Waterloo From the capital of Belgium to the Battle of Waterloo, which shook the world in 1815, ten kilometers of battle began on June 17, smoke filled the valley of Waterloo, swords and swords, the bodies of 30,000 French soldiers filled the valley of Waterloo. The Allies also suffered defeat at this cost by Napoleon, who was exiled to St. Helens Island in the Atlantic Ocean and died.