HistoryData
war1815

1815 battle during the War of the Seventh Coalition

June 18, 1815

Napoleon's final defeat at Waterloo ended the Napoleonic Wars, precipitated his second abdication, and ushered in decades of relative European peace known as the Pax Britannica.

Quick Facts

Year
1815
Category
war

Key Facts

Date
18 June 1815
Prussian reinforcements
50,000 troops arrived during battle
Napoleon's abdication
4 days after the battle
Coalition entry into Paris
7 July 1815
Napoleonic Wars ranking
Second-bloodiest single-day battle after Borodino
Wellington's verdict
"The nearest-run thing you ever saw in your life"

By the Numbers

18
Date
50,000
Prussian reinforcements
4
Napoleon's abdication
7
Coalition entry into Paris

Location

Map of Waterloo, BelgiumMap of Waterloo, BelgiumWaterloo, Belgium

Cause → Event → Consequence

Cause

Following Napoleon's return to power in March 1815 during the Hundred Days, the Seventh Coalition mobilised against him. Napoleon sought to neutralise Wellington's Anglo-allied army and Blücher's Prussians before they could unite. After defeating the Prussians at Ligny on 16 June and contesting Quatre Bras, he pursued both armies northward, forcing a decisive confrontation near Waterloo.

Event

On 18 June 1815, Napoleon's French Imperial Army launched repeated assaults against Wellington's Anglo-allied force positioned on the Mont-Saint-Jean escarpment. Throughout the afternoon, Wellington's troops held firm. Arriving Prussian forces attacked the French right flank, and when Napoleon committed his elite Imperial Guard in a final assault, it was repulsed. The French army collapsed into a rout as Prussian and allied pressure converged.

Consequence

The defeat ended the Napoleonic Wars and Napoleon's Hundred Days. He abdicated four days later, and coalition forces entered Paris on 7 July 1815, concluding the First French Empire. The battle set a historical boundary between the era of serial European wars and a prolonged period of relative continental peace. The phrase 'meeting one's Waterloo' entered popular culture as a metaphor for catastrophic defeat.

Belligerents & Mobilization Analysis

Side A

2 belligerents

Anglo-allied army (UK, Netherlands, Hanover, Brunswick, Nassau)Prussian Army (three corps)
Peak Mobilized Forces~50K
Forces vs Casualties ratio
0Mobilized
Key Commanders

Arthur Wellesley, Duke of Wellington, Field Marshal Blücher.

Side B

1 belligerent

French Imperial Army
Key Commanders

Napoleon I.

Outcome
Decisive Seventh Coalition victory; French Imperial Army routed; Napoleon abdicated four days later

Timeline Context

Timeline around 18151815181218131814181618171818Ottoman battle in Hejaz, 19th century1815 treaties between the United States and Algeria1815 eruption of Mount Tambora — catastrophic volcanic eruption in present-day IndonesiaUnification of Italy — creation of the politically and administratively integrated nation of Italy (1815–1871)Congress of Vienna — conference of ambassadors of European states (September/November 1814 to June 1815)Capture of HMS CyaneBattle of the Neapolitan WarSecond Serbian Uprising — 1815–1817 revolt in Serbia against the Ottoman Empirebattle-of-waterloo-1815