Siege of Torgau
1813 CE.
Shown on the map at 51.560°, 13.006°.
The siege of Torgau (18 October 1813 – 10 January 1814) was a siege in the War of the Sixth Coalition. The French-held fortress on the Elbe was besieged by Prussian troops and forced to surrender.
Text from the Wikipedia article Siege of Torgau, licensed CC BY-SA 4.0.