Also known as "Barbarossa" Germans invaded the soviet union on June 22nd 1941. It was the largest military operation of world war II. This led to the depletion of communist threats to Germany, it also gave Nazi Germany amazing land. They siezed the Jews that resided in the Soviet union along with destroying any communist leaders they could get their hands on. This invasion took place only two years after the German-Soviet non aggression plan was signed.Eventually the soviet which had very few resources left, was forced to surrender.