| Regimental number | 35651 |
| Religion | Roman Catholic |
| Occupation | Dental surgeon |
| Address | Montague Street, Goulburn, New South Wales |
| Marital status | Single |
| Age at embarkation | 32 |
| Next of kin | Brother, John D O'Halloran, Montague Street, Goulburn, New South Wales |
| Enlistment date | 13 October 1916 |
| Rank on enlistment | Gunner |
| Unit name | Field Artillery Brigade, May 1917 Reinforcements |
| AWM Embarkation Roll number | 13/128/1 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A28 Miltiades on 2 August 1917 |
| Rank from Nominal Roll | Quartermaster Sergeant |
| Unit from Nominal Roll | 5th Field Artillery Brigade |
| Fate | Returned to Australia 13 July 1919 |
