BBC History of World War II

Battle of the Atlantic - Keeping Secrets (5x2)

Ημερομηνία προβολής: Ιούλ 14, 2002

How the allied forces fought back against the German U-Boats that had sunk more than 3 million tons of shipping in ther first 18 months of war. Allied intelligence was greatly helped by the capture of cipher material and an Enigma code machine.