Napoleon was the commander of the French army.
Napoleon quickly defeated Prussia at the battles of Jena and Auerstedt , then marched the Grand Army deep into Eastern Europe and annihilated the Russians in June 1807 at the Battle of Friedland .	Prussia	Kingdom of Prussia	battles of Jena and Auerstedt	Battle of JenaAuerstedt	Grand Army	Grande Arme	Eastern Europe	Eastern Europe	Battle of Friedland	Battle of Friedland
