| Regimental number | 4 |
| Place of birth | Edithburgh, South Australia |
| Religion | Church of England |
| Occupation | Veterinary surgeon |
| Address | Kalgoorlie, Western Australia |
| Marital status | Single |
| Age at embarkation | 35 |
| Height | 5' 9" |
| Weight | 143 lbs |
| Next of kin | Father, F W Allen, Edithburgh, South Australia |
| Previous military service | Served for 4 years in |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Place of enlistment | Kalgoorlie, Western Australia |
| Rank on enlistment | Driver |
| Unit name | 28th Battalion, A Company |
| AWM Embarkation Roll number | 23/45/1 |
| Embarkation details | Unit embarked from Fremantle, Western Australia, |
| 30 Officers and 982 Other Ranks embarked at Fremantle on HMAT A11 'Ascanius' on 29 June 1915; 12 others embarked at Fremantle on HMAT A36 'Thirty-Six' on 12 July 1916. From Embarkation Records it is not possible to distinguish the latter 12. | |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 28th Battalion |
| Fate | Died of disease |
| Age at death | 39 |
| Place of burial | Abbeville Communal Cemetery Extension (Plot IV, Row A, Grave 5), France |
| Panel number, Roll of Honour, Australian War Memorial | 112 |
| Miscellaneous information from cemetery records | Parents: Frederick William and Janet ALLEN |
| Other details |
War service: Egypt, Gallipoli, Western Front Medals: 1914-15 Star, British War Medal, Victory Medal |
| Date of death | |
| Sources | NAA: B2455, ALLEN Pentland |