| Regimental number | 1225 |
| Religion | Roman Catholic |
| Occupation | Clerk |
| Address | Rockley Stewart Street, Manly, New South Wales |
| Marital status | Single |
| Age at embarkation | 27 |
| Next of kin | Father, Francis John McMahon, 13 James Street, Manly, Sydney, New South Wales |
| Enlistment date | 9 February 1915 |
| Date of enlistment from Nominal Roll | 10 February 1915 |
| Rank on enlistment | Acting Corporal |
| Unit name | 18th Battalion, D Company |
| AWM Embarkation Roll number | 23/35/1 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board Transport A40 Ceramic on 25 June 1915 |
| Rank from Nominal Roll | Company Quartermaster Sergeant |
| Unit from Nominal Roll | 18th Battalion |
| Fate | Returned to Australia 8 May 1919 |
