| Regimental number | 3592 |
| Place of birth | Melbourne Victoria |
| Religion | Methodist |
| Occupation | Farmer |
| Address | Coolup, Western Australia |
| Marital status | Single |
| Age at embarkation | 24 |
| Next of kin | Father, Joseph Moor McMahen, Coolup, Western Australia |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Rank on enlistment | Private |
| Unit name | 28th Battalion, 8th Reinforcement |
| AWM Embarkation Roll number | 23/45/2 |
| Embarkation details | Unit embarked from Fremantle, Western Australia, on board HMAT A30 Borda on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 51st Battalion |
| Fate | Died of disease |
| Age at death from cemetery records | 27 |
| Place of burial | Cologne Souther Cemetery (Plot XVI, Row b, Grave No. 41), Germany |
| Panel number, Roll of Honour, Australian War Memorial | 153 |
| Miscellaneous information from cemetery records | Parents: Joseph and Kate McMAHEN, Magner Farm, Coolup, Western Australia |
| Other details |
War service: Egypt, Western Front Medals: British War Medal, Victory Medal |