Grey Wolves - The U-boat War 1939-1945, Philip Kaplan.

Grey Wolves - The U-boat War 1939-1945, Philip Kaplan.
A thematic approach to the U-boat war, looking at elements such as the crews, captains, protected shelters, individual aspects of the U-boat campaign itself, their weapons and their opponents. Provides some interesting insights into the Battle of the Atlantic, although is best used along a more conventional history of the Battle of the Atlantic.
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