| Regimental number | 3711 |
| Place of birth | Sydney New South Wales |
| Religion | Church of England |
| Occupation | Jockey |
| Marital status | Single |
| Age at embarkation | 22 |
| Next of kin | Father, C E Clack, 'Bonette', James Street |
| Enlistment date | |
| Rank on enlistment | Private |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 13th Battalion |
| Fate | Died of disease |
| Age at death from cemetery records | 25 |
| Place of burial | Brookwood Military Cemetery (Plot IV, Row H, Grave No. 3), Surrey, England. |
| Panel number, Roll of Honour, Australian War Memorial | 68 |
| Miscellaneous information from cemetery records | Parents: Charles Ernest and Mary Ann CLACK, "Wyoming", Pennant Hills Road, Parramatta North, New South Wales. Native of Paddington, Sydney |