The next day, the ship began loading cargo and passengers in preparation for the Iwo Jima assault. She departed Pearl Harbor on 27 January in convoy, bound for Iwo Jima. She stopped at Eniwetok and Saipan along the way and arrived off the objective early on the morning of 19 February. The attack cargo ship participated in the D-Day landings sending supplies and ammunition ashore to the troops struggling to wrest the island from a tenacious foe. She continued to fuel the offensive ashore until 5 March when — with 188 battle casualties embarked — she set a course for Guam in the Marianas, where the casualties disembarked. She then moved on to the New Hebrides.