| Regimental number | 2606 |
| Place of birth | Camden New South Wales |
| Religion | Roman Catholic |
| Occupation | Farmer |
| Address | Cox's River via Picton, New South Wales |
| Marital status | Single |
| Age at embarkation | 38 |
| Next of kin | Mother, Mrs Catherine McMahon, Cox's River via Picton, New South Wales |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 39th Battalion, 5th Reinforcement |
| AWM Embarkation Roll number | 23/56/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A24 Benalla on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 39th Battalion |
| Fate | Returned to Australia |
| Miscellaneous information from cemetery records | Plaque in New South Wales Garden of Remembrance |
| Family/military connections | Brother: 1720 Bombardier Reginald McMAHON, 5th Divisional Ammunition Column, 20 November 1918. |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |
| Date of death |
Postal Address:
Po Box 7916
Canberra BC 2610, Australia
Street Address:
Northcott Drive,
Campbell, ACT 2600
