| Regimental number | 12403 |
| Other Names | Leon Rossiter |
| Religion | Church of England |
| Occupation | Chemist |
| Address | 'Muirton', Gratton Street, Hawthorn, Victoria |
| Marital status | Single |
| Age at embarkation | 25 |
| Next of kin | Mother, Mrs Annie Stahle, 'Muirton', Gratton Street, Hawthorn, Victoria |
| Enlistment date | 23 April 1915 |
| Date of enlistment from Nominal Roll | 25 April 1915 |
| Rank on enlistment | Staff Sergeant |
| Unit name | Field Ambulance 10 |
| AWM Embarkation Roll number | 26/53/1 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A54 Runic on 20 June 1916 |
| Regimental number from Nominal Roll | Comissioned |
| Rank from Nominal Roll | Lieutenant |
| Unit from Nominal Roll | 34th Battalion |
| Fate | Returned to Australia 8 August 1919 |