Complex sentence: On his return to Russia Bestuzhev served for two years without any salary as chief gentleman of the Bedchamber at the court of Anne of Courland, and in 1721 succeeded Vasily Dolgorukov as Russian minister at Copenhagen.
Split into simpler sentences: On his return to Russia, Bestuzhev served for two years without any salary as chief gentleman of the Bedchamber at the court of Anne of Courland. In 1721, he succeeded Vasily Dolgorukov as Russian minister at Copenhagen.