker (Ground) |
| COMRFA | Commander Royal Fleet Auxiliary |
| COMSEN | Communications Centre |
| COMSFOR | Commander SFOR |
| ComTech | Communications Technician |
| ComTech(A) | Communications Technician (Air) |
| ComTech(G) | Communications Technician (Ground) |
| CON DEP | Convalescent Depot |
| Conc | Concentrate, Concentration |
| COND | Commanding Officer Naval Divisions |
| Cond, Condr | Conductor |
| ConnRang | Connaught Rangers |
| Const | Constable |
| Constl | Constructional |
| constr | construction |
| ConstrC | Constructor Captain |
| Conv, Conval | Convalescent |
| Convoy Sig | Convoy Signalman |
| ConvoyCYeoSigs | Convoy Chief Yeoman of Signals |
| ConvoyLSig | Convoy Leading Signalman |
| ConvoyOSig | Convoy Ordinary Signalman |
| ConvoyYeoSigs | Convoy Yeoman of Signals |
| COO | Chief Ordnance Officer |
| Cook(O) | Cook (Officer's) |
| Cook(S) | Cook (Ship's) |
| COOLY | Cooly |
| COOP | Craft of Opportunity |
| COORD | Coordinate |
| COOS(M)RCOC | Canadian Ordnance Officer's Shop (Mobile), Royal Canadian Ordnance Corps |
| COP | Commander of Port |
| COPC | Commanding Officer Pacific Coast |
| COPD | Canadian Overseas Postal Depot |
| COpSO | Chief Operational Services Officer |
| COR | Confirmation of Rank, Corvettes, Company Operations Room, Central Ontario Regiment |
| CORC | Canadian Ordnance Railhead Company |
| CORCAMC | Corps Orders, Royal Canadian Army Medical Corps |
| CORCC | Canadian Overseas Railway Construction Corps |
| CORCRCOC | Canadian Ordnance Railhead Company, Royal Canadian Ordnance Company |
| CORCT | Canadian Overseas Railway Construction Troops |
| CORD | Central Ontario Regimental Depot, Commanding Officer Reserve Divisions |
| Corp, Corpl | Corporal |
| CORU | Canadian Ordnance Reinforcement Unit |
| COS | Companies, Coming Off Strength, Companies, Change of Strength, Company Orderly Sergeant |
| COS&CB | Canadian Officers Survey & Classification Board |
| COS, CS | Chief(s) of Staff |
| COSAI | Canadian Ordnance Stores Accounting Inspectorate |
| COSC | Chiefs of Staff Committee |
| COSSAC | Chief of Staff to the Supreme Allied Commander (Designate) |
| COSSIPORE INFY | Cossipore Infantry |
| COTC | Canadian Officer Training Corps, Canadian Officer Training Centre, Canadian OverseaS Telecommunication Corporation |
| COU | Called Out Under |
| COVGOFC | Corps Orders Veterans Guard of Canada |
| Cox'n | Coxswain |
| Coy | Company |
| COY ABC | Company Army Bearer Corps |
| COY AH CORPS | Company Army Hospital Corps |
| COY CR(S) | Company Commander(s) |
| CP | Command Post, Cape Province, Close Protection, Chaplains Pool |
| CP DIST | Cape Police District |
| CPACRCAMC | Canadian Prophylactic Ablution Centre, Royal Canadian Army Medical Corps |
| CPB | Canadian Parachute Battalion, Canadian Pioneer Battalion |
| CPBRCE | Canadian Pioneer Battalion, Royal Canadian Engineers |
| CPC | Canadian Pension Commission (Department of Veterans Affairs), Canadian Postal Corps, Canadian Provost Corps, Corps Protection Company |
| CPC | Canadian Postal Corps |
| CPCCMF(ADHOC) | Canadian Pioneer Company, Central Mediterranean Force |
| CPCD | Canadian Provost Corps Depot |
| CPCO/S(PU) | Canadian Postal Corps Overseas, (Postal Units) |
| CPCURCASC | Canadian Port Clearance Unit, Royal Canadian Army Service Corps |
| CPD GROUP GARR | Cape Penninsular Defence Group |
| CPDGR | Cape Peninsular Defence Garrison Regiment |
| CPDPRCE | Canadian Pile Driving Platoon, Royal Canadian Engineers |
