The Battle of Jena-Auerstedt was a critical engagement during the Napoleonic Wars. The French army fought against the Prussian forces near Jena and Auersted on October 14, 1806. It was another victory for the French Empire, led by Napoleon Bonaparte and a significant defeat for the Prussian army, following a quick occupation of Prussia. It led to the Treaty of Tilsit, which significantly decreased the territory of Prussia.



