On September 15, 1950, during the Korean War, Marines landed at Inchon in South Korea. From the article:
"On September 15, 1950, during the Korean War (1950-53), U.S. Marines force made a surprise amphibious landing at the strategic port of Inchon, on the west coast of Korea, about 100 miles south of the 38th parallel and 25 miles from Seoul. The location had been criticized as too risky, but United Nations (U.N.) Supreme Commander Douglas MacArthur (1880-1964) insisted on carrying out the bold landing. Afterward, the American-led U.N. force was able to break North Korean supply lines and push inland to recapture Seoul, the South Korean capital that had fallen to the Communists in June.The landing at Inchon changed the course of the war; however, the conflict later settled into a long, bloody stalemate that did not end until a July 1953 armistice."