The famous battle fought in 1815 was the Battle of Waterloo. This significant battle took place on June 18, 1815, in present-day Belgium, marking a pivotal moment in European history. It was fought between the French army, led by Emperor Napoleon Bonaparte, and an allied army commanded by the Duke of Wellington and Prussian General Gebhard Leberecht von Blücher. The defeat of Napoleon at Waterloo ended his rule and led to his exile to the island of Saint Helena. This battle symbolized the decline of French imperial ambitions and contributed to the reshaping of the European political landscape.