| Nolte | L R | Kommandant | Source: Roll of DTD recipients |
| Nussey | A H M | Veldkornet | Source: Roll of DTD recipients |
| O/'Reilly | W G | Luitenant | Source: Roll of DTD recipients |
| Oberholzer | D C | Veldkornet | Source: Roll of DTD recipients |
| Oberholzer | H S | Kaptein | Source: Roll of DTD recipients |
| Obermeyer | A P | Luitenant | Source: Roll of DTD recipients |
| Oelrich | H E B | Ass. Veldkornet en Adj. | Source: Roll of DTD recipients |
| Olen | C L | Kaptein | Source: Roll of DTD recipients |
| Olivier | C H H | Kommandant | Source: Roll of DTD recipients |
| Olivier | H J | Ass. Veldkornet en Adj. | Source: Roll of DTD recipients |
| Olivier | J H | Ass. Hoof. Komdt. | Source: Roll of DTD recipients |
| Olivier | J H C | Luitenant en Adj. | Source: Roll of DTD recipients |
| Olivier | J L | Veldkornet | Source: Roll of DTD recipients |
| Olivier | O J | Kommandant | Source: Roll of DTD recipients |
| Oosthuizen | P P | Veldkornet | Source: Roll of DTD recipients |
| Oosthuizen | S | Kommandant | Source: Roll of DTD recipients |
| Oosthuizen | S F | Vecht Generaal | Source: Roll of DTD recipients |
| Opperman | D J E | Kommandant | Source: Roll of DTD recipients |
| Opperman | J D | Generaal | Source: Roll of DTD recipients |
| Opperman | T P | Veldkornet | Source: Roll of DTD recipients |
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