During the Korean War (1950-1953), the U.S. played a significant role as part of a United Nations coalition supporting South Korea against the invasion by North Korea. The American forces aimed to contain the spread of communism in Asia, reflecting the broader strategy of the Cold War. The U.S. contributed troops, military resources, and air support, which were crucial in repelling initial advances from the North. The conflict ended in an armistice, establishing a long-standing division of Korea along the 38th parallel.