On the third of August 1644 the western slope of the Schönberg was the site of the first day of the Battle of Freiburg, that took place during the Thirty Years' War. Fighting between Bavarian and French troops continued on the 5 and 9 August on the Lorettoberg, directly opposite the eastern slope of the Schönberg. France's main goal was to regain control over the city of Freiburg, which the allied troops of the Weimar Republic had lost on 27 July to Bavarian troops after several weeks of siege. The French managed to conquer the district of Bohl on the western slopes of the Schönberg, although with heavy losses. The Bavarian troops retreated over the Schönberg into fortified positions on the Lorettoberg and were thus able to successfully hold the mountain and the city of Freiburg against the French enemy.