The Conflict: Truman favored a strategy of "limited war" to contain communism on the Korean Peninsula without triggering World War III. Conversely, MacArthur advocated for total victory, pushing to expand military actions into China—including bombing campaigns and potentially utilizing atomic weapons.
The Fallout: Following a sequence of public challenges and insubordination from the General, Truman definitively relieved MacArthur of his command on April 11, 1951. The dismissal provoked immense domestic political backlash for Truman while cementing the fundamental U.S. constitutional doctrine of civilian control over the military.