| Regimental number | 2577 |
| Place of birth | Adelaide, South Australia |
| Religion | Roman Catholic |
| Occupation | Mason |
| Address | Aldgate, South Australia |
| Marital status | Single |
| Age at embarkation | 32 |
| Next of kin | Mother, Mrs Catherine Ahern, Aldgate, South Australia |
| Enlistment date | 2 August 1915 |
| Date of enlistment from Nominal Roll | 28 July 1915 |
| Place of enlistment | Adelaide, South Australia |
| Rank on enlistment | Private |
| Unit name | 27th Battalion, 6th Reinforcement |
| AWM Embarkation Roll number | 23/44/2 |
| Embarkation details | Unit embarked from Adelaide, South Australia, on board HMAT A24 Benalla on 27 October 1915 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 10th Battalion |
| Fate | Returned to Australia 12 April 1919 |
| Family/military connections | Brother: 2576 Pte James Phillip AHERN, 10th Bn, killed in action, 11 August 1918. |