Hetman of the Zaporizhian Cossacks
A Hetman of Zaporizhian Cossacks is a historical term that has multiple meanings. Officially the post was known as Hetman of the Zaporizhian Host (Old Ukrainian: Гетман Войска Єго Королевскои Милости Запорозкого, Hetman of His Royal Grace's Zaporozhian Host; Ukrainian: Гетьман Війська Запорозького, romanized: Hetman Viiska Zaporozkoho).
Source: Wikipedia — Hetman of the Zaporizhian Cossacks (CC BY-SA 4.0)