in the Baie de la Seine and at 03:20 commenced bombardment of the beaches and waterfront of the Pointe du Hoc–Vierville-sur-Mer area. By 06:16 she had neutralized her assigned targets (three pillboxes, 13 machine gun nests and three shore guns) and had begun to take on targets of opportunity. By the end of the day, she had added to her score seven pillboxes, eight gun emplacements and ten stone houses, in which enemy machine guns and snipers had been placed. Resupplying and fueling at Portland and Plymouth, McCook continued to operate in the invasion area until 14 July. Four days later she was en route to Bizerte screening a convoy of LSTs and infantry landing craft. She delivered her charges on 28 July and steamed to Mers-el-Kebir, where she remained until 4 August. She then sailed to Naples to join the forces assembling for Operation Anvil, the invasion of southern France. On 13 August she sailed for France, arriving on 14 August to take up a screening position south of Toulon. For the next 35 days she remained in the assault area providing gunfire support and screen protection to the Allied combatants and to the supply and reinforcement convoys from Corsica and Naples. She departed for the United States via Oran and Gibraltar on 21 September. She arrived at New York 3 October, and operated off the east coast until close to the end of the year. She again resumed transatlantic convoy duties on 28 December, completing six by 24 May 1945 when she entered the Philadelphia Navy Yard. There she commenced conversion to a destroyer-minesweeper. She was reclassified DMS-36 on 30 May. Her conversion completed on 12 July, she conducted minesweeping exercises until 12 August. She then departed for postwar duties in the western Pacific. Postwar services McCook arrived at Okinawa 28 September and, after riding out two typhoons, commenced minesweeping operations in the Yellow Sea toward the end of October. Working with MinRon 1, she cut 77 of the 500 mines swept by that group during the period 23 October to 15 November. She arrived at Sasebo for duty in the coastal waters of Japan on 17 November. Assigned a courier trip to Wakayama, 14 December, she suffered extensive damage in a typhoon on the return voyage. Repairs were begun upon her return to Sasebo on 18 November and finished the next month. She sailed to the Kure–Hiroshima