General Zod
Banned
Your challenge, should you choose to accept it, is to devise a plausible way by which Napoleon is able to accomplish a clear, decisive victory over Wellington and the British army, but subsequently suffers just as complete a defeat at the hands of Blucher and the Prussian Army, in such a way that it is crystal-clear to everyone in Europe that the merit of defeating the French Ogre is Prussia's and Prussia's alone.