Napoleon 1812

Napoleon's invasion of Russia is one of the most dramatic events in history. It occupied only six months, June to December 1812, and during that period nearly half a million men died. At the start Napoleon was at the height of his power. At the end he faced the destruction of his empire. He had lost the greatest campaign he ever attempted and the largest army he ever commanded. Why did he invade Russia? Why, in spirt of his early successes and the capture of moscow, did he fail?