| Regimental number | 1657 |
| Place of birth | Sydney New South Wales |
| Religion | Church of England |
| Occupation | Surveyor |
| Address | Penrivie Street, Sydney, New South Wales |
| Marital status | Single |
| Age at embarkation | 18 |
| Next of kin | Father, H Wallach, Penrivie Street, Sydney, New South Wales |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 13th Battalion, 3rd Reinforcement |
| AWM Embarkation Roll number | 23/30/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A49 Seang Choon on |
| Rank from Nominal Roll | Captain |
| Unit from Nominal Roll | 13th Battalion |
| Recommendations (Medals and Awards) |
Mention in Despatches Awarded, and gazetted, 'London Gazette', second Supplement, No. 30448 (28 December 1917); 'Commonwealth Gazette' No. 57 (18 April 1918). |
| Fate | Killed in Action |
| Place of burial | Villers-Bretonneux Military Cemetery (Plot XI, Row A, Grave 1), Fouilloy, France |
| Panel number, Roll of Honour, Australian War Memorial | 71 |
| Miscellaneous information from cemetery records | Parents: Mary and Henry WALLACH |
| Medals |
Military Cross Source: 'Commonwealth Gazette' No. 57 Date: |
| Family/military connections | Brother: Captain Clarence WALLACH MC, 19th Bn, died of wounds, 22 April 1918. |
| Other details | Medals: Military Cross, 1914-15 Star, British War Medal, Victory Medal |