In the summer of 1644, an imperial Bavarian army led by generals Franz von Mercy and Johann von Werth recaptured city. Subsequently, this led to the Battle of Freiburg. This battle featured the imperial Bavarian army against the French-Weimarian troops led by marshals Turenne and Enghien. At the end of the multi-day conflict, there was no winners but only losers, as commented by Werth: "For 22 years, I have been used to blood-craft, I have never attended such a more bloody meeting."