Rubuta ci gaba don wannan sakin layi - Bayan harin Japan a kan Pearl Harbor ya tura Amurka a cikin yaƙin a ranar 7 ga Disamba, 1941, "Niblack" ya ci gaba da rakiyar jiragen ruwa na Arewacin Atlantic zuwa Reykjavík, Iceland, Derry, Arewacin Ireland, da Greenock, Scotland. A watan Yuli na shekarar 1942 an tura shi zuwa Caribbean don aiki na wucin gadi a lokacin yakin basasa na U-boat a can, ya sake komawa aikin arewa a watan Agusta. A watan Nuwambar 1942, ta bi sahun farko na tallafi zuwa Casablanca bayan saukar Allied
a gabar tekun Morocco. Daga nan sai jirgin ya yi aikin rakiyar jiragen ruwa na bakin teku har sai ya tashi a farkon watan Mayu 1943 zuwa Mers-el-Kébir, Algeria.