With the expansion of the fleet dictated by the outbreak of the Korean War, "Capricornus" was recommissioned on 12 October 1950. Through 1960, she operated from Norfolk in training and exercises in Chesapeake Bay and in the Caribbean, along with five periodic deployments to the Mediterranean for service with the 6th Fleet. Notable in her operations were her rescue and salvage assistance to the burning radar picket on 13 November 1955, followed by the difficult towing of the rescued ship to Brooklyn for repairs. In July 1958, "Capricornus" supported the landing of Marines in Lebanon which forestalled a serious Middle Eastern eruption.