| Regimental number | 58 |
| Date of birth | 22 October 1892 |
| Place of birth | Leichhardt, New South Wales |
| Other Names | BYRNE, Darcy James |
| School | Stanmore Public School, New South Wales |
| Religion | Roman Catholic |
| Occupation | Porter |
| Address | Croydon, New South Wales |
| Marital status | Single |
| Age at embarkation | 22 |
| Next of kin | Father, Hugh Byrne, 46 Croydon Road, Croydon, New South Wales |
| Enlistment date | 24 July 1915 |
| Date of enlistment from Nominal Roll | 26 July 1915 |
| Rank on enlistment | Sapper |
| Unit name | Mining Corps 1, Company 1 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A38 Ulysses on 20 February 1916 |
| Rank from Nominal Roll | Sapper |
| Unit from Nominal Roll | 1st Tunnelling Company |
| Fate | Returned to Australia 31 May 1919 |
| Date of death | 17 October 1944 |
| Place of burial | Rookwood Necropolis, Sydney, New South Wales |