
In May 1940, it looked like the deadly 'wolf packs' of German U-boats would sever Britain's Atlantic lifeline and force her to surrender.
In May 1940, it looked like the deadly 'wolf packs' of German U-boats would sever Britain's Atlantic lifeline and force her to surrender.
In 1941 the Atlantic convoys slowly began to fight back, using cutting-edge technology that turned the German U-boat hunters into the hunted.