 The Old Bay Line was controlled by the Seaboard Air Line Railway; Warfield was president of both companies in the 1920s.During World War II, the "President Warfield" was acquired by the U. S. government and transferred to Great Britain in 1942 under the Lend-Lease program to serve as a troop transport.In 1944, the ship was put under U. S. Navy control, and was laid up as surplus in 1945 after the war ended.