| Regimental number | 3599 |
| Place of birth | Manoora, South Australia |
| Religion | Church of England |
| Occupation | School teacher |
| Marital status | Single |
| Age at embarkation | 22 |
| Height | 5' 6" |
| Weight | 134 lbs |
| Next of kin | Father, Charles Fuller Johncock, School House, Clare, South Australia |
| Enlistment date | |
| Place of enlistment | Adelaide, South Australia |
| Rank from Nominal Roll | Lance Corporal |
| Unit from Nominal Roll | 43rd Battalion |
| Fate | Returned to Australia |
| Discharge date | |
| Other details |
Commenced return to Australia on board HT 'Wiltshire', 4 July 1919; disembarked Adelaide, 16 August 1919; discharged (termination of period of enlistment), Adelaide, 17 September 1919. Medals: British War Medal, Victory Medal |
| Miscellaneous details | Name does not appear on Embarkation Roll. |
| Sources | NAA: B2455, JOHNCOCK John Arthur |