In March 1815, as Napoleon regained power in France, a new Coalition was formed at the Congress of Vienna, the aim of which was to put Bonaparte out of harm's way definitively.
Without waiting for the offensive of the Allies made up of the British, the Germans, the Dutch and the Prussians, Napoleon, commanding the new Army of the North, marched to face them. On June 18, 1815, the famous Battle of Waterloo took place in Belgium. The fight lasts from morning until evening and pits 76,600 French soldiers against 130,000 Allied soldiers. It is a victory for the new Coalition which defeats Napoleon thanks to the reinforcements of the Prussians. Bonaparte, cornered, at first wishes to die on the battlefield, but finally decides to flee with Marshal Soult.
With this final defeat, the Empire comes to a definite end. Napoleon abdicated for the last time on June 22, in Paris. He would be exiled to Saint Helena.