Napolean was a great general however, there may be evidence that after Russia he suffered from problems. He left command at a crucial period in the Battle of Waterloo to General Nee (think that is how you spell it) his second in command who committed a brave cavalry charge which failed and then the battle went down-hill from there. The force that left Russia after that campaign was not the same force that went there, and Napolean and General Nee were not the same men either.