Guest protected transports landing the
Marine Raiders on
Green Island 31 January 1944. As the Raiders reembarked the next morning, she made two
depth charge attacks on a diving
submarine.
Hudson (DD-475) followed up this attack to complete the kill of the 1,400-ton Japanese submarine
I-171.
Guest again screened transports during invasion of the
Green Islands 15 February 1944. She bombarded
Kavieng,
New Ireland 25 February, and the
Sanba River area on Bougainville 17 March. She rescued the crew of
PT-63 on the latter date. In a case of mistaken identity on 17 March motor torpedo boat PT-283 was sunk by friendly fire from destroyer Guest (DD-472), in the Solomons, near Choseul Island. Her 5-inch gunfire destroyed the grounded Japanese freighter
Meisyo Maru 30 April to the east of
Nemto Island. After amphibious assault training in the New Hebrides, she departed from
Roi, in the
Marshall Islands, 10 June 1944 for the
invasion and capture of the Mariana Islands.
Guest poured gunfire ahead of troops
landing on Saipan 15 June 1944, then helped repel four massive air raids against Admiral
Marc Mitscher's
Fast Carrier Task Force in the
Battle of the Philippine Sea. She also conducted pre-invasion bombardment of
Guam and gave direct gunfire support to the
landings on Guam 21 July 1944. She remained on bombardment support and patrol stations until 9 August, then sailed for amphibious warfare exercises in the
Solomons.
Guest departed
Purvis Bay, Solomon Islands, 6 September 1944. A unit of Rear Admiral
Jesse Oldendorf's Western Fire Support group, she bombarded
Angaur in the
Palau Islands 12 September 1944. The following day she rescued 7 officers and 45 men of destroyer
Perry (DMS-17), which hit a
mine and sank off Angaur.
Guest departed the area 25 September and entered
San Francisco Bay 25 October 1944 for overhaul. ==1945==