Lesson Plan: How the Korean War Changed the Way the U.S. Goes to Battle
Grades 9-12
The Cold War was an ideological and sometimes military struggle between the United States and the Soviet Union. By 1950, these tensions materialized in the Korean War, a proxy war that began when North Korean forces invaded South Korea. President Harry Truman used the newly formed United Nations Security Council to send U.S. troops to Korea under the guise of a police action rather than approaching Congress to seek a declaration of war. This decision set a precedent for subsequent presidents to send American troops to intervene in foreign conflicts without having to ask Congress to declare war and affected the balance of power between the legislative and executive branches of government.
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