Napoleon escaped from the island of Elba and returned to France to retake power. The French were happy to see the return of their hero, particularly as the king, Louis XVIII, who replaced Napoleon, was not very popular. However, the neighbouring countries declared war on France again and Napoleon was defeated at Waterloo, in Belgium, on 18 June 1815. He was forced to abdicate for a second time. He was left on ST. Helena island alone until he died