"In the first week of April 1915, the Canadian troops were moved from their quiet sector to a bulge in the Allied line in front of the City of Ypres. This was the famed—or notorious—Ypres Salient, where the British and Allied line pushed into the German line in a concave bend. The Germans held the higher ground and were able to fire into the Allied trenches from the north, the south and the east. On the Canadian right were two British divisions, and on their left a French division, the 45th (Algerian)...."
"...Thus, in their first major appearance on a European battlefield, the Canadians established a reputation as a formidable fighting force. Congratulatory messages were cabled to the Canadian Prime Minister. But the cost was high. In these 48 hours, 6,035 Canadians, one man in every three, became casualties of whom more than 2,000 died. They were heavy losses for Canada's little force whose men had been civilians only several months before—a grim forerunner of what was still to come."
Source: Veterans Affairs Canada