| Regimental number | 2 |
| Place of birth | Sydney, New South Wales |
| Religion | Church of England |
| Occupation | Locomotive driver |
| Address | Hornsby, New South Wales |
| Marital status | Married |
| Age at embarkation | 38 |
| Height | 5' 5" |
| Weight | 118 lbs |
| Next of kin | Wife, Mrs Maud Eva Allen, 'Glenrowan', Hunter Street, Hornsby, New South Wales |
| Previous military service | Nil |
| Enlistment date | |
| Place of enlistment | Sydney, New South Wales |
| Rank on enlistment | Corporal |
| Unit name | Section 1 |
| AWM Embarkation Roll number | 15/9/1 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A18 Wiltshire on |
| Rank from Nominal Roll | Corporal |
| Unit from Nominal Roll | 60th Light Railway |
| Fate | Returned to Australia |
| Miscellaneous information from cemetery records | Parents: William and Blanche ALLEN; Wife: Maud Eva ALLEN |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |
| Date of death | |
| Age at death | 61 |
| Place of burial | Northern Suburbs Cemetery, Sydney, New South Wales |
| Sources | NAA: B2455, ALLEN Thomas Alfred |