| Regimental number | 185 |
| Place of birth | Beaconsfield, Tasmania |
| Other Names | ALLAN, David Henry |
| School | Beaconsfield State School, Tasmania |
| Religion | Church of England |
| Occupation | Miner |
| Address | Hospital Road, Beaconsfield, Tasmania |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Father, J Allen, Beaconsfield, Tasmania |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 12th Battalion, B Company |
| AWM Embarkation Roll number | 23/29/1 |
| Embarkation details | Unit embarked from Hobart, Tasmania, on board Transport A2 Geelong on |
| Rank from Nominal Roll | Sergeant |
| Unit from Nominal Roll | 52nd Battalion |
| Fate | Killed in Action |
| Place of death or wounding | Villers-Bretonneux, France |
| Age at death | 24.11 |
| Place of burial | Adelaide Cemetery, Villers-Bretonneux, France |
| Panel number, Roll of Honour, Australian War Memorial | 154 |
| Other details |
War service: Egypt, Gallipoli, Western Front Medals: 1914-15 Star, British War Medal, Victory Medal |