 The destroyer underwent shakedown off San Diego, was ordered to the U.S. Atlantic Fleet and in her first year escorted two convoys to Africa and one to Ireland, Panama, and Trinidad.In preparation for the European invasion "Endicott" served as escort for merchantmen and transports until 24 May 1944 when she collided with the freighter SS "Exhibitor" and was forced to undergo repairs at Cardiff, South Wales.