| Regimental number | 2141 |
| Place of birth | Orange New South Wales |
| Religion | Roman Catholic |
| Occupation | Labourer |
| Address | 11 Anson Street, Orange, New South Wales |
| Marital status | Single |
| Age at embarkation | 23 |
| Next of kin | Father, R Gahan, 11 Anson Street, Orange, New South Wales |
| Enlistment date | 6 July 1915 |
| Rank on enlistment | Private |
| Unit name | 17th Battalion, 4th Reinforcement |
| AWM Embarkation Roll number | 23/34/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A8 Argyllshire on 30 September 1915 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 17th Battalion |
| Fate | Returned to Australia 8 April 1917 |
| Miscellaneous details (Nominal Roll) | *Stated to be Robert Gahan on NR |