Assigned to Division 21, Atlantic Fleet, Maddox departed Boston 3 May 1919 for Trepassey, Newfoundland, en route to the Azores where she became part of a "bridge of ships" assigned to guide US Navy flying boatsNC-1 and NC-4 across the ocean on the first transatlantic flight. Returning to Boston on 22 May, the destroyer operated out of there until she sailed for Europe on 26 August 1919. Arriving at Brest, France on 19 September, she soon joined an honor escort for George Washington, then bound for Ostend, Belgium, to embark the Belgian King and Queen for the United States. Detached on 25 September, Maddox commenced cross-channel service. Until 24 October she escorted ships and carried naval and Army passengers from Dover and Harwich to Boulogne, France, and the Hook of Holland. Departing Harwich on 25 October, the four stacker proceeded through Kiel Canal to visit various Baltic ports.
Returning to the United States on 12 February 1920, Maddox operated out of Boston for the next 2 years, off the east coast. Departing Boston on 25 February 1922 for Philadelphia, she decommissioned at the Philadelphia Navy Yard on 14 June 1922.
Inactive for the next 18 years, Maddox recommissioned on 17 June 1940. After brief duty on mid-Atlantic Neutrality Patrol, she departed Newport, Rhode Island on 16 September 1940 for Halifax, Nova Scotia, where she decommissioned on 23 September 1940. The same day, under the destroyer-naval base agreement, she was transferred to Great Britain and commissioned in the Royal Navy as HMS Georgetown.
Royal Navy and Royal Canadian Navy service
As Georgetown, she participated in operation "Bowery", escorting the aircraft carrierWasp in May 1942 on her second reinforcement of the Supermarine Spitfire strength on the island of Malta. In September 1942, she transferred to the Royal Canadian Navy for convoy escort duties in the western Atlantic, captained by Lt. Cdr. Peter Graeme MacIver.[1]Georgetown was modified for trade convoy escort service by removal of three of the original 4"/50 caliber guns and one of the triple torpedo tube mounts to reduce topside weight for additional depth charge stowage and installation of Hedgehog anti-submarine launcher.[2] Returned to the United Kingdom in December 1943, she joined the Reserve Fleet.
In Soviet service
In August 1944 Georgetown was turned over to the Soviet Navy. She was renamed (sources vary) either Doblestny (rus. "Glorious or Valiant")[3] or Zhyostky (rus. "Rigid").[4]
She was returned to the Royal Navy on 9 September 1952 and scrapped on 16 September 1952.