 After the war ended, "Arcadia"s guns were removed at Baltimore, Maryland, on 4 December 1918, and her naval armed guard detachment was transferred off of the ship.On 20 January 1919, "Arcadia" was transferred to the U.S. Navy for service with the Cruiser and Transport Force.Assigned the naval registry identification number 1605, she was commissioned the same day as USS "Arcadia" (ID-1605) with Lieutenant Commander Peter F. Johnsen, USNRF, in command.