| Poland | James Henry | 5109 | Sergeant | 2nd Brabant's Horse
Source: Nominal roll in WO127 |
| Pollitt | James Henry | | | Source: Attestation paper in WO126 |
| Pollitt | James Henry | 20299 | Sergeant | 2nd Brabant's Horse
Source: Nominal roll in WO127 |
| Ponsonby | TR | 505 | Trooper | 2nd Brabant's Horse
Source: Nominal roll in WO127 |
| Poole | Ernest Bertram | | | Source: Attestation paper in WO126 |
| Poole | Henry George | 7062 | Trooper | 2nd Brabant's Horse
Source: Nominal roll in WO127 |
| Pope | Ernest Frederick | | | Source: Attestation paper in WO126 |
| Porteous | William | | | Source: Attestation paper in WO126 |
| Porteous | William | 4289 | Trooper | 2nd Brabant's Horse
Source: Nominal roll in WO127 |
| Porter | Robert | 38166 | | Source: Attestation paper in WO126 |
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