- G -
| Abbreviation | Meaning |
|---|---|
| G | Gunnery |
| G | General Staff Branch of the Staff |
| G (Ops) | General Staff (Operations) |
| G&SF | Grey & Simcoe Foresters |
| G/C | Group Captain |
| GA | Gunnery Armourer |
| GAF | Granted Annual Furlough |
| GAT | Guantanamo-Trinidad convoy |
| GB | Garrison Battalion |
| GBCODRCOC | Goose Bay Company Ordnance Depot, Royal Canadian Ordnance Corps |
| GBD | Goose Bay Defences |
| GBE | Knight Grand Cross of the Order of the British Empire |
| GBMS | Great Britain Merchant Ships (a wireless message routine) |
| GBSRCASC | Goose Bay Section, Royal Canadian Army Service Corps |
| GC | George Cross |
| GC | Greek Catholic |
| GC | Good Conduct Badge |
| GCACon | Ground Controlled Approach Controller |
| GCB | Knight Grand Cross of the Order of the Bath |
| GCCS | Government Code and Cypher School |
| GCM | General Court Martial |
| GCMG | Knight Grand Cross of St. Michael and St. George |
| GCMG | Knight Grand Cross of the Order of St.Michael and St.George |
| GCT | Greenwich Civil Time |
| GCVO | Knight Grand Cross of the Royal Victorian Order |
| GD | General Duties |
| GD | Group Duties |
| Gdefmn | Ground Defenceman |
| Gdfk | Goldflake |
| GDL&RS | Guard Detachment Lanark & Renfrew Scottish Regiment |
| Gdsm | Guardsman |
| Gdsm | Guardsman |
| GDSMGR | Guards Machine Gun Regiment |
| Gdsmn | Guardsman |
| GE | Garrison Engineer |
| GEC | General Employment Company |
| Gen | General |
| Gen Hosp | General Hospital |
| Gen Pnr Coy | General Pioneer Company |
| Geo | Geographical Section, General Staff |
| GF | Operation ''Goldflake'' |
| GFORCE | Labrador |
| GGDS | Grenadier Guards |
| GGFG | Governor General's Foot Guards (Now 21st Armoured Regiment) |
| GGHG | Governor General's Horse Guards |
| GH | General Hospital |
| GHMHRCAMC | Gordon Head Military Hospital, Royal Canadian Army Medical Corps |
| GHQ | General Headquarters |
| GHQ | Group Headquarters |
| GHQ&LofCTSI | General Headquarters and Line of Communication Troops Service Increment |
| GHQEIC | General Headquarters Echelon Indian Command |
| GHQRUHofC | General Headquarters Reconnaissance Unit Highlanders of Canada |
| GHQSWPA | General Headquarters South West Pacific Area |
| GHRCAMC | General Hospital, Royal Canadian Army Medical Corps |
| GI | Gunnery Instructor |
| GIRO | General Instructions Routing Officers |
| GIS | Ground Instructors School |
| GJL | Granted Jewish Leave |
| GlamYeo | Glamorgan Yeomanry |
| GLICHRCAMC | Grande Ligne Internal Camp Hospital, Royal Canadian Army Medical Corps |
| GloucR | Gloucestershire Regiment |
| GLS | General Labour Section |
| GM | George Medal |
| GMA | Gibraltar, Morocco Area |
| GMHRCAMC | Gaspe Military Hospital, Royal Canadian Army Medical Corps |
| GMHRCAMC | Gravenhurst Military Hospital, Royal Canadian Army Medical Corps |
| GMO | Gun Mounting Overseer |
| GMP | Garrison Military Police |
| GMT | Greenwich Mean Time |
| GN | Guantanamo-New York convoy |
| GNA | Greek Naval Attache |
| GNLO | Greek Naval Liaison Officer |
| Gnr | Gunner |
| G'nr | Gunner |
| GO | General Order |
| GO | Greek Orthodox (Church) |
| GO | Gunnery Officer |
| GO(s) | General Order(s) |
| GOC | General Officer Commanding |
| GOC (in C) | General Officer Commanding (in Chief) |
| GOCHMSRCAMC | Garnons Officers Convalescent Home Military Staff, Royal Canadian Army Medical Corps |
| GOCinC | General Staff (Operations) |
| GOCRA | General Officer Commanding Royal Artillery |
| GOCRM | General Officer Commanding Royal Marines |
| GOH | German Official History |
| GOR | Gun Operations Room |
| GordHighrs | Gordon Highlanders |
| GOSShip | Norwegian Whaler |
| Gov-Gen | Governor General |
| Gp | Group |
| GPCRCE | General Pioneer Company, Royal Canadian Engineers |
| GPL | Granted Privileged Leave |
| GPMHRCAMC | Grande Prairie Military Hospital, Royal Canadian Army Medical Corps |
| GPO | Gun Position Officer |
| GPOA | Gun Position Officer Assistant |
| GPSRCE | General Pioneer Section, Royal Canadian Engineers |
| GR | Group (US) |
| GRC | Graves Registration Cross |
| Grey Sim For | Grey and Simcoe Forester |
| Grn | Garrison |
| GRO | General Routine Order |
| GRP | Group |
| GRS | General Reconnaissance Squadron |
| GRS | General Reconnaissance School |
| GRSTD | Gun Room Steward |
| GRT | Gross Registered Tonnage |
| GRU | General Reinforcement Unit |
| GS | General Service |
| GS | General Staff |
| GS | Greek Ship |
| GS | General Staff |
| GS | Greenland-Sydney Convoy |
| GSB | General Staff Branch |
| GSC | Gunnery Staff Course |
| GSF | Gulf Sea Frontier |
| GSGS | Geographical Section General Staff |
| GSL | Granted Short Leave |
| GSO | General Staff Officer |
| GSO | General Staff Order |
| GSO 1, 2, or 3 | General Staff Officer, 1st, 2nd or 3rd Grade |
| GSO1 | General Staff Officer, Grade 1 |
| GSP | General Staff Planning |
| Gsr | Greaser |
| GSSR | General Service Special Reserve |
| GSW | Gun Shot Wound |
| GTC | Government Telegraph Code |
| GTC(RCASC)CD | General Transport Company, (Royal Canadian Army Service Corps), Canadian Division |
| Gtd | Granted |
| GU | Gibraltar-United States Convoy |
| GU | Gunner |
| GUI | Guide |
| Gunner (T) | Torpedo Gunner |
| GV | Gate Vessels |
| GWCBD | "G" Wing Canadian Base Depot |
| GWCFC | General Workshop, Canadian Field Company OR Canadian Forestry Corps |
| GZ | Guantanamo-Panama convoy |