After operating with the Army Transport Service as USAT "General Daniel I. Sultan", the ship was reacquired by the Navy on 1 March 1950 and reinstated on the Naval Vessel Register on the same day. Assigned to the Military Sea Transportation Service (MSTS) as USNS "General Daniel I. Sultan" (T-AP-120), the transport, operating out of San Francisco, supported United Nations operations in Korea which came as a result of the North Korean invasion in June 1950. She sailed from Sasebo for Pusan, South Korea, arriving on 31 July 1950, on her first run to that new war. She then returned to Yokohama, and sailed thence to San Francisco, reaching that port on 12 August.