| Regimental number | 706 |
| Place of birth | Sydney, New South Wales |
| School | Sydney Grammar School, New South Wales |
| Religion | Church of England |
| Occupation | Clerk |
| Address | Pinkivil Street, Bondi, New South Wales |
| Marital status | Single |
| Age at embarkation | 25 |
| Height | 6' 0.75" |
| Weight | 197 lbs |
| Next of kin | Mother, Mrs H Wallach, Pinkivil Street, Bondi, New South Wales |
| Previous military service | Nil |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 19th Battalion, B Company |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT Ceramic on |
| Rank from Nominal Roll | Captain |
| Unit from Nominal Roll | 19th Battalion |
| Other details from Roll of Honour Circular | Represented Australia Rugby Union football in 1913 and 1914. |
| Fate | Died of wounds |
| Age at death | 28 |
| Place of burial | Etretat Churchyard Extension (Plot II, Row D, Grave No 1)), Le Havre, Haute-Normandie, France |
| Panel number, Roll of Honour, Australian War Memorial | 90 |
| Miscellaneous information from cemetery records | Parents: Mary Wallach, of 31, Ocean St., Bondi, New South Wales, and the late Henry Wallach |
| Medals |
Military Cross 'For conspicuous gallantry during operations. Under a very heavy bombardment, which lasted forty-eight hours, after his company commander had been killed and the company had suffered severely, he took command and steadied the men by his fine example and cool courage.'
Source: 'Commonwealth Gazette' No 184 Date: |
| Family/military connections | Brother: Captain Neville Wallack MC, 13th Bn, killed in action, 1 May 1918. |
| Other details |
War service: Egypt, Gallipoli, Western Front Medals: Military Cross, 1914-15 Star, British War Medal, Victory Medal |
| Miscellaneous details | Surname entered incorrectly on Embarkation Roll as WALLACK. |
| Sources | NAA: B2455, WALLACH Clarence |
Postal Address:
Po Box 7916
Canberra BC 2610, Australia
Street Address:
Northcott Drive,
Campbell, ACT 2600
