==Background=====Strategic context===After defeating the Prussian army in the autumn of 1806, Emperor Napoleon entered partitioned Poland to confront the Russian army, which had been preparing to support the Prussians until their sudden defeat. ###>== Situation ==Après la conquête de la Prusse en automne 1806, Napoléon entre en Pologne pour affronter l'armée russe, disposée à soutenir les Prussiens jusqu'à leur défaite soudaine.