On 1 March 1950 she was transferred to the Military Sea Transportation Service (MSTS) as USNS General C. H. Muir (T-AP-142).

The long Pacific war over, General C. H. Muir sailed 3 September to pick up returning veterans at Mediterranean and Indian Ocean ports.

In late 1952 the ship sailed from New York through the Mediterranean and thence through the Suez Canal bringing reinforcements to U.N. troops fighting in Korea.

She made another long rotation voyage, stopping at many European and Asian ports before being placed in Reduced Operational Status at New York 30 September 1953.

In August 1954 General C. H. Muir steamed through the Panama Canal to San Francisco and sailed once more to Korea with replacement troops.

She entered the National Defense Reserve Fleet 30 June, and was berthed at Suisun Bay, California until 1968.

In 1969 Sea Land had Todd Shipyard, Galveston convert her to an 18,455-gross ton container ship named SS Chicago, USCG ON 516542, IMO 6904806.