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| CATHOLIC UNITED SERVICES AUXILIARY | |
| CAVALRY REGIMENTS | |
| CAVALRY UNITS | |
| CAVALRY UNITS (BOER WAR PERIOD) | |
| CAVALRY UNITS (W1 PERIOD) | |
| CAVALRY UNITS (W2 PERIOD) | |
| CENEF | |
| CENSORSHIP UNITS | |
| CENTRAL BUREAU OF INTELLIGENCE | |
| CENTRAL FLYING SCHOOLS | |
| CENTRAL FLYING SCHOOL, CAMDEN | |
| CENTRAL FLYING SCHOOL, EAST SALE | |
| CENTRAL FLYING SCHOOL, LAVERTON | |
| CENTRAL FLYING SCHOOL, POINT COOK | |
| CENTRAL ORDNANCE DEPOTS | |
| CENTRAL PACIFIC AREA | |
| CHANGI GAOL | |
| CHEM WAR RES EXP SEC | |
| CHEMICAL WARFARE RESEARCH AND EXPERIMENTAL SECTION | |
| CHEMICAL WARFARE UNITS | |
| CHIEF ENGINEERS (WORKS) | |
| CHILDREN OVERSEAS RECEPTION BOARD COUNCIL | |
| CHINESE FORCES | |
| CHINESE LABOUR CORPS | |
| CHURCH OF ENGLAND NATIONAL EMERGENCY FUND | |
| CINEMAS | |
| CIPHER UNITS | |
| CITIZEN'S MILITARY FORCE | |
| CITY OF BALLARAT REGIMENT | |
| CITY OF ESSENDON REGIMENT | |