Pacific Air Forces to French Indochina as well as aid to the Nationalist Chinese during the Chinese Civil War which resumed after the end of World War II (1945–1949). On 25 June 1950, the armed forces of the Democratic People's Republic of Korea (e.g., North Korea) invaded South Korea. On 27 June, the United Nations Security Council voted to assist the South Koreans in resisting the invasion. President Harry Truman authorized General of the Army Douglas MacArthur (commander of the US occupying forces in Japan) to commit units to the battle. MacArthur ordered General George E. Stratemeyer, CIC of FEAF, to attack attacking
South Korea the largest contributor of UN troops. The United States participation was critical for preventing the near defeat of the Republic of Korea by northern forces, as well as fighting back for the territory gains that define the South Korean nation today. Following the Armistice, South Korea and the U.S. agreed to a "Mutual Defense Treaty", under which an attack on either party in the Pacific area would summon a response from both. In 1967, South Korea obliged the mutual defense treaty, by sending a large combat troop contingent to support the United States in the Vietnam War. The US has