| Regimental number | 5156 |
| Place of birth | Surat, Queensland |
| Religion | Roman Catholic |
| Occupation | Engine cleaner |
| Address | McDowell Street, Roma, Queensland |
| Marital status | Single |
| Age at embarkation | 20 |
| Height | 5' 6.5" |
| Weight | 126 lbs |
| Next of kin | Father, Martin Sparks, McDowell Street, Roma, Queensland |
| Previous military service | T/A 11 B |
| Enlistment date | |
| Place of enlistment | Roma, Queensland |
| Rank on enlistment | Private |
| Unit name | 26th Battalion, 17th Reinforcement |
| AWM Embarkation Roll number | 23/43/4 |
| Embarkation details | Unit embarked from Brisbane, Queensland, on board HMAT A75 Marathon on |
| Regimental number from Nominal Roll | 6156 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 26th Battalion |
| Fate | Returned to Australia |
| Discharge date | |
| Other details |
War service: Western Front Commenced return to Australia on board HT "Medic', 10 Apirl 1919; disembarked Brisbane, 31 May 1919; discharged (medically unfit), Brisbane, 11 July 1919. Medals: British War Medal, Victory Medal |
| Date of death | |
| Age at death | 33 |
| Place of burial | Manly West Cemetery, New South Wales |
| Sources | NAA: B2455, SPARKS William George |