Troop cars saw service through 1947, after which many were declared surplus and sold by the U.S. Army Transportation Corps to the railroads and were subsequently converted into baggage cars, express service boxcars, refrigerator cars, and cabooses, while others remained in sleeper configuration for use as bunk cars by maintenance of way crews. Several Kitchen Cars remained in Department of Defense service, being converted into Guard Cars to accompany sensitive military rail movements, such as military unit equipment deployments, and the Strategic Air Command's mobile B-52 and KC-135 cockpit simulators.