The Hundred Days: Napoleon's Return

On March 20, 1815, Napoleon Bonaparte walked back into the Tuileries Palace in Paris without firing a shot.^¹ He'd escaped Elba—the island where the Allied powers had exiled him ten months earlier—and marched north with a loyal following that swelled as he moved through France.^¹ King Louis XVIII fled at the news, and Napoleon reclaimed his throne with a speed that bewildered Europe's crowned heads.^¹ This improbable return lasted exactly 100 days, a window so specific and dramatic it became the shorthand for the entire episode.^¹ The period showcased Napoleon at his organizational best: he reformed the administrative apparatus, negotiated with foreign powers, and attempted to present himself as a reformed liberalizer rather than the continental tyrant Europe remembered.^¹

The escape itself was audacious enough to seem almost theatrical.^¹ Elba, off the Italian coast, held Napoleon under the nominal sovereignty of the Kingdom of Tuscany with a garrison of about 1,200 men.^¹ The Bourbons had stripped him of power but left him with a pension and the title of "Emperor of Elba"—a sardonic acknowledgment that they had no idea how to genuinely neutralize him.^¹ On the night of March 1, 1815, he boarded a small flotilla with his remaining loyalists and sailed across the Mediterranean.^¹ He landed at Golfe-Juan on March 1 and began his northward march through the Provence region.^¹ Remarkably, soldiers sent to intercept him at Grenoble switched sides en masse when they saw him in person.^¹ By the time he reached Lyon, his force had grown to roughly 7,000 men.^¹ The Bourbons, it turned out, had restored far too little and learned nothing.^¹

Napoleon's second empire was built partly on a shrewder political reading than his first.^¹ He knew the Congress of Vienna had left Europe's various peoples unsatisfied—Poland remained partitioned, Belgium and the Dutch Netherlands were artificially joined, and Italian and German nationalism festered below the surface.^¹ He positioned himself as the defender of French nationalism against foreign meddling and promised constitutional governance, hoping to fracture the Allied consensus that had brought him down.^¹ He even published a revised administrative code that appeared more liberal than before.^¹ But this calculated restraint couldn't overcome the fundamental arithmetic: every major power from Britain to Russia to Austria saw him as a threat that had to be extinguished once and for all.^¹ Wellington's Anglo-Dutch-German force and Blücher's Prussians marched toward him.^¹ The Belgian campaign was his last throw of the dice.

Waterloo on June 18, 1815, sealed the outcome. The battle was messy, close-run, and ultimately decisive against him.^¹ Wellington's defensive strategy held the ridge; Blücher's arrival on the flank in the afternoon broke whatever hope remained.^¹ French casualties mounted past 25,000. Napoleon tried to consolidate his position, but the political consensus at home had crumbled—the chambers wouldn't support him any longer, and defections among his own marshals accelerated.^¹ By June 22, he abdicated a second time. This time, the Allies exiled him to St. Helena, a remote island in the South Atlantic over 5,000 miles from Europe, effectively removing him from the historical stage.^¹ The Hundred Days had been a masterclass in political audacity and a final advertisement of his remaining magnetism—but it had also proved he was ultimately hollow without institutional power.^¹ France returned to the Bourbons, and Europe settled into a conservative equilibrium that would hold, uneasily, for the next generation.^¹