Having served her apprenticeship, "Piedmont" sailed from Pearl Harbor to join the fleet in the Marshall Islands in mid-June. July and August were months of great fleet activity at Eniwetok. Periodically, task groups from the huge Task Force 58, which was supporting the Marianas campaign, returned to Eniwetok for rest, replenishment, and repairs. Unlike her duty at Pearl Harbor, all jobs were now a race against the calendar and, in addition, shore facilities were no longer available. During the month of July, 99 ships were provisioned with 888 tons of stores. The month of August turned out much the same with ships returning from the invasion of Guam.