| Regimental number | 3915 |
| Place of birth | Oatlands, Tasmania |
| Religion | Church of England |
| Occupation | Farmer |
| Address | Elsie Creek, Claremont, Tasmania |
| Marital status | Single |
| Age at embarkation | 19 |
| Next of kin | Father, W Barwick, Elsie Creek, Claremont, Tasmania |
| Enlistment date | 13 August 1915 |
| Date of enlistment from Nominal Roll | 23 August 1915 |
| Rank on enlistment | Private |
| Unit name | 12th Battalion, 12th Reinforcement |
| AWM Embarkation Roll number | 23/29/3 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT RMS Orontes on 24 November 1915 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 12th Battalion |
| Fate | Returned to Australia 11 December 1918 |
| Family/military connections | Brother: 3929 Driver Robert John Ernest BARWICK, 11th Field Artillery Brigade, returned to Australia, 3 July 1919. |