During Napoleon's invasion of Russia, Kozietulski again distinguished himself as a skilled commander during the Battle of Maloyaroslavets of October 25, 1812, where he saved the life of Napoleon himself, by charging between Bonaparte and the assaulting Cossacks. His uniform, pierced with a lance and stained with blood, is preserved to this day in the Museum of the Polish Army in Warsaw. After recovering from his wounds he returned to active service and took part in all major battles of Napoleonic 1813 campaign in Saxony. He also took part in the Battle of Nations. In 1814 he was made the commander of the French 3rd Scout Regiment of the Imperial Guard () and fought in the Battle of Paris.