"Dyson" joined TF 58 25 March 1944 and screened the fast carriers during the raids on Palau, Yap, Ulithi and Woleai of 30 March to 1 April; the Hollandia operations from 21 to 23 April; and the strikes on Truk, Satawan and Ponape from 29 April to 1 May. After replenishing at Majuro, she sortied with TF 58 again in June for preinvasion strikes on Saipan and Pagan and diversionary raids on the Bonins, screened the carriers during the Battle of the Philippine Sea, then began direct participation in the capture of the Marianas. She hunted Japanese shipping off Guam and Rota, bombarded gun emplacements and fired on barges.