 Complete the following phrase:  From 19 June 1812 to 20 August, he was the chief of the Sevastopol Infantry Regiment, and then became adjutant to General Mikhail Kutuzov, at whose side he remained in the Battle of Borodino. From October, he commanded the vanguard of Matvei Platovs Don Cossacks Corps. On 14 March 1813 he was promoted to major general, with seniority dating to 7 September. In the War of the Sixth Coalition, he headed a cavalry detachment, which took part in the Battle of Hanau and the 