"Wrangell" arrived at Pearl Harbor on 21 December, but got underway again on Christmas Eve, bound for the Marshalls. Arriving at Eniwetok on the last day of 1944, the ammunition ship joined a Ulithi-bound convoy (number 31) that day and pushed on for the Carolines. "Wrangell" dropped anchor in Ulithi Lagoon on 5 January and reported for duty to Commander, Service Squadron 10. Over the next five months, "Wrangell" operated from Ulithi supporting the Fleet's operations against Iwo Jima, Okinawa, and the Japanese home islands. In those months, she transferred over, 10,000 tons of all types of ammunition to combatant ships steaming alongside while underway and would frequently serve two ships at a time: heavv ships (battleships, aircraft carriers, and heavy cruisers) alongside to port and light units (light cruisers and destroyers) alongside to starboard.