USS Iowa (BB-61) 1948, as part of the post World War II drawdown of the armed forces, "Iowa" was deactivated at San Francisco, and then formally decommissioned into the United States Navy reserve fleets on 24 March 1949. In 1950, North Korea invaded South Korea, prompting the United Nations to authorize military intervention. President Harry S. Truman ordered US forces stationed in Japan to transfer to South Korea. Truman also sent US based troops, tanks, fighter and bomber aircraft, and a strong naval force to the area to support South Korea. As part of the naval mobilization, "Iowa" was reactivated on 14 July
Air Battle of South Korea point were losing the Battle of Chochiwon and the Battle of Taejon. By the start of the Battle of Pusan Perimeter, the air battle for South Korea had been won by the UN, and it used its air superiority decisively to its advantage during that battle. The UN would remain unopposed in the skies until the Chinese forces entered the war in November of that year. In spite of the unsuccessful UN ground action from June 25 to August 4, the air battle for South Korea was considered a crucial success for the UN forces. Able to attain air superiority