 Following a Caribbean shakedown and type training off the East Coast, "New" got underway for the Mediterranean on 8 August 1946.During the first week of September she cruised off the coast of Greece with the aircraft carrier , providing weight to American diplomatic efforts to assure Greek citizens the right of self-determination in the 1 September plebiscite which returned King George II to the throne and reinforced their previously recorded (31 March 1946) repudiation of the Communist Party and its supporters, who were then engaged in guerrilla activities.Her mission, a precursor to the Truman Doctrine, completed, "New" joined Task Group 125.4 (TG 125.4), then operating with British warships in the Adriatic to prevent any outbreak of hostilities between Italy and Yugoslavia over Trieste.