| | | |
| SFTSS | |
| SIEGE BATTERIES | |
| SIGNALS SCHOOLS | |
| SIGNALS UNITS | |
| SIME ROAD PRISONER OF WAR CAMP | |
| SINGAPORE FORCES | |
| SKI SCHOOL, LEBANON | |
| SOUTH AFRICAN FORCES | |
| SOUTH AFRICAN SOLDIERS ASSOCIATION (ASSOCIATION OF AUSTRALIAN VETERANS OF THE BOER WAR) | |
| SOUTH AUSTRALIA LINES OF COMMUNICATION AREA | |
| SOUTH AUSTRALIAN MILITARY FORCES | |
| SOUTH AUSTRALIAN MOUNTED RIFLES | |
| SOUTH AUSTRALIAN SCOTTISH REGIMENT | |
| SOUTH PACIFIC AREA | |
| SOUTH SYDNEY REGIMENT | |
| SOUTH WEST PACIFIC AREA | |
| SOUTHERN COMMAND | |
| SOVIET FORCES | |
| SPARROW FORCE | |
| SPECIAL AIR SERVICE UNITS SPECIAL AIR SERVICES REGIMENT | |
| SPECIAL CONTINGENTS | |
| SPECIAL FORCES | |
| SPECIAL HOSPITALS | |
| SPECIAL INVESTIGATION BRANCH | |
| SRD VESSELS | |
| SS ADELAIDE | |
| SS ADVISER | |
| | BT TRANSPORT SHIPS | |
| SS AENEAS | |
| SS AFRIC | |