| Regimental number | 4539 |
| Place of birth | Batlow New South Wales |
| Religion | Church of England |
| Occupation | Letter carrier |
| Address | Batlow, via Gilmore, New South Wales |
| Marital status | Single |
| Age at embarkation | 24 |
| Next of kin | Mother, Mrs M Hartnett, Batlow, via Gilmore, New South Wales |
| Enlistment date | 9 August 1915 |
| Date of enlistment from Nominal Roll | 13 September 1915 |
| Rank on enlistment | Private |
| Unit name | 2nd Battalion, 14th Reinforcement |
| AWM Embarkation Roll number | 23/19/3 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board RMS Osterley on 15 January 1916 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 2nd Battalion |
| Fate | Returned to Australia 23 September 1918 |
| Family/military connections | Brother: Lt Walter Robert HARTNETT, 1st Light Horse Brigade Machine Gun Squadron, returned to Australia, 15 June 1919. |
