Final answer:
Hitler's decision to invade Russia, also known as Operation Barbarossa, had several flaws. He underestimated the size and resilience of the Soviet Union, faced strong resistance, and dealt with the harsh Russian winter.
Step-by-step explanation:
Hitler's decision to invade Russia, also known as Operation Barbarossa, had several flaws. One major issue was his underestimation of the size and resilience of the Soviet Union. He believed that he could quickly defeat Russia within three months based on his previous successes in Poland and France, as well as Russia's quick exit from World War I. However, the Russian people and army showed a strong resistance, implementing a scorched earth policy and retreating to prevent the Germans from seizing resources. Hitler's troops also faced the harsh Russian winter without proper supplies, similar to what Napoleon's forces had encountered in their ill-fated attempt to conquer Russia. Ultimately, the invasion of Russia became a costly and drawn-out campaign for Germany.