 After patrol and escort assignments supporting occupation activities in the Marianas and Philippines, "Chevalier" sailed from Saipan 25 March 1946 for San Diego, arriving 11 April.Before the Korean War, "Chevalier" completed tours of duty in the western Pacific in 1946–7, and 1948–9, and maintained her readiness through local operations from San Diego.On 18 March 1949, she was reclassified DDR-805, a radar picket destroyer, and during the summer and fall of 1949 operated in the Hawaiian Islands.