Complex sentence: Promoted to General of Infantry in 1810, Dokhturov fought in the Battle of Smolensk and at Borodino he commanded in the center of the Russian line and after Pyotr Bagration was mortally wounded, he commanded the left flank.
Split into simpler sentences: Promoted to General of Infantry in 1810, Dokhturov fought in the Battle of Smolensk. In the Borodino he commanded in the center of the Russian line and after Pyotr Bagration was mortally wounded, he commanded the left flank.