Pegasus supported the British intervention in the Russian Civil War between May and September 1919 and was based at Archangel. The ship returned to Rosyth and was briefly decommissioned. She recommissioned on 2 December 1919 and was transferred to the Mediterranean Fleet in March 1920. Pegasus ran aground on 9 March off Kerch, but was pulled off without suffering any significant damage.
Pegasus, a ship that supported British intervention in the Russian Civil War from May to September 1919, was based at Archangel. After returning to Rosyth and being briefly decommissioned, she was recommissioned on December 2nd, 1919, and transferred to the Mediterranean Fleet in March 1920. Pegasus ran aground off Kerch on March 9th but was successfully refloated without major damage.