After staging at Guadalcanal, "Callaway" proceeded combat loaded for the occupation of Emirau where her troops landed on 20 March 1944. Transfers of troops and cargo in the Solomons and Ellices, and training at Pearl Harbor continued until 29 May, when "Callaway" got underway for her third assault invasion, Saipan on 15 June. Laden with casualties, "Callaway" returned to Pearl Harbor to embark army troops for rehearsal landings at Guadalcanal.