War Plan Red was a secret U.S. military strategy developed in the early 20th century that outlined a potential invasion of Canada. Emerging from concerns about British Empire relations and the possibility of conflict, the plan envisioned a scenario where the U.S. would mobilize its military forces to secure Canada in the event of war with Britain. Created during the 1920s, War Plan Red detailed operational strategies, including key points of invasion, such as the Great Lakes and the St. Lawrence