Use simpler wording: However, he was defeated at the Battle of Waterloo in June 1815. <SEP> Napoleon was defeated at the Battle of Waterloo by the British under Duke of Wellington and Prussians on June 18 1815, which was his last battle.
Napoleon's forces fought two Coalition armies, commanded by the British Duke of Wellington and the Prussian Prince Blu ̈ cher, at the Battle of Waterloo on 18 June 1815.