Battle of the Katzbach

The Battle of the Katzbach on 26 August 1813, was a major battle of the Napoleonic Wars between the forces of the First French Empire under Marshal MacDonald and a Russo-Prussian army of the Sixth Coalition under Prussian Marshal Graf von Blücher. It occurred during a heavy thunderstorm at the Katzbach river between Wahlstatt and Liegnitz in the Prussian province of Silesia. Taking place the same day as the Battle of Dresden, it resulted in a Coalition victory, with the French retreating to Saxony.

Source: Wikipedia