EntityQ2498820· pop 8· linked from 54 articlesMid-Atlantic gapSign in to savethe passages between the Norwegian Sea and central Atlantic left undefended early in WWIIConnectionsSir Arthur Harris, 1st BaronetEntityWorld War IIConceptWinston ChurchillPersonInternational Standard Book NumberEntityHalifaxEntityBrestEntityWayback MachineEntityhertzEntityLorientEntitySaint-NazaireEntityKarl DönitzEntityPatrick BlackettEntityPacific WarEntityOCLC, Inc.EntityRoyal NavyEntityBoeing B-17 Flying FortressEntityEnigmaEntityKriegsmarineEntityoperations researchEntityBattle of the AtlanticEntityCategoriesAnti-submarine warfareBattle of the Atlantic