| | | |
| OTUS | |
| OXLEY REGIMENT | |
P unit names | |
| PACIFIC ISLANDS DEPOT BATTALION | |
| PACIFIC ISLANDS REGIMENT | |
| PACK TRANSPORT COMPANIES | |
| PAPUAN INFANTRY BATTALION | |
| PARATROOP UNITS | |
| PARRAMATTA AND BLUE MOUNTAINS REGIMENT | |
| PAY UNITS PERSIAN FORCES | |
| PERSONNEL MOVEMENT UNITS | |
| PETROL SUPPLY UNITS | |
| PHILANTHROPIC ORGANISATIONS | |
| PHOTOGRAPHIC INTERPRETATION UNITS | |
| PHOTOGRAPHIC RECONNAISSANCE UNITS | |
| PHOTOGRAPHIC UNITS | |
| PHYSICAL AND RECREATION TRAINING SCHOOL, FRANKSTON | |
| PIONEER TRAINING BATTALION | |
| PIONEER UNITS | |
| PIR | |
| PLASTIC SURGERY UNITS | |
| PNR TRNG BN | |
| POLICE | |
| POLISH FORCES | |
| PORT CONSTRUCTION COMPANIES | |
| PORT MORESBY COAST ARTILLERY | |
| PORT OPERATING UNITS | |
| PORTUGUESE FORCES | |
| POST MASTER GENERAL'S DEPARTMENT | |
| POST OFFICES | |