 "Crowley" based at Ulithi from 21 November 1944, joining a logistics group supporting the fast carrier task forces.Until 1 February 1945 she escorted oilers to the ocean rendezvous at which they replenished the carrier forces striking Luzon, Formosa, and the China coast, then operated with the oilers in the assault on Iwo Jima until 22 March.Departing Ulithi on 22 March, "Crowley" arrived at Guam on 9 April and continued escorting oilers during the Okinawa operations until 18 June.