1944
Walker transited the Panama Canal on 1 November 1943 and proceeded to join the forces engaged in the conquest of Tarawa. After a month of operations in that area, the destroyer took part in the Marshall Islands campaign from 29 January through 8 February 1944. She joined forces at Funafuti for the invasion of Kwajalein; and, as part of a heavy cruiser bombardment unit, she participated in numerous neutralization bombardments at Wotje and Taroa. The only Japanese resistance encountered came from shore batteries which failed to hit their mark.
From March through June 1944, Walker operated in the South Pacific escorting troops and transports from Guadalcanal to Bougainville and from various points in New Guinea. Other ports visited during this period were Purvis Bay, Tulagi; Empress Augusta Bay, Bougainville; Milne Bay and Buna, New Guinea.
The Marianas operation involved the invasion of Saipan, Tinian, and Guam by forces under Admiral Raymond A. Spruance. Walker began service assigned to an escort carrier unit providing air support for the amphibious forces headed for Guam. The group departed from Kwajalein in June; but, due to the bitterness of the campaign for Saipan, the Guam landings were postponed, and the ships returned to Eniwetok. After the need for further naval support had passed, Walker proceeded to Pearl Harbor for rehearsals of scheduled landings on Yap Island.
Leaving Pearl Harbor in September, Walker was transferred to the 7th Fleet as a fire support ship for the invasion of the Philippines. This group of transports and destroyers sailed from Manus and arrived at Leyte Gulf on 20 October. During this operation, Walker experienced her first air action and downed one enemy fighter plane as well as provided gunfire support in the Dulag area. The transports were rapidly unloaded and departed with Walker and other escorts prior to the arrival of the Japanese naval forces and the ensuing Battle of Leyte Gulf from 24 to 25 October 1944.
The group proceeded to Morotai to reload support troops for Leyte. At Morotai, nightly Japanese air attacks harassed the ships but caused little damage. The group then returned to Leyte and unloaded its troops. Suicide air attacks and torpedo bombers were encountered during this trip, but no damage was suffered. After a brief stop at Palau, Walker received orders to return home, and she reached the Mare Island Navy Yard, San Francisco, California, on Christmas Eve 1944.
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