| Regimental number | 5796 |
| Place of birth | Geelong, Victoria |
| Religion | Roman Catholic |
| Occupation | Labourer |
| Address | 39 Princess Street, Port Melbourne, Victoria |
| Marital status | Married |
| Age at embarkation | 27 |
| Next of kin | Wife, Mrs Beatrice Brennan, 93 Nott Street, Port Melbourne, Victoria |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Rank on enlistment | Private |
| Unit name | 21st Battalion, 16th Reinforcement |
| AWM Embarkation Roll number | 23/38/3 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A71 Nestor on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 21st Battalion |
| Fate | Returned to Australia |
| Family/military connections | Brother: 1885A Pte William Charles BRENNAN, 21st Bn, killed in action, 3 May 1917. |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |