Throughout July, "Iowa" remained off the Marianas supporting air strikes on the Palaus and landings on Guam. After a month's rest, "Iowa" sailed from Eniwetok as part of the Third Fleet, and helped support the landings on Peleliu on 17 September. She then protected the carriers during air strikes against the Central Philippines to neutralize enemy air power for the long-awaited invasion of the Philippines. On 10 October, "Iowa" arrived off Okinawa for a series of air strikes on the Ryukyu Islands and Formosa. She then supported air strikes against Luzon on 18 October and continued this duty during General Douglas MacArthur's landing on Leyte on 20 October.