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War & conflict
18 June 1815 · Waterloo
Napoleon's army is defeated at Waterloo by Wellington's allied army and Blücher's Prussian forces. The battle ends his return to power during the Hundred Days. Napoleon abdicates again and is exiled to Saint Helena. The victory consolidates the European post-war order negotiated at the Congress of Vienna.
Counts differ in how they treat missing soldiers and those who later died of their wounds.
Historians disagree on exact figures; the range shown reflects the scholarly literature.