| Regimental number | 1249 |
| Place of birth | Beaconsfield, Tasmania |
| Religion | Methodist |
| Occupation | Grocer's assistant |
| Address | Beaconfield, Victoria |
| Marital status | Single |
| Age at embarkation | 21.9 |
| Height | 5' 10" |
| Weight | 126 lbs |
| Next of kin | Father, John Tregaskis, Beaconfield, Victoria |
| Previous military service | Nil |
| Enlistment date | |
| Place of enlistment | Melbourne, Victoria |
| Rank on enlistment | Private |
| Unit name | 29th Battalion, D Company |
| AWM Embarkation Roll number | 23/46/1 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A11 Ascanius on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 5th Battalion |
| Fate | Returned to Australia |
| Other details |
War service: Egypt, Western Front Commenced return to Australia on board HT 'City of Poona', 28 March 1919; disembarked Melbourne, 14 May 1919; discharged (termination of period of enlistment), Melbourne, 6 July 1919. Medals: 1914-15 Star, British War Medal, Victory Medal |
| Miscellaneous details | Surname entered incorrectly on Embarkation Roll as TREGASKIES. |
| Sources | NAA: B2455, TREGASKIS John |