Battle of Sedan
1870 CE.
Shown on the map at 49.700°, 4.944°.
The Battle of Sedan, also known as the First Battle of Sedan, was fought during the Franco-Prussian War from 1 to 2 September 1870. Resulting in the capture of Emperor Napoleon III and over a hundred thousand troops, it effectively decided the war in favour of Prussia and its allies; however, fighting continued under a new French government. The 130,000-strong French Army of Châlons, commanded by Marshal Patrice de MacMahon and accompanied by Napoleon III, was attempting to lift the siege of Metz, only to be caught by the Prussian Fourth Army and defeated at the Battle of Beaumont on 30 August. Commanded by Generalfeldmarschall Helmuth von Moltke and accompanied by Prussian King Wilhelm I and Prussian Chancellor Otto von Bismarck, the Fourth Army and the Prussian Third Army encircled MacMahon's army at Sedan in a battle of annihilation.
Text from the Wikipedia article Battle of Sedan, licensed CC BY-SA 4.0.