| Regimental number | 968 |
| Place of birth | Lithgow New South Wales |
| Religion | Church of England |
| Occupation | Hospital porter |
| Address | 167 Albany Road, Stanmore, New South Wales |
| Marital status | Single |
| Age at embarkation | 19 |
| Next of kin | Father, F Flack, 33 Westbowen Street, Petersham, New South Wales |
| Previous military service | 9th ASC |
| Enlistment date | |
| Rank on enlistment | Lance Corporal |
| Unit name | 2nd Light Horse Brigade Train |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A39 Port Macquarie on |
| Regimental number from Nominal Roll | Commissioned |
| Rank from Nominal Roll | 2nd Lieutenant |
| Fate | Returned to Australia |
| Miscellaneous details (Nominal Roll) | No unit entered on Nominal Roll. |
| Miscellaneous information from cemetery records | Plaque in New South Wales Garden of Remembrance |
| Family/military connections | Brother: 2800 Pte John William FLACK, 35th Bn, returned to Australia, 11 May 1919. |
| Other details |
Medals: 1914-15 Star, British War Medal, Victory Medal |
| Date of death |