Charles P. Cecil arrived at San Diego, her home port, on 20 November 1945, and almost at once sailed on a tour of Pacific duty which found her operating as part of Joint Task Force One in the atomic bomb tests at Bikini Atoll, as well as supporting occupation forces with operations in Japanese waters.

Reclassified DDR-835 on 18 March 1949, Charles P. Cecil left San Diego astern on 4 April 1949, bound for Newport, Rhode Island, and assignment to the Atlantic Fleet.

From January 1959, when she was fitted with highly complex electronic computational and tracking equipment, Charles P. Cecil concentrated on air defense experiments and exercises, contributing to the development of advanced techniques.

Charles P. Cecil was struck from the United States Navy's rolls of fighting ships on 1 October 1979 and subsequently sold to Greece and renamed Apostolis (D216) on 8 August 1980.

Named to honor the Naval Commander Nikolis Apostolis, who fought in the Greek War of Independence, she served with the Hellenic Navy until she was decommissioned in 1993.