Bulgarin was born into a noble Polish family near Minsk, Belarus (then Polish–Lithuanian Commonwealth). His father, one of Kosciuszko's associates, was exiled to Siberia for having assassinated a Russian general. Bulgarin was educated in a St. Petersburg military school, took part in the Battle of Friedland but was arrested for theft soon afterwards. While his regiment was stationed in Finland, Bulgarin deserted to Warsaw, but on the way was drafted to the Grande Armée. He fought under Napoleon's banners in the Peninsular War and the 1812 Lithuanian campaign. In 1812 Bulgarin was taken prisoner in Battle of Berezina and transported to Prussia. There is a 6-year lapse in his biography after that.