| Regimental number | 5589 |
| Place of birth | Ivanhoe New South Wales |
| Religion | Presbyterian |
| Occupation | Engineer |
| Address | 92 Park Street, St Kilda, Victoria |
| Marital status | Single |
| Age at embarkation | 18 |
| Next of kin | Mother, Mrs D Leaper, Park Street, St Kilda, Victoria |
| Previous military service | 21st Battery Australian Field Artillery |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Rank on enlistment | Gunner |
| Unit name | Field Artillery Brigade 2, Reinforcement 11 |
| AWM Embarkation Roll number | 13/30/2 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A71 Nestor on |
| Rank from Nominal Roll | Gunner |
| Unit from Nominal Roll | 6th Field Artillery Brigade |
| Recommendations (Medals and Awards) |
Mention in Despatches Second MID recommendation dated 27 January 1919. One MID awarded, and promulgated, 'London Gazette' No. 31448, 11 July 1919; 'Commonwealth Gazette' No. 124, 30 October 1919. Recommendation date: |
| Fate | Returned to Australia |
| Family/military connections | Brother: Captain Thomas Duncan LEAPER, 6th Army Field Artillery Brigade, returned to Australia 15 April 1918 |
| Other details |
Medals: 1914-15 Star, British War Medal, Victory Medal |