| CPDRCAPC | Command Pay Detachment, Royal Canadian Army Pay Corps |
| CPF | Canadian Patriotic Fund (Front) |
| CPGR(AF) | Cape Peninsular Garrison Regiment (Auxiliary Force) |
| CPI | Corps of Permanent Instructors |
| CPinME | Canadian Personnel in Middle East |
| Cpl | Corporal |
| CPL MECH | Corporal Mechanic |
| CPL MJR | Corporal Major |
| CPLAM | Corporal Ambulance |
| CPMH | Camp Petawawa Military Hospital |
| CPMHRCAMC | Chorley Park Military Hospital, Royal Canadian Army Medical Corps |
| CPMMLRCOC | Canadian Pilot Model Mobile Laundry, Royal Canadian Ordnance Corps |
| CPO | Chief Petty Officer, Civilian Personnel Officer, Command Pay Office |
| CPO MECH | Chief Petty Officer Mechanic |
| CPR | Canadian Pacific Railway |
| CPR, COOPER | Cooper |
| CPRC | Ceylon Planters Rifle Corps |
| CPRD | Canadian Public Relations Detachment |
| CProC | Canadian Provost Corps |
| CPRS | Canadian Public Relations Services |
| CPRU | Canadian Public Relations Unit |
| CPS | Canadian Planning Staff, Canadian Publishing Section |
| CPS GUIDES | Corps of Guides |
| Cpt, Capt | Captain |
| CPTC | Canadian Parachute Training Centre |
| CPTCAC | Canadian Pioneer Troop, Canadian Armoured Corps |
| CPTHO | Captain of Hospital Orderlies |
| CPTR FMN | Carpenter Foreman |
| CPTRE | Captain Royal Engineers |
| CPTU | Canadian Parachute Training Unit |
| CPTUCPC | Canadian Postal Tracing Unit, Canadian Postal Corps |
| CPW/S(ADHOC)RCEME | Canadian Port Workshop (Ad Hoc), Royal Canadian Electrical and Mechanical Engineers |
| CPW/S(ADHOC)RCOC | Canadian Port Workshop (Ad Hoc), Royal Canadian Ordnance Corps |
| CPWEU | Canadian Petroleum Warfare Experimental Unit |
| CQM HVLDR | Company Quarter Master Havildar |
| CQMS, CQM SJT | Company Quarter Master Sergeant |
| CR | Central Registry, Chaudiere Regiment, Confirmation of Rank, Control Ratings, Control Rate, Commander, Cheshire Regiment, Connaught Rangers, Cyprus Regiment |
| CR(C)E | Commander, Royal (Canadian) Engineers |
| CR(T) | Calgary Unit (Tank) |
| CR/AC | Canadian Re-allocation Centre |
| CRA | Commanding (or Commander), Royal Artillery, Compulsory Retirement Age |
| CRADOCK CDO | Cradock Commando |
| CRASC | Commander, Royal Army Service Corps |
| CRB(M) | Canadian Rifle Battalion, Career Review Board (Medical) |
| CRBRCA | Canadian Rocket Battery, Royal Canadian Artillery |
| CRBW/SRCEME | Canadian Radar Battery Workshop, Royal Canadian Electrical and Mechanical Engineers |
| CRC | Canadian Reception Camp, Casualty Retraining Centre, Chief Registration Clerk, Control Reporting Centre |
| CRCAMC | Company Royal Canadian Army Medical Corps |
| CRCASCATBC | Company Royal Canadian Army Service Army Tank Brigade Company |
| CRCC | Canadian Railway (or Road) Construction Company |
| CRCE | Company Royal Canadian Engineers, Chief Railway Construction Engineer |
| CRCE(PB) | Commander Royal Canadian Engineers (Permanent Bridges) |
| CRCE(W) | Commander Royal Canadian Engineers (Works) |
| CRCEME | Company Royal Canadian Electrical and Mechanical Engineers |
| CRCL | Canadian Red Cross List |
| CRCORU | Canadian Royal Canadian Ordnance Corps Reinforcement Unit |
| CRCR | Canadian Reserve Calvary Regiment |
| CRCRCAMC | Casualty Retraining Centre, Royal Canadian Army Medical Corps |
| CRCRCEME | Canadian Recovery Company, Royal Canadian Electrical and Mechanical Engineers |
| CRCRCOC | Canadian Recovery Company, Royal Canadian Ordnance Corps |
| CRD | Canadian Reception (or Remount) Depot |
| CRD(LS) | Canadian Repatriation Depot (LS) |
