How Hitler's Blitzkrieg Tactic Shocked the Allies in WWII

The Blitzkrieg shocked the world: How could an army defeat its enemy so quickly and no one could counter it? Luckily the Allies cracked the code. Plus, learn about how knitters became crafty wartime spies and more WWII history.

How Hitler's Blitzkrieg Tactic Shocked the Allies in WWII

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