| Regimental number | 220 |
| Place of birth | Fairfield New South Wales |
| Religion | Roman Catholic |
| Occupation | Horse breaker |
| Address | Silverspur via Inglewood, Queensland |
| Marital status | Single |
| Age at embarkation | 22 |
| Next of kin | Mother, Mrs N J Gannon, Tingha PO, Tingha, New South Wales |
| Enlistment date | 17 October 1914 |
| Date of enlistment from Nominal Roll | 20 October 1918 |
| Rank on enlistment | Private |
| Unit name | 5th Light Horse Regiment, B Squadron |
| AWM Embarkation Roll number | 10/10/1 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A34 Persic on 14 September 1918 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 5th Light Horse Regiment |
| Fate | Returned to Australia 18 October 1918 |
| Family/military connections | Brother: 219 Pte Herbert GANNON, Anzac Provost Corps, returned to Australia, 1 November 1917. |
