The significant battle in 1815 that marked the end of the Napoleonic Wars was the Battle of Waterloo. Fought on June 18, 1815, near Waterloo in present-day Belgium, this pivotal clash saw the forces of the Seventh Coalition, led by the Duke of Wellington and Prussian Field Marshal Gebhard Leberecht von Blücher, face off against Napoleon Bonaparte's French army. Napoleon's defeat ended his rule and led to his exile to Saint Helena. The battle effectively transformed the political landscape of Europe, establishing a balance of power and leading to a period of relative peace, known as the Concert of Europe.