| Regimental number | 889 |
| Place of birth | Adelaide South Australia |
| Religion | Church of England |
| Occupation | Dentist mechanic |
| Address | 9 Affleck Street, South Yarra, Victoria |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Father, Denis McMahon, 9 Affleck Street, South Yarra, Victoria |
| Enlistment date | 16 September 1914 |
| Rank on enlistment | Private |
| Unit name | 3rd Light Horse Field Ambulance |
| AWM Embarkation Roll number | 26/41/1 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A51 Chilka on 2 February 1915 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 3rd Australian General Hospital |
| Fate | Returned to Australia 9 February 1919 |
