Battle of Beaumont in the context of Constantin von Alvensleben

The 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, though 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. Marshal MacMahon was wounded during the attacks and command passed to General Auguste-Alexandre Ducrot, until assumed by General Emmanuel Félix de Wimpffen.

The Army of Châlons (French: Armée de Châlons) was a French military formation that fought during the Franco-Prussian War of 1870. Formed in the camp of Châlons on August 17, 1870, from elements of the Army of the Rhine which the formation was issued from, the Army of Châlons was engaged in combats of Beaumont and Sedan while disappearing during the capitulation of September 2, 1870.