| Regimental number | 1039 |
| Place of birth | Goulburn, New South Wales |
| Religion | Church of England |
| Occupation | Labourer |
| Address | 3 Avenue Road, Glebe Point, Sydney, New South Wales |
| Marital status | Widower |
| Age at embarkation | 39 |
| Next of kin | Brother, James A Warn, 3 Avenue Road, Glebe Point, Sydney, New South Wales |
| Enlistment date | 20 February 1915 |
| Place of enlistment | Brisbane, Queensland |
| Rank on enlistment | Private |
| Unit name | 17th Battalion, C Company |
| AWM Embarkation Roll number | 23/34/1 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A32 Themistocles on 12 May 1915 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 17th Battalion |
| Fate | Returned to Australia 1 October 1915 |
| Miscellaneous details | Alias: Richard LESLIE; see 464 Richard Leslie WARN for more details |