| Regimental number | 50975 |
| Religion | Roman Catholic |
| Occupation | Timber merchant |
| Address | Wellington, New South Wales |
| Marital status | Single |
| Age at embarkation | 24 |
| Next of kin | Father, J O'Brien, Maughan Street, Wellington, New South Wales |
| Enlistment date | 26 November 1917 |
| Rank on enlistment | Private |
| Unit name | New South Wales Reinforcement 1 |
| AWM Embarkation Roll number | 23/111/5 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board RMS Osterley on 8 May 1918 |
| Rank from Nominal Roll | Sapper |
| Unit from Nominal Roll | 13th Field Company Engineers |
| Fate | Returned to Australia 3 April 1919 |
