| Regimental number | 16660 |
| Place of birth | Sydney New South Wales |
| Religion | Roman Catholic |
| Occupation | Plumber |
| Address | Clonvitte Road, Roseville, Sydney, New South Wales |
| Marital status | Single |
| Age at embarkation | 23 |
| Next of kin | Father, William Henry Hahn, Clonvitte Road, Roseville, Sydney, New South Wales |
| Enlistment date | 16 October 1916 |
| Rank on enlistment | Driver |
| Unit name | December 1916 Reinforcements |
| AWM Embarkation Roll number | 14/42/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A67 Orsova on 2 December 1916 |
| Rank from Nominal Roll | Driver |
| Unit from Nominal Roll | 13th Field Company Engineers |
| Fate | Returned to Australia 6 September 1919 |
| Miscellaneous details (Nominal Roll) | *Given name Joseph Frederick |
