Napoleon Returns to Paris — The Hundred Days Begin
Napoleon entered Paris in triumph after escaping from Elba, with troops sent to arrest him joining his march instead. King Louis XVIII fled the city without a shot being fired. Napoleon had marched from the south with just 1,000 men and gathered an army along the way.
The Hundred Days shocked Europe and forced the Allied powers to mobilize against Napoleon one final time, culminating in his defeat at Waterloo and permanent exile.
Outcome
Napoleon reclaims French throne; Waterloo campaign begins