| Regimental number | 3649 |
| Religion | Church of England |
| Occupation | Cabinet machinist |
| Address | Maylands, South Australia |
| Marital status | Single |
| Age at embarkation | 18 |
| Height | 5' 7.5" |
| Weight | `36 lbs |
| Next of kin | Mother, Mrs M D Wegner, 12 Dover Street, Maylands, South Australia |
| Previous military service | 79th Infantry |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 5th Pioneer Battalion, Reinforcement 9 |
| AWM Embarkation Roll number | 14/17/4 |
| Embarkation details | Unit embarked from Adelaide, South Australia, on board HMAT A48 Seang Bee on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 4th Motor Transport Company |
| Fate | Returned to Australia |
| Discharge date | |
| Other details |
War service: Western Front Commenced return to Australia on board HT 'Wiltshire', 4 July 1919; discharged, Adelaide, 25 September 1919. Medals: British War Medal, Victory Medal Changed name by Deed Poll, July 1940, to Jack Edward ALEXANDER. Also served in World War II: Service No S212703. |
| Sources | NAA: B884, WEGNER Ernest Joachim |