
| Regimental number | 6405 |
| Place of birth | Sydney, New South Wales |
| Religion | Roman Catholic |
| Occupation | Wood turner |
| Address | Leichhardt, New South Wales |
| Marital status | Married |
| Age at embarkation | 43.6 |
| Height | 5' 3.5" |
| Weight | 124 lbs |
| Next of kin | Wife, Mrs E Byrnes, 14 Jarrett Street, Leichhardt, New South Wales |
| Previous military service | Nil |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 19th Battalion, 18th Reinforcement |
| AWM Embarkation Roll number | 23/36/4 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board A29 Suevic on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 9th Battalion |
| Fate | Returned to Australia |
| Miscellaneous information from cemetery records | Photo: Robert and Sandra Crofts |
| Discharge date | |
| Other details |
War service: Western Front Commenced return to Australia on board HT 'Durham Castle', 10 March 1918; discharged (medically unfit: age and nephritis), Sydney, 24 July 1918. Medals: British War Medal, Victory Medal |
| Date of death | |
| Age at death | 62 |
| Place of burial | Rookwood Necropolis (R.C. Sec. 10, 1931), Sydney, New South Wales |
| Sources | NAA: B2455, BYRNES John Joseph |