At 0425, Zero hour on August 15th, 1917, the Canadian Corps under the command of Lieutenant General Sir Arthur Currie began the assault on Hill 70. During the course of that assault, 1056 Canadian soldiers died. In the subsequent two days, 16 to 18 August, a further 449 died repelling the ensuing German counter attacks against the Canadian positions on Hill 70. A total of 1505 Canadian soldiers died during the capture and retention of Hill 70. A further 346 died during the attacks on Lens from 21 to 25 August. Overall, Canadian casualties numbered 9198 for the period 15 to 25 August.
The Veteran Affairs Canada website, Canadian Virtual War Memorial lists all of the personnel killed in the line of duty. This site encourages families to send digital photographs and personal memorabilia. The names of all the soldiers who died during WWI can be found on the Commonwealth War Graves Commission website. The attestation papers and records of all of the soldiers in the CEF can be accessed at the Library and Archives website. All of these websites are listed under quick links.