Jacquinot was wounded while leading a charge against a Swedish battalion at the Battle of Dennewitz on 6 September 1813. During the action, he led the 12th Light Cavalry Brigade which was made up of the 5th and 13th Chasseurs à Cheval Regiments. The brigade was part of Jean Thomas Guillaume Lorge's 5th Light Cavalry Division in Jean-Toussaint Arrighi de Casanova's III Cavalry Corps. At the Battle of Leipzig on 16–19 October he led the same brigade, to which was added the 10th Chasseurs à Cheval. He was promoted general of division on 26 October 1813.