After training exercises in the Hawaiian Islands, "Dashiell" arrived at Guadalcanal 16 March 1944. She cleared the next day to bombard Kavieng, New Ireland, on 20 March. "Dashiell" provided fire support, patrol, and convoy escort services from 6 April to 13 May as landings were made on the coast of New Guinea. She returned to Port Purvis on Florida Island in the Solomons 17 May to prepare for the invasion of the Marianas. She sailed 4 June to guard transports held in reserve during the assaults on Saipan and on Tinian, then screened the landings at Guam during which she provided fire support from 20 to 26 July.