| Regimental number | 1911 |
| Place of birth | Dumfries Scotland |
| Religion | Roman Catholic |
| Occupation | Farmhand |
| Address | Carlton, Victoria |
| Marital status | Single |
| Age at embarkation | 18 |
| Next of kin | Father, John Firth, Victoria Barracks, Melbourne, Victoria |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Rank on enlistment | Private |
| Unit name | 46th Battalion, 3rd Reinforcement |
| AWM Embarkation Roll number | 23/63/3 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A7 Medic on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 46th Battalion |
| Fate | Returned to Australia |
| Miscellaneous information from cemetery records | Plaque in Western Australia Garden of Remembrance |
| Family/military connections | Brother: 1912 Pte Frederick John FIRTH, 46th Bn, killed in action, 14 February 1917. |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |
| Date of death |