"Carter Hall" arrived at Guadalcanal on 12 May 1944 for amphibious training, then sailed to Kwajalein to stand by in case she should be needed during the invasion of Saipan. Her services not required for that assault, she sailed on to Eniwetok and final preparations for the smashing return to Guam, where she arrived 21 July, the day of the initial assault. She remained off the island, supporting the operation through servicing small craft, until 26 July. The dock landing ship returned to Hollandia on 29 August, and from 11 September to 1 October supported the operations at Morotai.