| Place of birth | Williamstown, Victoria |
| Religion | Church of England |
| Occupation | Dentist |
| Address | Williamstown, Victoria |
| Marital status | Single |
| Age at embarkation | 28 |
| Next of kin | Father, C E Down, 1 The Strand, Williamstown, Victoria |
| Previous military service | Australian Army Medical Corps Res |
| Enlistment date | |
| Rank on enlistment | LT (HON CAPT) |
| Unit name | Dental Details |
| AWM Embarkation Roll number | 26/105/1 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A30 Borda on |
| Rank from Nominal Roll | Captain |
| Unit from Nominal Roll | Australian Army Medical Corps |
| Fate | Returned to Australia |
| Family/military connections | Brother: 21733 Staff Sergeant Stanley Crompton DOWN, Australian Army Meidcal Corps Dental Company, returned to Australia, 19 June 1919. |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |