In the fall of 1939, Germany and the Soviet Union signed the Molotov-Ribbentrop Pact, a peace treaty in which the two nations also agreed to divide Poland. Soon afterward, the German army invaded Poland, unveiling a new type of warfare that became known as “Blitzkrieg.” After the fall of Poland, Europe settled into an uneasy calm. Meanwhile, Soviet soldiers invaded Finland but met with fierce resistance. In this episode, Sean and James tell the story of Blitzkrieg, Sitzkrieg, and the Winter War between the USSR and Finland.