| Slessor | J | | | 1st Battalion
Source: QSA and KSA medal rolls | Gordon Highlanders |
| Sletcher | S | | | Source: WO100/284 | Naauwport TG |
| Slett | A E | | | 2nd Battalion
Source: QSA and KSA medal rolls | Manchester Regiment |
| Slevens | F | | | 1st Battalion, Volunteer Service Company
Source: QSA and KSA medal rolls | Leicestershire Regiment |
| Slevenson | J | | | Received the Mediterranean Medal
3rd Battalion
Source: Medal roll WO100 368 | (Queen's Own) Royal West Kent Regiment |
| Slevin | A | | | 3rd Battalion
Source: Medal rolls | Prince of Wales's Leinster Regiment (Royal Canadia |
| Slevin | E | 5112 | Private | QSA (2).
Source: QSA medal rolls | 10th (The Prince of Wales's Own Royal) Hussars |
| Slevin | Francis | 2161822 | | Attested: Dec 1900. Source: CMP 52 | Cape Police |
| Slevin | M | | | 1st Battalion
Source: QSA and KSA medal rolls | Royal Irish Regiment |
| Slevin | W | | | 2nd Battalion
Source: Medal rolls | Prince of Wales's Leinster Regiment (Royal Canadia |
| Slevin | W | 5135 | Private | Slightly wounded. Near Zaaihoek, 18 August 1901
Source: South African Field Force Casualty Roll | 6th (Inniskilling) Dragoons |
| Slevin | W J | 30509 | Private | Source: QSA Medal Rolls | 51st Company, 12th Btn, IY |
| Sleward | J | | | 2nd Battalion
Source: QSA and KSA medal rolls | (Duke of Cambridge's Own) Middlesex Regiment |
| Slewart | Angus | | | Source: QSA and KSA medal rolls | Western Province Mounted Rifles |
| Slian | S | | | 3rd Battalion
Source: QSA and KSA medal rolls | Lincolnshire Regiment |
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