The leader of the Anglo-Portuguese Army that defeated French forces during the Battle of Buçacoalso  defeated Napoleon during what battle?
Battle of Bussaco: The Battle of Buçaco (] ) or Bussaco, fought on 27 September 1810 during the Peninsular War in the Portuguese mountain range of Serra do Buçaco, resulted in the defeat of French forces by Lord Wellington's Anglo-Portuguese Army. Arthur Wellesley, 1st Duke of Wellington:  His defeat of Napoleon at the Battle of Waterloo in 1815 put him in the first rank of Britain's military heroes.
Battle of Waterloo