For almost a month, she remained in the Solomons, escorting convoys, conducting combat training, and resting and resupplying in port. Then, on 4 June 1944, she steamed on a course for the Marshall Islands, reaching Kwajalein on the 8th, patrolling there until the 12th, and then steaming for Eniwetok. She entered that lagoon on 28 June, and stayed there until 17 July, when she departed in the screen of TG 53.3, transporting troops to the Guam assault. The task group arrived off Guam early on the morning of the day of the landings, 21 July 1944; and the "Stevens" fired on enemy positions as the troops disembarked from the transports and landed on the island. The destroyer continued her fire support role of delivering harassing, interdiction, and call fire in support of the American troops and Marines ashore until her departure on 26 July 1944.