"Milwaukee" was recommissioned in ordinary service on 17 June 1913 and was assigned to the Pacific Reserve Fleet. In the next two years the ship made several brief cruises, one to Honolulu with a detachment of Washington State Naval Militia from 1–22 July 1914, and several along the coast of California. On 18 March 1916, "Milwaukee" was detached from the Reserve Fleet and assigned to duty as a tender to destroyers and submarines of the Pacific Fleet. Based at San Diego, the cruiser participated in exercises and maneuvers off the coast, patrolled Mexican waters, transported refugees, and performed survey duty.