In 1942 the Allied powers faced the most seriouschallenge to their control of the seas encountered in the Second World War: the menace of the U-boat.
Eventually, the combination of intelligence, land and seabasedair power, and surface vessel operations from bothNorth American and British bases ended this threat, making possible the A.
Fast, well-armed, and long-ranged, Hitler\'s submarines attacked shipping throughout the North Atlantic, often within sight of America\'s coastal towns and cities.
In 1942 the Allied powers faced the most seriouschallenge to their control of the seas encountered in the Second World War: the menace of the U-boat