| Regimental number | 452 |
| Place of birth | Ipswich Queensland |
| Religion | Roman Catholic |
| Occupation | Clerk |
| Address | Lincoln Street, Stanmore, Sydney, New South Wales |
| Marital status | Single |
| Age at embarkation | 22 |
| Next of kin | Honora Gannon, Lincoln Street, Stanmore, New South Wales |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 1st Battalion, D Company |
| AWM Embarkation Roll number | 23/18/1 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board Transport A19 Afric on |
| Rank from Nominal Roll | Sergeant |
| Unit from Nominal Roll | 1st Battalion |
| Fate | Returned to Australia |
| Family/military connections | Brother: 690 Pte William James GANNON, 2nd Field Ambulance, died of wounds, 5 May 1917. |
| Other details |
War service: Egypt, Gallipoli, Western Front Medals: 1914-15 Star, British War Medal, Victory Medal |