Complex sentence: Count Ivan Vasilievich Gudovich (1741-1820) was a Ukrainian-born commander in the Russian imperial service, whose exploits included the capture of Khadjibey (1789) and the conquest of maritime Dagestan (1807).
Split into simpler sentences: Count Ivan Vasilievich Gudovich (1741-1820) was a Russian noble and military leader of Ukrainian descent. His exploits included the capture of Khadjibey (1789) and the conquest of maritime Dagestan (1807).