Canada did not officially participate in the Vietnam War. However, it contributed to peacekeeping forces in 1973 to help enforce the Paris Peace Accords.[1]
At least 134 Canadians died or were reported missing in Vietnam.[2]
About 30,000 Canadians volunteered to fight for the U.S. in Southeast Asia.[17] Among the volunteers were fifty Mohawks from the Kahnawake reserve near Montreal.[18] U.S. Army SergeantPeter C. Lemon, an immigrant from Canada, was awarded the U.S. Medal of Honor for his valour in the conflict. (This cross-border enlistment was not unprecedented: Both the First and the Second World War saw thousands of Americans join the Canadian Armed Forces before the U.S officially declared war on Germany) [19]
See original article and more information here:
https://en.wikipedia.org/wiki/Canada_and_the_Vietnam_War