| Regimental number | 4861 |
| Place of birth | Geelong, Victoria |
| Other Names | AUSTIN, John Percy |
| Religion | Church of England |
| Occupation | Horticulturist |
| Address | 68 Caroline Street, South Yarra, Melbourne, Victoria |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Father, W E Austin, 68 Caroline Street, South Yarra, Melbourne, Victoria |
| Enlistment date | 24 July 1915 |
| Date of enlistment from Nominal Roll | 17 July 1915 |
| Rank on enlistment | Gunner |
| Unit name | Field Artillery Brigade 2, Reinforcement 8 |
| AWM Embarkation Roll number | 13/30/2 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT SS Makarini on 15 September 1915 |
| Rank from Nominal Roll | Lieutenant |
| Unit from Nominal Roll | 1st Division Artillery |
| Fate | Returned to Australia 31 May 1919 |