Returning to Manus on 24 November "Doyen" loaded Army troops at Cape Torokina, Bougainville, and trained them at Huon Gulf, New Guinea, for the amphibious assault at Lingayen Gulf on 9 and 10 January 1945. After repairs at Ulithi, she loaded cargo and embarked Marines at Guam. On 16 February she sailed for the initial assault on Iwo Jima on 19 February. She lay off the island to receive casualties whom she landed at Saipan on 9 March, then carried Seabees to Guam before arriving at Nouméa on 23 March for repairs and training.