| Regimental number | 3216 |
| Religion | Church of England |
| Occupation | Wood moulder |
| Address | 103 Glebe Street, Glebe, New South Wales |
| Marital status | Single |
| Age at embarkation | 20 |
| Next of kin | Mother, Mrs M O'Hallaran, 103 Glebe Street, Glebe, New South Wales |
| Enlistment date | 14 August 1915 |
| Rank on enlistment | Private |
| Unit name | 20th Battalion, 7th Reinforcement |
| AWM Embarkation Roll number | 23/37/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A29 Suevic on 20 December 1915 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 56th Battalion |
| Fate | Returned to Australia 19 April 1919 |
| Miscellaneous details (Nominal Roll) | *Spelt Leslie Victor O'Halloran on NR |