| Regimental number | 23774 |
| Occupation | Accountant |
| Next of kin | Father, H F Allen, c/o H F Allen and Sons, Public Accountants, Wellington |
| Rank on embarkation | Private |
| Unit name | New Zealand Expeditionary Force, 13th Reinforcements, Wellington Infantry Battalion, B Company |
| Embarkation details | Unit embarked from Wellington on |
| Final rank | Private |
| Final unit | Ruahine Company, 2nd Battalion, Wellington Infantry Regiment |
| Fate | Killed in Action |
| Age at death from cemetery records | 30 |
| Place of burial | No known grave |
| Commemoration details | Caterpillar Valley (New Zealand) Memorial, Longueval, France |
| Miscellaneous information from cemetery records | Parents: Henry Frederick and Ada Mary Allen, 31 Matai Road, Hataitai, Wellington |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |
| Sources | Nominal Roll Vol. 2: Roll 33, p. 8 |