| Regimental number | 280 |
| Place of birth | Melbourne, Victoria |
| Other Names | John Eustace |
| Religion | Church of England |
| Occupation | Diamond setter |
| Address | 'Marathon', 20 Robe Street, St Kilda, Victoria |
| Marital status | Married |
| Age at embarkation | 38 |
| Next of kin | Wife, Mrs Laurie M Chalmers, 'Marathon', 20 Robe Street, St Kilda, Victoria |
| Enlistment date | |
| Rank on enlistment | 1st Class Air Mechanic |
| Unit name | Australian Flying Corps, No 1 Squadron, C Flight |
| AWM Embarkation Roll number | 8/4/1 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A67 Orsova on |
| Rank from Nominal Roll | Sergeant |
| Unit from Nominal Roll | Australian Flying Corps |
| Recommendations (Medals and Awards) |
Mention in Despatches Awarded, and promulgated, 'London Gazette' No. 30746 (14 June 1918); 'Commonwealth Gazette' No. 173 (7 November 1918). |
| Fate | Returned to Australia |
| Medals |
Meritorious Service Medal Source: 'Commonwealth Gazette' No. 33 Date: |