Napoleon, in his quest to take over Europe, had to attack Russia. He rode in in the summer with 600,000 men, expecting it to be an easy victory. The Russians, however, were prepared for him. They burned all of the villages the French came to and then retreated, which lead the French further and further into the country and closer and closer to winter, with dwindling supplies. They turned around once they hit Moscow, but the winter was to be one of the coldest in history and their supplies were not enough to last even long enough to get to Moscow. As a result, Napoleon left Russia with only 100,000 men.