| Regimental number | 612 |
| Place of birth | Truro, England |
| Religion | Church of England |
| Occupation | Miner |
| Address | Royal Oak Hotel, Adelaide, South Australia |
| Marital status | Single |
| Age at embarkation | 25 |
| Height | 5' 8" |
| Weight | 161 lbs |
| Next of kin | Father, G Allen, Trenwick Road, Truro, Cornwall, England |
| Previous military service | Nil |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Place of enlistment | Adelaide, South Australia |
| Rank on enlistment | Driver |
| Unit name | 10th Battalion, B Company |
| AWM Embarkation Roll number | 23/27/1 |
| Embarkation details | Unit embarked from Adelaide, South Australia, on board Transport A11 Ascanius on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 10th Battalion |
| Fate | Returned to Australia |
| Miscellaneous details (Nominal Roll) | Driver John Allen sailed on a different ship to the rest of B Company. He boarded the Transport A12, "Saldanha" |
| Discharge date | |
| Other details |
War service: Egypt, Gallipoli, Western Front Medals: 1914-15 Star, British War Medal, Victory Medal |