| Regimental number | 6114 |
| Place of birth | Matong, New South Wales |
| Religion | Roman Catholic |
| Occupation | Farmer |
| Address | Lingerwood, Matong, New South Wales |
| Marital status | Single |
| Age at embarkation | 24 |
| Height | 5' 5.5" |
| Weight | 140 lbs |
| Next of kin | Father, William Patrick Slattery, Lingerwood, Matong, New South Wales |
| Previous military service | Nil |
| Enlistment date | |
| Place of enlistment | Cootamundra, New South Wales |
| Rank on enlistment | Private |
| Unit name | 23rd Battalion, 17th Reinforcement |
| AWM Embarkation Roll number | 23/40/4 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A8 Argyllshire on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 23rd Battalion |
| Fate | Returned to Australia |
| Discharge date | |
| Other details |
War service: Western Front Commenced return to Australia on board HT 'Nestor', 1 November 1919; disembarked Melbourne, 15 December 1919; discharged (termination of period of enlistment), Sydney, 30 January 1920. Medals: British War Medal, Victory Medal |
| Miscellaneous details | Father's second given name incorrectly entered on Embarkation Roll as Penrick. |
| Sources | NAA: B2455, SLATTERY William John |