| Regimental number | 1177 |
| Place of birth | Tipperary, Ireland |
| Religion | Roman Catholic |
| Occupation | Labourer |
| Address | 42 Gerard Street, Neutral Bay North Sydney, New South Wales |
| Marital status | Single |
| Age at embarkation | 27 |
| Next of kin | Mother, Mrs M Cusack, 42 Gerard Street, Neutral Bay North Sydney, New South Wales |
| Enlistment date | |
| Place of enlistment | Liverpool, New South Wales |
| Rank on enlistment | Private |
| Unit name | 17th Battalion, D Company |
| AWM Embarkation Roll number | 23/34/1 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board Transport A32 Themistocles on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 4th Machine Gun Battalion |
| Fate | Returned to Australia |
| Family/military connections | Brother: 1792 Pte Patrick CUSACK, 35th Bn, killed in action, 9 June 1917. |
| Other details |
War service: Egypt, Gallipoli, Western Front Medals: 1914-15 Star, British War Medal, Victory Medal |
| Sources | NAA: B2455, CUSACK John |