| Surname | Initials | Rank | Army No. | ||
|---|---|---|---|---|---|
| O'Donnell | W | Private | 7022337 | ||
| O'Donoghue | T O | Lance Corporal | P/7773 | ||
| O'Donoghue | T | Warrant Officer I | 7687072 | ||
| O'Donovan | J | Lance Corporal | P/7490 | ||
| O'Donovan | J | Lance Corporal | P/19600 | ||
| O'Dowd | P | Lance Corporal | 13072037 | ||
| O'Driscoll | M | Lance Corporal | P/17263 | ||
| O'Driscoll | P C | Lance Corporal | 3653519 | ||
| O'Farrell | E C | Lance Corporal | 7685310 | ||
| O'Gara | P J | Private | 2584144 |