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
South Korea apply since 2011. In addition to male conscription in South Korea's sovereign military, 1,800 Korean males are selected every year to serve 21 months in the KATUSA Program to further augment the United States Forces Korea (USFK). In 2010, South Korea was spending ₩1.68 trillion in a cost-sharing agreement with the US to provide budgetary support to the US forces in Korea, on top of the ₩29.6 trillion budget for its own military. The South Korean army has 2,500 tanks in operation, including the K1A1 and K2 Black Panther, which form the backbone of the South Korean army's mechanized armor