| Regimental number | 11578 |
| Place of birth | Ballina, Richmond River, New South Wales |
| School | Public School |
| Religion | Presbyterian |
| Occupation | Customs assistant |
| Address | 92 Elizabeth Street, Ashfield, New South Wales |
| Marital status | Single |
| Age at embarkation | 22 |
| Next of kin | Father, M D Harmston, 92 Elizabeth Street, Ashfield, New South Wales |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Rank on enlistment | Gunner |
| Unit name | Divisional Ammunition Column 2, Reinforcement 3 |
| AWM Embarkation Roll number | 25/90/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT RMS Osterley on |
| Rank from Nominal Roll | Gunner |
| Unit from Nominal Roll | 22nd Field Artillery Brigade |
| Fate | Killed in Action |
| Age at death from cemetery records | 26 |
| Place of burial | Guards' Cemetery (Plot VII, Row A, Grave No. 2), Lesboeufs, France |
| Panel number, Roll of Honour, Australian War Memorial | 19 |
| Miscellaneous information from cemetery records | Parents: Maurice and Mary HARMSTON, 75 Norton Street, Ashfield, New South Wales. Native of Ballina, New South Wales |