The Battle of Teugen-Hausen or the Battle of Thann was fought on 19 April 1809 between the French III Corps led by Marshal Louis-Nicolas Davout and the Austrian III Armeekorps commanded by Prince Friedrich Franz Xaver of Hohenzollern-Hechingen. The French won a hard-fought victory over their opponents when the Austrians withdrew that evening. The fighting occurred during the War of the Fifth Coalition, part of the Napoleonic Wars. The site of the battle is a wooded height approximately halfway between the villages of Teugn and Hausen in Lower Bavaria, part of modern-day Germany.