| Religion | Presbyterian |
| Occupation | Police magistrate |
| Address | Commercial Bank Crows Nest Branch, Crows Nest, New South Wales |
| Marital status | Single |
| Age at embarkation | 46 |
| Next of kin | Brother, George Arthur Chapman, Chapmans Avenue, Chatswood, New South Wales |
| Enlistment date | 29 March 1915 |
| Rank on enlistment | Lieutenant-Colonel |
| Unit name | 18th Battalion, Headquarters |
| AWM Embarkation Roll number | 23/35/1 |
| Embarkation details | Unit embarked from s, New South Wales, on board TRANSPORT A40 Ceramic on 25 June 1915 |
| Rank from Nominal Roll | Lieutenant-Colonel |
| Unit from Nominal Roll | 18th Battalion |
| Fate | Returned to Australia 15 November 1915 |