... the army at a very early age. He became chef-de-bataillon at nineteen, colonel at twenty-one, general of brigade at twenty-three, and Viceroy of Italy at twenty-five. He soon proved himself one of Napoleon 's ablest generals. At twenty-eight he commanded the army of Italy, and at thirty-one gained great glory in the Russian campaign, at the head of the fourth corps d'armee. Gouvion-Saint-Cyr enter...