The 120,000 strong French Army of Châlons, commanded by Marshal Patrice de Mac-Mahon and accompanied by Napoleon III, was attempting to lift the Siege of Metz, only to be caught by the Prussian Meuse Army and defeated at the Battle of Beaumont. The Meuse Army and the Prussian Third Army, commanded by Field-Marshal Helmuth von Moltke and accompanied by Prussian King Wilhelm I and Prussian Chancellor Otto von Bismarck, cornered MacMahon's army at Sedan in a massive encirclement battle. Marshal MacMahon was wounded during the attacks and command passed to General Auguste-Alexandre Ducrot.