| Regimental number | 56 |
| Place of birth | Eidsvold Queensland |
| Religion | Church of England |
| Occupation | Orchardist |
| Address | Nyah, Victoria |
| Marital status | Single |
| Age at embarkation | 22 |
| Next of kin | Father, Thomas Byrnes, Nyah, Victoria |
| Enlistment date | |
| Rank on enlistment | Driver |
| Unit name | 3rd Pioneer Battalion, Headquarters |
| AWM Embarkation Roll number | 14/15/1 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A62 Wandilla on |
| Rank from Nominal Roll | Driver |
| Unit from Nominal Roll | 3rd Pioneer Battalion |
| Fate | Returned to Australia |
| Miscellaneous information from cemetery records | Photo: Kent Fedorowich. Plaque in Victorian Garden of Remembrance. |
| Family/military connections | Brother: 1056 Corporal Leslie Garrett BYRNES, 2nd Machine Gun Bn, returned to Australia, 16 June 1919. |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |
| Date of death | |
| Age at death | 80 |
| Place of burial | Swan Hill Cemetery, Victoria |
