| Regimental number | 4738 |
| Place of birth | Devonport, Tasmania |
| Religion | Methodist |
| Occupation | Miner |
| Address | Derby, Tasmania |
| Marital status | Married |
| Age at embarkation | 40 |
| Height | 5' 7.5" |
| Weight | 140 lbs |
| Next of kin | Wife, Mrs M. Allen, Derby PO, Derby, North East Coast, Tasmania |
| Previous military service | Nil |
| Enlistment date | |
| Place of enlistment | Claremont, Tasmania |
| Rank on enlistment | Sapper |
| Unit name | No 4 Tunnelling Company and 1st Reinforcements (May 1916) |
| AWM Embarkation Roll number | 16/13/1 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A69 Warilda on |
| Rank from Nominal Roll | Sapper |
| Unit from Nominal Roll | 5th Tunnelling Company |
| Fate | Returned to Australia |
| Place of burial | Branxholm Cemetery, Tasmania, Australia. |
| Panel number, Roll of Honour, Australian War Memorial | 26 |
| Discharge date | |
| Other details |
War service: England. Embarked Melbourne, 25 May 1916; disembarked Plymouth, England, 18 July 1916. Marched into No 2 Command Depot, Weymouth, 16 August 1916. Commenced return to Australia from Southampton on board HT 'Kanowna', 9 September 1916; disembarked Hobart, 28 October 1916; discharged Hobart (medically unfit: tuberculosis both lungs), 10 May 1917. Medal: British War Medal. Death attributed to war service. |
| Date of death | |
| Age at death | 42 |
| Place of burial | Launceston Cemetery, Tasmania |
| Sources | NAA: B2455, ALLEN Leonard Oliver |