| Regimental number | 7124 |
| Place of birth | Sydney New South Wales |
| Religion | Salvation Army |
| Occupation | Miner |
| Address | Kalgoorlie, Western Australia |
| Marital status | Single |
| Age at embarkation | 36 |
| Next of kin | Sister, Mrs M Post, 717 Robert Street, Kalgoorlie, Western Australia |
| Enlistment date | |
| Rank on enlistment | Sapper |
| Unit name | Tunnelling Companies Sept 1916 to Feb 1918 Reinforcements |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A9 Shropshire on |
| Rank from Nominal Roll | Sapper |
| Unit from Nominal Roll | 2nd Tunnelling Company |
| Fate | Died of wounds |
| Age at death from cemetery records | 37 |
| Place of burial | Brookwood Military Cemetery (Plot IV, Row E, Grave No. 18), Surrey, England |
| Panel number, Roll of Honour, Australian War Memorial | 27 |
| Miscellaneous information from cemetery records | Parents: Joseph and Eliza MCMAHON. Native of Appin, New South Wales |