| Regimental number | 8857 |
| Date of birth | |
| Place of birth | Semaphore, South Australia |
| School | Le Fevre's Peninsula Public School, South Australia |
| Religion | Methodist |
| Occupation | Draftsman |
| Address | 14 Edwin Terrace, Gilbert Town, South Australia |
| Marital status | Single |
| Age at embarkation | 20 |
| Next of kin | Mother, Mrs V Gellert, 14 Edwin Terrace, Gilbert Town, South Australia |
| Enlistment date | |
| Rank on enlistment | Driver |
| Unit name | 2nd Divisional Ammunition Column |
| AWM Embarkation Roll number | 25/90/1 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A39 Port Macquarie on |
| Rank from Nominal Roll | Driver |
| Unit from Nominal Roll | 4th Field Artillery Brigade |
| Fate | Returned to Australia |
| Miscellaneous details (Nominal Roll) | *Stated to be John Robert Gellert on NR |
| Discharge date | |
| Family/military connections | Brother: 3305 Lance Corporal Robert Burnett GELLERT MM, 6th Bn, killed in action, 27 October 1917. |
| Other details |
War service: Egypt, France, Belgium. Accidentally wounded at Bullecourt, France, April 1917; remained on duty. Admitted to Army General Hospital, Rouen, with trench fever, May 1917; transferred to Bath War Hospital, England, 18 June 1917; invalided to Australia, 16 March 1918; discharged as medically unfit, 1 May 1918. |