Rubuta ci gaba don wannan sakin layi - Bayan shakedown daga Bermuda, Birtaniya West Indies da Norfolk, Virginia "O'Brien" ya shiga rundunar sojojin 14 Mayu 1944 a kan hanyar zuwa Scotland da Ingila. Bayan aikin sintiri da rakiyar da ke kusa da Ingila, ta shiga cikin mamayewar Normandy da kuma Bombardment na Cherbourg
Ka yi haƙuri. A ranar 25 ga watan Yuni yayin da yake tallafawa mayakan minesweepers da kyau a bakin tekun daga cikin jirgin ruwa, wanda ya yi amfani da batir na Jamus a Cape Levi, kusa da Cherbourg, bindigogi na "O'Brien" sun kasance daidai da cewa matsayi na bindigogi na abokan gaba ya canza daga "Texas" zuwa "O'Brien". Ta karbi kai tsaye kai tsaye a kan gada, amma ya iya zama a tashar da ya isa ya sanya fuskar hayaƙi don "Texas". An kashe mutane goma sha uku kuma goma sha tara suka ji rauni. Bayan gyare-gyare na wucin gadi a Isle of Portland, Ingila, "O'Brien" ya bi wani jirgi zuwa Boston Naval Shipyard inda ta yi aiki mai yawa.