| CRDFT(S)C, CRDFTC | Canadian Radio Detection Finder Training (School) Centre |
| CRE | Commanding (or Commander) Royal Engineers, Corps of Royal Engineers |
| CRecs | Controller of Records |
| CREME | Commander Royal Electrical and Mechanical Engineers |
| CRETFORCE | Crete Force |
| CRFTTC | Canadian Reinforcement Transit Camp |
| CRGTP | Canadian Reinforcement Group Transit Platoon |
| CRGTPRCASC | Canadian Reinforcement Group Transit Platoon, Royal Canadian Army Service Corps |
| CRI | Chinese Regiment of Infantry |
| CRLE | Canadian Radio Location Establishment |
| Crmn | Crewman |
| CRN | Change Regimental Number |
| CRO | Canadian Records Office, Canadian Central Registry, Chief Recruiting Officer, Corps Roads Officer, Corps Reserve of Officers |
| CROCRCE | Canadian Railway Operation Company, Royal Canadian Engineers |
| CRP | Control Reporting Point, Clyde River Patrol |
| Crpl | Corporal |
| CRR(PLDG) | Canadian Reconnaissance Regiment (Princess Louise Dragoon Guards) |
| CRRCA | Coast regiment, Royal Canadian Artillery |
| CRS | Canadian Recce Squadron, Central Recruiting Troop |
| CRS-CIB | Canadian Recce Squadron-Canadian Infantry Brigade |
| CrStGeo | Cross of Saint George (Russia) |
| CRT | Canadian Railway Troops, Continuous Reserve Training |
| CRTC | Canadian Radar Training Centre |
| CRTC(A) | Canadian Reconnaissance Training Centre (Active) |
| CRTC(R) | Canadian Reconnaissance Training Centre (Reserve) |
| CRU | Canadian Reinforcement Unit, Chemical Research Unit, Control and Reporting Unit |
| CRUPU | Canadian Reinforcement Units Postal Units |
| CRURCA | Canadian Rocket Unit, Royal Canadian Artillery |
| Crypto | Cryptographer |
| CS | Christian Science (Church), Cypher Service, Commandant Staff, Cease, Communicator |
| CS&AC | Canadian Selection & Appraisal Centre |
| CS&TO | Camp Supply & Transport Officer |
| CS(No) | Admiralty File Number |
| CSA | Canadian Small Arms, Consular Shipping Advisor |
| CSAFVIRCEME | Canadian Section Armoured Fighting Vehicles Inspectorate, Royal Canadian Electrical and Mechanical Engineers |
| CSAFVTS | Canadian Section Armoured Fighting Vehicles Technical Staff |
| CSAI | Canadian School of Army Instruction |
| CSAS(E) | Canadian Small Arms School (Eastern) |
| CSAS(WC) | Canadian Small Arms School (Western Canada) |
| CSATC | Canadian Small Arms Training Centre |
| CSB | Canadian Shipping Board |
| CSBASRAC | Canadian Special BASRA Company |
| CSBD | Canadian Special Base Depot |
| CSC | Cadet Services of Canada, Canadian Service College, Chiefs of Staff Committee, Corporal Signal Corps, Commissariat Staff Corps |
| CSCC | Canadian Section Claims Commission |
| CScotR | Canadian Scottish Regiment |
| CSCRCOC | Canadian Salvage Corps, Royal Canadian Ordnance Corps |
| CSDS | Canadian Special Driving School |
| CSE | Color Sergeant |
| CSEAFHQ | Canadian Section Echelon Allied Forces, Headquarters |
| CSEC | Canadian Special Employment Company |
| CSEE | Canadian Signals Experimental Establishment |
| CSEF | Canadian Siberian Expeditionary Force |
| CSG | Comba Support Group, Clerk Stenographer Group |
| CSGHQ2ndEch | Canadian Section General Headquarters, 2nd Echelon |
| CSGHQE | Canadian Section General Headquarters Echelon |
| CSHQBGNR | Canadian Section Headquarters, Brussels, GRN |
| CSHQCC | Cypher Section Headquarters Canadian Corps |
| CSI | Companion of the Star of India |
| CSIB | Canadian Special Infantry Battalion |
| CSIC, CSICoy | Canadian Special Infantry Company |
| CSIG | Corps of Signals |
