The new attack transport arrived at Pearl Harbor on 4 February 1945, sailed for Iwo Jima on the 20th, and operated off that island for two weeks. She returned to Seattle, Washington, on 28 May and on 6 June embarked Army troops for Okinawa. "Rockbridge" arrived at the Hagushi anchorage on 24 July to debark the men and discharge cargo. During the six days she spent off Okinawa, the ship was harassed by night air attacks, but suffered no damage because of the concealing smoke made by all the vessels in the harbor.