The corps was rebuilt as a French formation in the spring of 1813. Under Marshal Marmont, the corps fought at the Battle of Lützen on 2 May. The 20th Division under General Compans and the 21st Division under General Jean Pierre François Bonet participated in the engagement. On 20 and 21 May, Marmont led the VI Corps at the Battle of Bautzen. On this occasion, General Friedrichs' 22nd Division joined the other two divisions in the fighting. After the summer armistice expired, the corps fought at the Battle of Dresden on 26 and 27 August. Lagrange replaced Bonet as commander of the 21st Division. During the Battle of Leipzig, Marmont defended the northern sector against Marshal Gebhard Leberecht von Blücher's Prussian forces. After bitter fighting on 16 October, the VI Corps was defeated when the Prussians launched a massed cavalry charge. Two days later, the Württemberger cavalry belonging to the corps defected to the Allies. The formation fought against the Bavarians at the Battle of Hanau on 30 and 31 October.