The U.S. involvement in the Korean War (1950-1953) was significant for several reasons. It marked a pivotal moment in the broader context of the Cold War, demonstrating the U.S. commitment to containing communism. After North Korea invaded South Korea, the U.S. led a United Nations coalition to defend South Korea, which became a key battleground in the fight between communist and capitalist ideologies. The war resulted in a stalemate and the establishment of the Korean Demilitarized Zone (DMZ), solidifying the division of Korea. This conflict also influenced U.S. military strategy and foreign relations for years to come, setting a precedent for future military engagements.