Question is unclear
Britain's involvement in the war led to the involvement of Canada, because it's a Commonwealth Nation.
Canada has not engaged in traditional invasions of other countries in the way that some nations have. However, it has participated in military operations and interventions, often as part of international coalitions, such as in Afghanistan and during the Gulf War. Additionally, Canada has a history of military involvement in peacekeeping missions around the world. Overall, Canada's military actions have typically focused on peacekeeping, humanitarian efforts, and collective defense rather than outright invasions.
Military involvement is mandatory in Mexico for all 18 year-old males.
How did the US go a isolationism foreign policy to a political and military involvement?
war
a top-secret history of the U.S. military involvement in Vietnam
Escalation
The military has only one opinion.
Military Ordinariate of Canada was created in 1951.
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The United States increased its military involvement in Vietnam.
Organization of Military Museums of Canada was created in 1967.