An intercepted cable from an American spymaster helped the Nazis spread misleading rumors during the war A US intelligence chief inadvertently helped the Nazis push disinformation during World War II after he continued using a cipher that had been compromised by the Germans, according to classified records discussed in a new book. In his new book, 'Covert Legions: US Army Intelligence in Germany 1944-1949', historian and author Thomas Boghardt claims that mistakes by an American spy could have helped the Nazis spread false information about Adolf Hitler's Alpine redoubt. In one of the most successful disinformation campaigns of World War...