| Regimental number | 3 |
| Place of birth | Williamstown, Victoria |
| Religion | Church of England |
| Occupation | Law clerk |
| Address | Police Station, Burnley, Victoria |
| Marital status | Single |
| Age at embarkation | 22 |
| Height | 5' 7.75" |
| Weight | 157 lbs |
| Next of kin | Father, W C Copperthwaite, Police Station, Burnley, Victoria |
| Previous military service | Served iin the 5th A.I.R and the 64th Infantry |
| Enlistment date | |
| Place of enlistment | Melbourne, Victoria |
| Rank on enlistment | Sergeant |
| Unit name | 6th Battalion, Headquarters |
| AWM Embarkation Roll number | 23/23/1 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A20 Hororata on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 3rd Echelon |
| Fate | Returned to Australia |
| Medals |
Meritorious Service Medal Source: 'Commonwealth Gazette' No. 57 Date: Medal of the Most Excellent Order of the British Empire (Military Division) Source: 'Commonwealth Gazette' No. 33 Date: |
| Discharge date | |
| Other details |
Medals: 1914-15 Star, British War Medal, Victory Medal |
| Sources | NAA: B2455, COPPERTHWAITE William Charles |