| Regimental number | 2578 |
| Place of birth | Sydney New South Wales |
| School | St Bede's (Catholic) School, Pyrmont, Sydney, New South Wales |
| Religion | Roman Catholic |
| Occupation | Ironworker |
| Address | 14 McCredie Street, Pyrmont, Sydney, New South Wales |
| Marital status | Single |
| Age at embarkation | 20 |
| Next of kin | Mother, MrsM Brennan, 14 McCredie, Pyrmont, Sydney, New South Wales |
| Previous military service | Served in the Compulsory Military Training scheme. |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 20th Battalion, 6th Reinforcement |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A14 Euripides on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 56th Battalion |
| Fate | Killed in Action |
| Place of death or wounding | France |
| Date of death | |
| Age at death | 21 |
| Age at death from cemetery records | 21 |
| Place of burial | "Y" Farm Military Cemetery (Row G, Grave No. 3), Bois-Grenier, France |
| Panel number, Roll of Honour, Australian War Memorial | 162 |
| Miscellaneous information from cemetery records | Parents: Michael and Mary BRENNAN. Native of Sydney, New South Wales. Cemetery Details surname also listed as Thomas Joseph DIXON |