sentences:  He was then present at the sieges of Dresden, Hamburg, and Harburg (1813-1814).In the 1820s, he served in the Caucasus and took part in the wars against Turkey and Persia.He played a prominent role in the storming of Erivan, a Persian-held city of Armenia, in 1827 during the Russo-Persian War (1826-1828), and was elevated to the rank of lieutenant general in 1829.