| Place of birth | Belfast, Ireland |
| Religion | Baptist |
| Occupation | Clerk |
| Address | 48 Frederick Street, Maylands, South Australia |
| Marital status | Single |
| Age at embarkation | 23 |
| Next of kin | Father, J McMaster, 48 Frederick Street, Maylands, South Australia |
| Enlistment date | 19 July 1915 |
| Date of enlistment from Nominal Roll | 19 July 1915 |
| Place of enlistment | Adelaide, South Australia |
| Rank on enlistment | Private |
| Unit name | 16th Battalion, 10th Reinforcement |
| AWM Embarkation Roll number | 23/33/3 |
| Embarkation details | Unit embarked from Adelaide, South Australia, on board HMAT A70 Ballarat on 14 September 1915 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 16th Battalion |
| Fate | Returned to Australia 1 February 1918 |
| Sources | NAA: B2455, McMASTER Samuel Crawford |
