| Regimental number | 7785 |
| Place of birth | Brisbane Queensland |
| Religion | Roman Catholic |
| Occupation | Fireman |
| Address | Rosalie, Queensland |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Father, M O'Donnell, Fernberg Road, Rosalie, Queensland |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 15th Battalion, 26th Reinforcement |
| AWM Embarkation Roll number | 23/32/3 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A14 Euripides on |
| Rank from Nominal Roll | Driver |
| Unit from Nominal Roll | 15th Battalion |
| Fate | Returned to Australia |
| Family/military connections | Brother: 7725 Pte James O'DONNELL, 15th Bn, returned to Australia, 9 December 1918. |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |