Guest: Barry Jacobsen, military historian and blogger, will tell us about Hitler's Germany decision to invade Stalin's USSR.......It was the largest military operation in human history: 3.8 million men, 3,350 tanks, 7,000 artillery pieces, and 2,800 aircraft.......more men, tanks, guns and aircraft were committed than had ever been deployed before in a single offensive.................and more stories..........
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