What is the time period after Britain defeated Napoleon ?
Pushed back , as he had been in Spain , from bastion to bastion , after the action on the Berezina , Napoleon had to fall back upon the frontiers of 1809 , and then — having refused the peace offered to him by Austria at the Congress of Prague ( 4 June–10 August 1813 ) , from a dread of losing Italy , where each of his victories had marked a stage in the accomplishment of his dream — on those of 1805 , despite Lützen and Bautzen , and on those of 1802 after his defeat at Leipzig , when Bernadotte – now Crown Prince of Sweden – turned upon him , General Moreau also joined the Allies , and longstanding allied nations , such as Saxony and Bavaria , forsook him as well .