Throughout the 1813 campaign, Doumerc continued to lead the 3rd Heavy Cavalry Division. He was present at the Battle of Lützen on 2 May and at the Battle of Bautzen on 20 and 21 May. On 26 and 27 August, he commanded his division in Marie Victor de Fay, marquis de Latour-Maubourg's I Cavalry Corps at the Battle of Dresden. The division included the 4th and 7th Cuirassiers in Charles Lalaing d'Audenarde's brigade and the 7th, 23rd, 28th, and 30th Dragoon Regiments in Marie Antoine de Reiset's brigade, as well as two horse artillery batteries. Directed by Marshal Joachim Murat, the French cavalry fell upon the Allied left wing, which was isolated from the center and right by a rain-flooded stream. Unable to effectively defend itself because of wet powder, Ignaz Gyulai's Austrian corps was severely mauled by the rampaging French horsemen, backed by infantry and artillery. Mesko, the same general defeated in 1809, saw his division overrun before being taken prisoner by a trooper from Doumerc's 23rd Dragoons. A number of Austrian battalions were routed or forced to surrender. Altogether, 13,000 prisoners fell into French hands in this sector.