| Sutton | A C | 193 | Trooper | Source: Nominal roll in WO127 |
| Sutton | Henry | 41829 | Trooper | Source: Nominal roll in WO127 |
| Sutton | Jeremiah | 191 | Trooper | Source: Nominal roll in WO127 |
| Swanepoel | Daniel | 40056 | Trooper | Source: Nominal roll in WO127 |
| Swanson | Albert Edward | 35614 | Trooper | Source: Nominal roll in WO127 |
| Swartz | Daniel | 32535 | Trooper | Source: Nominal roll in WO127 |
| Swift | D | 899 | Trooper | Source: Nominal roll in WO127 |
| Switzer | Robert Edwin | 157 | Trooper | Source: Nominal roll in WO127 |
| Sydney | Frederick | 326 | Trooper | Source: Nominal roll in WO127 |
| Sykes | Harold Platt | | Captain | Source: Nominal roll in WO127 |
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