| Regimental number | 3261 |
| Place of birth | Tamworth New South Wales |
| Religion | Presbyterian |
| Occupation | Labourer |
| Address | Goonoo Goonoo, Tamworth, New South Wales |
| Marital status | Single |
| Age at embarkation | 27 |
| Next of kin | Father, Martin Brennan, Goonoo Goonoo, Tamworth, New South Wales |
| Enlistment date | 28 February 1917 |
| Rank on enlistment | Private |
| Unit name | 35th Battalion, 8th Reinforcement |
| AWM Embarkation Roll number | 23/52/3 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A28 Miltiades on 2 August 1917 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 35th Battalion |
| Fate | Returned to Australia 23 September 1918 |