| Orpen | | | Trooper | BSACM Rhodesia 1896 (0).
Source: BSACM rolls | Bulawayo Field Force |
| Orpen | A F | | | BSACM Mashonaland 1890 (0).
Source: BSACM rolls | British South Africa Police |
| Orpen | Conolly D'Arcy D'Erpingham | | | BSACM Mashonaland 1890 (1) Rhodesia 1896. 1896: Tpr. Gifford's Horse.
Source: BSACM rolls | British South Africa Police |
| Orpen | D | | Trooper | BSACM Rhodesia 1896 (0).
Source: BSACM rolls | Mashonaland Mounted Police |
| Orpen | G | | Trooper | BSACM Rhodesia 1896 (0).
Source: BSACM rolls | Matabeleland Relief Force |
| Orpin | C D D | | Trooper | BSACM Rhodesia 1896 (0).
Source: BSACM rolls | Bulawayo Field Force |
| Orr | Clair A | | | BSACM Mashonaland 1890 (0).
Source: BSACM rolls | Pioneer Corps |
| Ortner | E G | | Trooper | BSACM Rhodesia 1896 (0).
Source: BSACM rolls | Mashonaland Mounted Police |
| Ortner | Evan George | | Sergeant | BSACM Matabeleland 1893 (1) Rhodesia 1896. 1896: Tpr. MRF.
Source: BSACM rolls | Victoria Column |
| Osborne | G | | Sergeant | BSACM Mashonaland 1890 (0).
Source: BSACM rolls | British South Africa Police |
| Osborne | G | | Trooper | BSACM Rhodesia 1896 (0).
Source: BSACM rolls | Matabeleland Relief Force |
| Osborne | John William | 4120 | Private | BSACM Rhodesia 1896 (0).
Source: BSACM rolls | York and Lancaster Regiment |
| Osborne | W | 16982 | Sergeant | BSACM Rhodesia 1896 (0). Egypt dated reverse (1) Suakin 1885 (16982 Sapr., 26th Co. R. E.); BSACM Rhodesia 1896 (Sgt., 43 Co. R. E.); QSA (6) Cape Colony, Tugela Heights, Orange Free State, Relief of Ladysmith, Transvaal, S. A. 1901 (Serjt., RE.); Army LS&GC VR (Sergt. R. E.); Khedive's Star 1882, impressed on the reverse (Sapr., 17th Co. R. E.). DNW July 1993 £460.
Source: BSACM rolls | Royal Engineers |
| Osmaston | Osmond Gordon | 398 | Trooper | BSACM Mashonaland 1897 (0).
Source: BSACM rolls | British South Africa Police |
| Osterberg | A M | | Trooper | BSACM Rhodesia 1896 (0).
Source: BSACM rolls | Salisbury Field Force |
| Osterberg | Andrew M | | Trooper | BSACM Rhodesia 1896 (0).
Source: BSACM rolls | Gwelo Volunteers |
| Oswald | C | | Trooper | BSACM Rhodesia 1896 (0).
Source: BSACM rolls | Gwelo Volunteers |
| Othick | Thomas | 4079 | Private | BSACM Matabeleland 1893 (0).
Source: BSACM rolls | (Duke of Wellington's) West Riding Regiment |
| Ottey | W | 2409 | SQMS | BSACM Rhodesia 1896 (0).
Source: BSACM rolls | Army Ordnance Corps |
| Otto | | | Trooper | BSACM Rhodesia 1896 (0).
Source: BSACM rolls | Bulawayo Field Force |
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