Promoted general of brigade in 1803, Roguet fought at Elchingen and Scharnitz in 1805. He led his brigade at Jena and Magdeburg in 1806 and at Eylau and Guttstadt in 1807. He led a Young Guard brigade at Aspern-Essling and Wagram. He was in Spain in 1808 and 1810–1811. In the latter year he received promotion to general of division. In 1812 he directed the Young Guard at Battle of Krasnoi. In 1813 he led the Old Guard division at Lützen and Bautzen and a Young Guard division at Dresden and Leipzig. In 1814 he led a Young Guard division at Hoogstraten and Courtrai. In 1815 he led Imperial Guard troops at Ligny and Waterloo. After a period of retirement, he led a French division that intervened in the Belgian Revolution. His surname is one of the names inscribed under the Arc de Triomphe, on Column 26.