BATTLE OF THE ATLANTIC (see Cover)
The battle of the Atlantic last week narrowed toward a showdown. The Allies announced a plan for a transatlantic air umbrella to protect convoys "over every mile of the route from North America to Europe." Germany spoke of a "totality of U-boat warfare, which means that German U-boat warfare is equivalent to German naval warfare as a whole."
For weeks the Nazis had been forecasting an intensified U-boat offensive, a climactic effort to throttle the Allies' offensive plans in Europe. Submarines were indeed abroad in herds, but...