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
Armed Forces Day (South Korea) Armed Forces Day (South Korea) Armed Forces Day in South Korea is an annual event usually celebrated on 1 October to commemorate the service of men and women in the Republic of Korea Armed Forces. The day that South Korean forces broke through the 38th parallel in 1950 during the Korean War. It is not a national holiday or public day off, but a National Flag Raising Day (국기게양일) to recognize and honor the South Korean military. In 2017, the holiday was celebrated on 28 September rather than the usual date to avoid clashing with the lunar holiday of Chuseok.