| Regiment |
Abbreviation |
| South African Regiments and Services |
SA |
| South Cork Militia |
CorkMil |
| South Irish Horse |
SIH |
| South Lancashire Regt. |
SthLancs |
| South Staffordshire Regiment |
SthStaffs |
| South Wales Borderers |
SWB |
| Special Air Aervice Regiment |
SAS |
| St. John's Ambulance Brigade/Association |
SJAB |
| Straits Settlement Volunteers |
Col |
| Tank Corps |
TC |
| Territorial Force Nursing Service |
TFNS |
| Trench Mortar Battery (not really a distinct unit) |
TMB |
| Unidentified |
? |
| United Irishmen |
UI |
| United States forces |
USA |
| Various (e.g. colonial regts.) |
Var |
| Voluntary Aid Detachment |
VAD |
| Warwickshire Regt. |
RWarR |
