sentences:  After the outbreak of World War II, in January 1940, the government introduced the Liner Requisition Scheme and "Capetown Castle" was taken up for conversion into a troop ship.In 1943 she took part in Operation Bolero, the build-up of troops in preparation for D-Day, and was eventually returned to her owners in 1946, having sailed 484,000 miles and carried over 164,000 troops.The ship was refurbished at Belfast and returned to commercial service on 9 January 1947.