In World War II, Germany had, had lots of success while fighting battles. They had a winning streak that they did not want to break. Germany decided to invade Poland, but did not want to anger the Soviet Union. They create the Nazi-Soviet Pact to split Poland. Germany wanted to invade Soviet Union to take some of the natural resources that they had, including oil. When Germany decided to invade the Soviet Union in Operation Barbarossa, the Soviet Union was not happy at all.