Gimhae Air Base Korean War as Pusan West (K-1) Air Base and hosted United States Air Force and United States Marine Corps units. On 25 June 1950, 10 divisions of the North Korean People's Army attacked the Republic of Korea. The North Koreans quickly overwhelmed the South Korean Army and moved south. Following the passing of United Nations Security Council Resolution 83 on 27 June 1950, President Truman ordered US forces to defend the Republic of Korea. On 30 June 1950 C-54s of the Fifth Air Force began transporting a battalion of the 24th Infantry Division from Itazuke Air Base to K-1, however
North Korea–South Korea relations the South the following year, though the US Korean Military Advisory Group remained to train the Republic of Korea Army. As a result, two antagonistic states emerged, with diametrically opposed political, economic, and social systems. Both opposing governments considered themselves to be the government of the whole of Korea, and both saw the division as temporary. The DPRK proclaimed Seoul to be its official capital, a position not changed until 1972. North Korea invaded the South on June 25, 1950, and swiftly overran most of the country. In September 1950 the United Nations force, led by the United States, intervened