| Regimental number | 3467 |
| Place of birth | Amherst Victoria |
| School | Amherst State School No 1459, Victoria |
| Religion | Church of England |
| Occupation | Labourer |
| Address | Amherst PO, Amherst, Victoria |
| Marital status | Single |
| Age at embarkation | 22 |
| Next of kin | Father, James E Cosstick, Amherst PO, Amherst, Victoria |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 24th Battalion, 8th Reinforcement |
| AWM Embarkation Roll number | 23/41/2 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A19 Afric on |
| Rank from Nominal Roll | Bombardier |
| Unit from Nominal Roll | 6th Field Artillery Brigade |
| Fate | Returned to Australia |
| Miscellaneous information from cemetery records | Listed on Amherst State School No 1459 Roll of Honor, Victoria. |
| Family/military connections | Brother: 835 Pte Edward Roy COSSTICK, 6th Field Artillery Brigade, returned to Australia, 13 April 1919. |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |