After the outbreak of hostilities in Korea in the summer of 1950, the Chief of Naval Operations recommended that "Wiseman" be "reactivated at the earliest practicable [time] for distant duty including use as [an] Electric Power Supply Ship." Accordingly, "Wiseman" was recommissioned at San Diego on 11 September 1950, and, under the command of Lt.Comdr. Jay W. Land, rushed to Korea, reaching the port of Masan, near the mouth of the Naktong River, at the western anchor-point of the former beachhead at Pusan. As she had done at Manila in 1945, "Wiseman" supplied electricity to a city unable to generate its own. Later, the ship provided comforts-of-home to units of the 1st Marine Division quartered on the nearby pier, providing hot showers, cigarettes, and hot meals cooked in the ship's galley. The destroyer escort also provided instruction in seamanship, gunnery, radar, sonar, and damage control to 80 midshipmen from the Republic of Korea Naval Academy and 120 ROK Navy enlisted men.