| Regimental number | 903 |
| Date of birth | |
| Place of birth | Preston, Victoria |
| Religion | Methodist |
| Occupation | Labourer |
| Address | Khedive Street, Wagin, Western Australia |
| Marital status | Widower |
| Age at embarkation | 29 |
| Height | 5' 7" |
| Weight | 154 lbs |
| Next of kin | Mother, Mrs E J Gannaway, Khedive Street, Wagin, Western Australia |
| Previous military service | Nil |
| Enlistment date | |
| Place of enlistment | Blackboy Hill, Western Australia |
| Rank on enlistment | Private |
| Unit name | 11th Battalion, H Company |
| AWM Embarkation Roll number | 23/28/1 |
| Embarkation details | Unit embarked from Fremantle, Western Australia, on board Transport A11 Ascanius on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 11th Battalion |
| Fate | Died of disease |
| Place of burial | Berlin South-Western Cemetery (Plot V, Row C, Grave No. 7), Stahnsdorf, Germany |
| Panel number, Roll of Honour, Australian War Memorial | 62 |
| Family/military connections | Brothers: 526 Pte Alexander GANNAWAY, 10th Light Horse Regiment, died of wounds, 25 September 1915; 17447 Pte Henry GANNAWAY, 1st Field Ambulance, returned to Australia, 1 June 1919. |
| Other details |
War service: Egypt, Gallipoli, Western Front Medals: 1914-15 Star, British War Medal, Victory Medal |
| Sources | NAA: B2455, GANNAWAY Benjamin Joseph |