United States Air Force In South Korea of South Korea in resisting the invasion. United States President Harry Truman authorized General Douglas MacArthur (commander of the US occupying forces in Japan) to commit units to the battle. MacArthur ordered General George E. Stratemeyer, Commander in Chief of Far East Air Force (FEAF) based in Japan to attack invading North Korean forces between the front lines and the 38th parallel. That day, two Japan-based USAF F-82 Twin Mustangs destroyed three North Korean Air Force planes over Seoul as a C-54 Skymaster was attempting to evacuate U.S. civilians, including many women and children, from the advancing North Korean Army
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