March 20
Napoleon Enters Paris to Begin Hundred Days
Napoleon Bonaparte reclaimed the French throne on March 20, 1815, after a swift march from the Mediterranean coast that turned royal troops into his supporters and forced the Bourbon king into flight.
Summary
Following his abdication in 1814 and exile to Elba, Napoleon Bonaparte escaped in late February 1815 with a small force and landed near Cannes on March 1. As he marched north, French troops sent to oppose him defected en masse, swelling his ranks dramatically. King Louis XVIII fled the capital on March 13. On March 20, Napoleon arrived in Paris amid jubilant crowds and reclaimed power, launching the period known as the Hundred Days. He immediately began reorganizing the government and army while promising constitutional reforms to broaden support. European powers, already gathered at the Congress of Vienna, swiftly formed a new coalition against him.
Context
Following his defeat in the War of the Sixth Coalition, Napoleon abdicated in April 1814 and accepted exile on the island of Elba under the terms of the Treaty of Fontainebleau. The victorious Allied powers restored the Bourbon monarchy, placing Louis XVIII on the throne and initiating a period of conservative reaction that included the return of émigré nobles and the partial reversal of revolutionary land reforms. While the Congress of Vienna convened to redraw the map of Europe and contain French influence, discontent simmered in France over economic hardship, the demobilization of veterans, and the new regime's perceived favoritism toward the old aristocracy.
What Happened
On February 26, 1815, Napoleon escaped Elba with roughly 1,000 men and landed near Cannes on March 1. As his small force advanced northward along the Route Napoléon, regular army units dispatched to intercept him instead rallied to his banner, including the dramatic defection of Marshal Michel Ney at Lons-le-Saulnier. King Louis XVIII, facing collapsing loyalty in the capital, departed Paris for Ghent on March 13. One week later, on March 20, Napoleon entered the city through the Barrière de Fontainebleau to the cheers of crowds and soldiers, proceeding directly to the Tuileries Palace where he resumed imperial authority.
Aftermath
Napoleon quickly convened a new government and tasked liberal thinker Benjamin Constant with drafting constitutional amendments intended to attract broader support. On March 25 the four major Allied powers—Austria, Britain, Prussia, and Russia—signed a fresh treaty committing each to field 150,000 men against him, formalizing the Seventh Coalition. French forces under Napoleon moved into Belgium in June, only to suffer decisive defeat at Waterloo on June 18, prompting his second abdication four days later.
Legacy
The Hundred Days confirmed the final collapse of Napoleonic rule and led to his permanent exile on Saint Helena. The second Bourbon restoration solidified the principle of monarchical legitimacy that guided the post-1815 European settlement, while the Congress of Vienna's territorial rearrangements and balance-of-power system shaped continental diplomacy for decades. Historians view the episode as both a testament to Napoleon's enduring personal appeal and a catalyst for the conservative reaction that defined the early nineteenth century.
Why It Matters
The return triggered the final coalition war that ended at Waterloo in June, leading to Napoleon's second abdication and permanent exile on Saint Helena. It reshaped the post-Napoleonic European order through the Congress of Vienna settlements and reinforced the principle of monarchical restoration across the continent.
Related Questions
Why did French troops switch sides so readily during Napoleon's march?
Many soldiers remained loyal to Napoleon personally and resented the Bourbon restoration's policies toward veterans and revolutionary gains.
What constitutional changes did Napoleon promise upon his return?
He accepted liberal revisions drafted by Benjamin Constant that included greater parliamentary powers and direct elections to broaden his political base.
How long did the Hundred Days actually last?
The period from Napoleon's arrival in Paris on March 20 until Louis XVIII's restoration on July 8 spanned 110 days.
What role did the Congress of Vienna play in the response to Napoleon's return?
The gathering of European powers declared Napoleon an outlaw and quickly organized the Seventh Coalition to restore the pre-revolutionary order.
Where did Louis XVIII go after fleeing Paris?
The king sought refuge in Ghent, in what is now Belgium, until Napoleon's defeat allowed his return.
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Sources
- Hundred Days | Napoleon, Waterloo, Reforms, Encyclopædia Britannica. Accessed 2026-07-09.