| Regimental number | 1486 |
| True Name | O'NEILL, James Dennis |
| Religion | Roman Catholic |
| Occupation | Drover |
| Address | PO, Collarenebri, New South Wales |
| Marital status | Single |
| Age at embarkation | 31.2 |
| Height | 5' 10" |
| Weight | 188 lbs |
| Next of kin | Brother, G J Nelson, PO, Collarenebri, New South Wales |
| Previous military service | Served for 6 years in 4th Infantry (Voluntary). |
| Enlistment date | |
| Place of enlistment | Liverpool, New South Wales |
| Rank on enlistment | Private |
| Unit name | 13th Battalion, 3rd Reinforcement |
| AWM Embarkation Roll number | 23/30/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A49 Seang Choon on |
| Regimental number from Nominal Roll | 1229A |
| Rank from Nominal Roll | Driver |
| Unit from Nominal Roll | 1st Divisional Train |
| Fate | Returned to Australia |
| Miscellaneous details (Nominal Roll) | Name does not appear on Nominal Roll |
| Discharge date | |
| Other details |
War service: Egypt, Gallipoli, Western Front Medals: 1914-15 Star, British War Medal, Victory Medal |