Complex sentence: Captain Michał Bohdanowicz was the original commander of the First Tatar Squadron; afterwards, the unit was lead, for a short time, by Captain Bazyli Marcisz, and Captain.
Split into simpler sentences: Captain Michał Bohdanowicz was the original commander of the First Tatar Squadron. Afterward, the unit was lead for a short time by Captain Bazyli Marcisz, and Captain.