Complex sentence: After the battle, Wellington wanders among the piles of dead, lamenting the cost of victory, while Napoleon, who had declared that he would die with his men, but was dragged by his marshals from the field, departs in a carriage for Paris.
Split into simpler sentences: After the battle, Wellington wanders among the piles of dead, lamenting the cost of victory. At the same time Napoleon, who had declared that he would die with his men, is dragged by his marshals from the field and later departs in a carriage for Paris.