During the Napoleonic Wars, Dubreton served in Holland and Germany, becoming a general officer in 1811. Later he transferred to Spain where he won fame by leading the defenders during the Siege of Burgos, one of Wellington's rare setbacks. Promoted, he commanded a division at Dresden, Leipzig, and Hanau in the autumn of 1813. King Louis XVIII of France appointed him to several military posts and, in 1819, to the Chamber of Peers, a lawmaking body. Dubreton is one of the names inscribed under the Arc de Triomphe on Column 35.