Twentieth Air Force Bombardment Group, remaining at North Field, Guam as its only operational organization. In 1949, budget reductions forced the realignment and consolidation of Air Force units in the pacific, and the mission of Twentieth Air Force became the defense of the Ryukyu Islands and was reassigned to Kadena AB, Okinawa. It commanded the following units: On 27 June 1950, the United Nations Security Council voted to assist the South Koreans in resisting the invasion of their nation by North Korea. President Harry S. Truman authorized General Douglas MacArthur (commander of the US occupying forces in Japan) to commit units to the
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