Answer:
the Second World War
Canada's role in the Second World War
While the great powers made more significant contributions to the war effort; for a country of only 11 million people Canada's contribution was remarkable.
Not only was Canada's war effort in World War II far more extensive than that in World War I, but it also had a much more lasting impact on Canadian society. ... Canadian foods, direct cash contributions to Britain, and munitions for the Allies, including the Soviet Union, contributed to the overall war effort.
Canada was a full partner in the success of the Allied landings in Normandy ('D- Day'). ... On D- Day and during the ensuing campaign, 15 R.C.A.F. fighter and fighter-bomber squadrons helped control the skies over Normandy and attacked enemy targets. On D-Day, Canadians suffered 1074 casualties, including 359 killed.
Even though there were some positive things that came out of the war, the negative effect it caused was much greater. More than 60 000 Canadians were killed and thousands were wounded. ... During World War I, Canada started to look like a real nation. Canadians began to work together to help end the war.