1945
She rescued survivors of the kamikaze-damaged escort carrier Ommaney Bay 4 January 1945, and survivors of destroyer Stafford and escort carrier Manila Bay the following day. She shot down a suicide plane diving on carrier Salamaua 13 January, remaining on guard for carriers in support of the Lingayen Gulf invasion landings until the 17th. She then proceeded to Ulithi in the Carolines to prepare for the impending invasion of Iwo Jima.
Patterson departed Ulithi 10 February for final battle rehearsals and staging in the Marianas, thence in the screen of escort carriers covering the amphibious expeditionary troops for the landings on Iwo Jima, 19 February. She rescued 106 survivors of the escort carrier Bismarck Sea, sunk by enemy torpedo plane attacks off Iwo Jima 21 February. The fighting destroyer remained off Iwo Jima with escort carriers until 10 March, then set course for Ulithi to prepare for the capture and occupation of Okinawa, the “last stepping stone” to Japan.
Patterson sailed from Ulithi the morning of 21 March, en route with a support unit of seven escort aircraft carriers that gave direct cover to troops storming ashore at Okinawa 1 April. She shot down an enemy suicide plane that attacked escort carrier Lunga Point 2 April and continued to guard the escort carriers as they pounded enemy troop concentrations and installations through 29 April. When her sonar gear became inoperative 29 April, she set course for repairs at Apra Harbor, Guam. She put to sea from Apra Harbor 4 June, escorting battleship New Mexico as far as Leyte in the Philippines, There she joined a troop and supply reinforcement convoy bound to Kerama Retto. By 12 June she had rejoined the escort carriers giving direct support to troops until the bitter contest for Okinawa was won.
Patterson returned to Leyte for repairs then headed for Saipan, Mariana Islands. This was her base for escort-patrol missions reaching to Okinawa, Guam, and towards the Marshalls until the close of hostilities with Japan.
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