Commanding 3 Divisions in Wallachia, he was sent south for operations against Turkey in late August 1811. In 1812 he commanded the 3rd Corps of Barclay de Tolly's 1st Army of the West. He fought at Smolensk 17 August, then with Württemberg defeated Michel Ney at Valutina Gora (Lubino) on the 19th. Stationed on the left flank at Borodino on 7 September, he was gravely wounded in the chest leading the Pavlov Grenadiers against Utitsa and died three weeks later.