Twice within 25 years Britain was threatened with starvation by the menace of the U-Boat. In this study of submarine warfare, the author explains why Winston Churchill wrote "the only thing that ever frightened me during the war was the U-Boat per......

Twice within 25 years Britain was threatened with starvation by the menace of the U-Boat. In this study of submarine warfare, the author explains why Winston Churchill wrote "the only thing that ever frightened me during the war was the U-Boat per......