Hitler's U-boat war

v. [1]. The hunters, 1939-1942.

v. [2]. The hunted, 1942-1945.

v. 1: The hunters, 1939-1942

The U-boat war against the British empire: September 1939-December 1941

The U-boat war against the Americas: December 1941-August 1942

v.2: The hunted, 1942-1945

The U-boat campaign against the British Commonwealth and the United States: September 1942-May 1945.