| CSIS | Canadian Security and Intelligence Service |
| CSKSU | Canadian Surplus Kit Storage Unit |
| CSM, CS MJR | Company Sergeant Major |
| CSME | Canadian School of Military Engineering |
| CSMH | Christie Street Military Hospital |
| CSO | Chief Signals Officer |
| CSofA | Canadian School of Artillery |
| CSofAA | Canadian School of Army Administration |
| CSofI | Canadian School of Infantry |
| CSOI | Commandant School of Instruction |
| CSOR | Chief Staff Officer Reserves |
| CSP | Convoy Stopping Point |
| Csr | Cruiser |
| CSR&DE | Canadian Signals Research & Development Establishment |
| CSR(MG) | Canadian Scottish Regiment (Machine Gun) |
| CSRCCS | Construction Section, Royal Canadian Corps of Signals |
| CSRU | Canadian Signals Reinforcement Unit |
| CSS | Combat Support Services |
| CSSB | Canadian Special Service Battalion |
| CSSCRCOC | Canadian Special Stores Company, Royal Canadian Ordnance Corps |
| CSSD | Canadian Special Salvage Detachment |
| CSTC | Canadian Signal Training Centre |
| CSTech | Communications Systems Technician |
| CSTTB | Canadian Standing Trades Test Board |
| CSTV | Coil Skids Towing Vessel |
| CSUPS | Combat Supplies |
| CSupt | Commodore Superintendant |
| CSURCEME | Canadian Servicing Unit, Royal Canadian Electrical and Mechanical Engineers |
| CSURCOC | Canadian Salvage Units, Royal Canadian Ordnance Corps |
| CSV | Camp Staff Volunteer |
| CSVH | Combat Support Vehicle Heavy |
| CSVL | Combat Support Vehicle Light |
| CSWSTRCCS | Canadian Shock Wave Section Type, Royal Canadian Signals Corps |
| CSWTS | Canadian Section Weapons Technical Staff |
| CT | Communication Trench, Component Transfer |
| CT BN | Canadian Training Battalion |
| CT COY | Camel Transport Company |
| CT GDS | Cape Town Guards |
| CT HIGHRS | Cape Town Highlanders |
| CT(CFC)TC | Camp Tremblay (Canadian Forestry Corps) Training Centre |
| CTA | Canadian Troop Aldershot |
| CTACRCASC | Corps Troop Ammunition Company, Royal Canadian Army Service Corps |
| CTCEA | Camel Transport Corps Egyptian Army |
| CTCRCE | Canadian Tunnelling Company, Royal Canadian Engineers |
| CTCSPCProC | Canadian Traffic Control Section Provost, Canadian Provost Corps |
| CTCURCACMF | Canadian Traffic Control Unit, Royal Canadian Artillery, Central Mediterranean Force |
| CTCW | Canadian Transit Camp Wing |
| CTD | Canadian Training Depot (or Division) |
| CTDCPC | Canadian Tobacco Depot, CPC (see above for various meanings of CPC) |
| CTDS(ER) | Canadian Tank Delivery Squadron (Elgin Regiment) |
| CTDSSD | Canadian Tank Delivery Squadron Signals Detachment |
| CTDUCAC | Canadian Tank Demonstration Unit, Canadian Armoured Corps |
| CTF | Commander Task Force |
| CTFARCAMC | Canadian Training Field Ambulance, Royal Canadian Army Medical Corps |
| CTH | Canadian Troops Hereford, Cape Town Highlanders |
| CTLC | Canadian Technical Liaison Group |
| CTMU | Canadian Town Major Unit |
| CTN & TRP DK STD | Canteen & Troop Deck Steward |
| CTN CLK | Canteen Clerk |
| CTN SR | Canteen Server |
| CtnAsst, CTN ASST | Canteen Assistant |
| CtnMngr, CTN MGR , CTN MNGR | Canteen Manager |
| CTO | Central Telegraph Office, Chief Treasury Officer |
| CTO(N) | Chief Treasury Officer (Navy) |
| CTOO/S | Canadian Treasury Office Overseas |
| CTP | Canadian Transport Platoon, Course Training Plan |
| CTPCRCASC | Corps Troops Petrol Company, Royal Canadian Army Service Corps |
| CTPDC | Cape Town Permanent Duty Corps |
| CTPRCASC | Canadian Transport (or Tipper) Platoon, Royal Canadian Army Service Corps |
