| Regimental number | 7299 |
| Place of birth | Sydney New South Wales |
| Religion | Roman Catholic |
| Occupation | Clerk |
| Address | Paddington, New South Wales |
| Marital status | Single |
| Age at embarkation | 18 |
| Next of kin | Father, E.W. O'Reilly, 172 Jersey Road, Paddington, Sydney, New South Wales |
| Enlistment date | 15 January 1917 |
| Rank on enlistment | Private |
| Unit name | 2nd Battalion, 24th Reinforcement |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board RMS Osterley on 10 February 1917 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 2nd Battalion |
| Fate | Returned to Australia 6 May 1919 |
| Date of death | 7 June 1973 |
| Place of burial | Botany Cemetery |