
| Regimental number | 10590 |
| Place of birth | Richmond, Victoria |
| Religion | Roman Catholic |
| Occupation | Postal assistant |
| Address | Merino, Victoria |
| Marital status | Single |
| Age at embarkation | 19 |
| Next of kin | Father, James Byrnes, Police Station, Merino, Victoria |
| Enlistment date | |
| Rank on enlistment | Sapper |
| Unit name | Divisional Signal Company 3 |
| AWM Embarkation Roll number | 22/13/2 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A11 Ascanius on |
| Rank from Nominal Roll | Sapper |
| Unit from Nominal Roll | 3rd Divisional Signal Company |
| Fate | Returned to Australia |
| Family/military connections | Brother: 68772 Pte Roy Patrick BYRNES, 15th General (Victorian) Reinforcements, embarked, 22 October 1918; ship recalled owing to cessation of hostilities. |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |