He was promoted to major general on 26 December 1812 and after the end of the battle of Paris to general on 27 March 1814. After returning to Russia, he was put in command of the 4th Dragoon Division. On 25 June 1825 he became the supreme commander and governor of the Caucasus. He was promoted to general of the cavalry in July 1828, during the Russo-Turkish War (1828-29). In 1829 he organised and led the first Russian scientific expedition to Mount Elbrus, for which he was made a member of the Russian Academy of Sciences.