| Regimental number | 6531 |
| Place of birth | Copmanhurst New South Wales |
| Religion | Roman Catholic |
| Occupation | Farmer |
| Address | Harwood Island, New South Wales |
| Marital status | Single |
| Age at embarkation | 28 |
| Next of kin | Father, J D'Arcy, Harwood Island, Clarence River, New South Wales |
| Enlistment date | 19 January 1916 |
| Rank on enlistment | Private |
| Unit name | 26th Battalion, 19th Reinforcement |
| AWM Embarkation Roll number | 23/43/5 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A18 Wiltshire on 7 February 1917 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | Australian Army Veterinary Hospital |
| Fate | Returned to Australia 19 April 1919 |
| Miscellaneous details (Nominal Roll) | *Spelt James Patrick Darcy on NR |