| Regimental number | 2752 |
| Place of birth | Coonamble New South Wales |
| Religion | Roman Catholic |
| Occupation | Labourer |
| Address | Coonamble, New South Wales |
| Marital status | Single |
| Age at embarkation | 29 |
| Next of kin | Mother, Mrs T McMahon, Coonamble, New South Wales |
| Enlistment date | 6 August 1915 |
| Date of enlistment from Nominal Roll | 5 August 1915 |
| Rank on enlistment | Private |
| Unit name | 20th Battalion, 6th Reinforcement |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A14 Euripides on 2 November 1915 |
| Rank from Nominal Roll | 2nd Corporal |
| Unit from Nominal Roll | ANZ Police, Egypt |
| Fate | Returned to Australia 3 July 1919 |
| Family/military connections | Brother: 1703 Pte Joseph McMAHON. 56th Bn, returned to Australia, 16 July 1917. |
| Date of death | 29 June 1937 |
