Timeline of United States military operations May 1949. 1948–1949: China: Marines were dispatched to Nanking to protect the American Embassy when the city fell to Communist troops, and to Shanghai to aid in the protection and evacuation of Americans. 1950–1953: Korean War: The United States responded to the North Korean invasion of South Korea by going to its assistance, pursuant to United Nations Security Council resolutions. US forces deployed in Korea exceeded 300,000 during the last year of the active conflict (1953). Over 36,600 US military were killed in action. 1950–1955: Formosa (Taiwan): In June 1950, at the beginning of the Korean War, President Truman ordered
II Corps (South Korea) reinforced by the People's Volunteer Army. U.S. Army General Walker ordered that the scattered ROK Army units, scattered by the North Korean invasion be organized into two corps. Thus the II Corps was born July 24, 1950 to defend the "Pusan Perimeter". On October 10, 1950, the ROK II Corps advanced north of the 38th parallel through central North Korea. They were operating in support of ROK I Corps which was under the command of U.S. Army General Walker. After encountering minimal resistance, they veered northwest. On October 24, hoping to end the conflict quickly, General MacArthur ordered all of