"Indianapolis" returned to Saipan on 23 June to resume fire support and six days later moved to Tinian to attack shore installations (see Battle of Tinian). Meanwhile, Guam had been taken, and "Indianapolis" became the first ship to enter Apra Harbor since early in the war. The ship operated in the Marianas for the next few weeks, then moved to the Western Carolines, where further landings were planned. From 12 to 29 September, she bombarded Peleliu, in the Palau Group, before and after the landings (see Battle of Peleliu). She then sailed to Manus Island, in the Admiralty Islands, where she operated for 10 days before returning to the Mare Island Naval Shipyard in California for refitting.