Corinto, Nicaragua
With the initial assignment of hull classification symbols and numbers to U.S. Navy ships in 1920, "Galveston" was classified as PG-31. She then returned home by way of Suez Canal and Mediterranean ports reached Boston 17 September 1920, and became a unit of the Special Service Squadron watching over American interests in waters ranging to the Panama Canal and down the West Coast of the Central American States to Corinto, Nicaragua. On 8 August 1921 she was reclassified CL-19. She also intermittently patrolled in the Gulf of Mexico with periodic calls at ports of Florida, Texas, Alabama, and Louisiana. The end of this service was climaxed by a visit to her namesake city in Texas, where she arrived from Panama 26 August 1923 to represent the Navy at the American Legion convention. She then steamed to the Charleston Navy Yard and decommissioned 30 November 1923.