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
25th Infantry Division Artillery (United States) Division was ordered to defend the final US/South Korean stronghold of Pusan against North Korean attack. In July 1950, the 25th DIVARTY landed in South Korea with the 8th, 64th, 90th, and the 159th Field Artillery Battalions. 25th DIVARTY fires supported the first offensive actions by the division with the capture of the Yechon Road Junction on July 20, 1950. 25th DIVARTY participated in all ten of 25th Infantry Division's campaigns. 25th DIVARTY entered the Vietnam War in support of 25th Infantry Division, 1st Marine Division, and Republic of Vietnam forces to provide fire support to these units, additionally 25th