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When did the Battle of Waterloo take place?

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Historical battle map showing troop positions at the Battle of Waterloo on June 18, 1815, near Brussels, Belgium. Red lines represent Anglo-Dutch infantry and cavalry under Wellington, positioned north of French forces. Blue lines show French infantry and cavalry under Napoleon, with both armies facing each other across a central road. Key locations like Chateau de Goumont (Hougoumont) and Plancenoit are labeled, and an inset map highlights the location within present-day Belgium and Europe. — Battle of Waterloo Battle of Waterloo, June 18, 1815.

The Battle of Waterloo took place on June 18, 1815.12

This decisive conflict occurred during the Hundred Days of Napoleon’s restoration and marked his final defeat, effectively ending 23 years of recurrent warfare between France and the other powers of Europe. The battle was fought near the village of Waterloo, located south of Brussels, where the duke of Wellington’s allied army and the Prussian forces commanded by Gebhard Leberecht von Blücher defeated Napoleon's troops.21