| CTps | Corps Troops |
| CTR | Controller |
| CTRCA | Calibration Troop, Royal Canadian Artillery |
| CtRep | Court Reporter |
| CTS | Canadian (or Composite) Training School, Conversion Training Squadron, Clothe the Soldier |
| CTSC | Corps Troops Supply Column |
| CTSCRCASC | Corps Troop Supply Column, Royal Canadian Army Service Corps |
| CTTC | Canadian Tank Transport Company |
| cttee | Committee |
| CTTW/SRCEME | Canadian Tank Troops Workshop, Royal Canadian Electrical and Mechanical Engineers |
| CTTW/SRCOC | Canadian Tank Troops Workshop, Royal Canadian Ordnance Corps |
| CU | Camp Utopia, Conducting Unit, Caribbean-United Kingdom Convoy, Conversion (or Communications) Unit |
| CULLINAN'S H | Cullinan's Horse |
| CUNEF | Canadian Component United Nations Emergency Force (Middle East) |
| CUSTOMS | His (or Her) Majesty's Customs |
| CUSTOMS DEPT MEF | Customs Department Mediterranean Expeditionary Force |
| CUSTOMS PS | Customs Preventive Service |
| CV | Combat Vehicle, Cross of Valour, Communicator (V) |
| CVA&CG | Canadian Vehicle Assembly & Control Group |
| CVBC | Cape Volunteer Bearer Corps |
| CVD | Commercial Vessel Defensive, Central Vehicle Depot |
| CVDTURCAMC | Canadian Venereal Disease Treatment Unit, Royal Canadian Army Medical Corps |
| CVE | Carrier Vessel Escort |
| CVHGCASF | Company Veterans Home Guard, Canadian Active Service Force |
| CVIRCEME | Canadian Vehicle Inspectorate, Royal Canadian Electrical and Mechanical Engineers |
| CVO | Commander of the Royal Victorian Order |
| CVP | Convoy Programme |
| CVR(T) | Combat Vehicle Reconnaissance Tracked |
| CVR(W) | Combat Vehicle Reconnaissance Wheeled |
| CVSM | Canadian Volunteer Service Medal |
| CVWS | Canadian Vehicle Waterproofing School |
| CW | Chemical Warfare, Communicator (W), Commissioned Warrant |
| CW(No) | Admiralty Record Office File |
| CW/S&PC | Canadian Workshop and Park Company |
| CWAAF | Canadian Women's Auxiliary Air Force |
| CWAC | Canadian Womens' Army Corps |
| CWACBTC | Canadian Women's Army Corps, Basic Training Centre |
| CWACCS | Canadian Women's Army Corps, Composite Stores |
| CWACDO | Canadian Women's Army Corps, District Orders |
| CWACMB | Canadian Women's Army Corps, Military Band |
| CWACO | Canadian Women's Army Corps, Ottawa |
| CWACPB | Canadian Women's Army Corps, Pipe Band |
| CWACTC | Canadian Women's Army Corps, Training Centre |
| CWB | Canadian Wives Bureau |
| CWC | Chemical Warfare Course |
| CWDL | Chemical Warfare Defence Laboratory |
| CWGC | Commonwealth War Graves Commission |
| CWL | Chemical Warfare Laboratories |
| CWM | Canadian War Museum |
| CWNS | Canadian War Narrative Section |
| CWR | Central War Room |
| CWRO | Canadian War Records Office |
| CWS(IC) | Canadian Wireless Section (Intelligence Corps) |
| CWSF | Commander Western Sea Frontier |
| CWSRCE | Canadian Works Section, Royal Canadian Engineers |
| CWT | Hundred (or Centi) Weight |
| CWTC | Chemical Warfare Training Centre |
| CWTD | Cold Weather Test Trail Detachment |
| CWTV | Calibration Wireless Telegraph Vessel |
| CWWW | CWWW - Council for Women in War Work |
| CXO | Chief Examination Officer |
| CY | Cheshire Yeomanry |
| Cy | Company |
| Cyc | Cyclist |
| CYC BN | Cyclist Battalion |
| CYC COY | Cyclist Company |
| CYLR | City of London Rifles |
| CYLY | City of London Yeomanry (Rough Riders) |
| CYPRUS R | Cyprus Regiment |
| CZ | Clyde Division - Royal Naval Volunteer Reserve |
| CZT | Civil Zone Time |