Hetmans of the Polish–Lithuanian Commonwealth
Hetmans of the Polish–Lithuanian Commonwealth (Belarusian: гетман; Lithuanian: etmonas; Ukrainian: гетьман) were the highest-ranking military officers, second only to the King, in the Polish–Lithuanian Commonwealth. The first Polish title of Grand Crown Hetman was created in 1505.
Source: Wikipedia — Hetmans of the Polish–Lithuanian Commonwealth (CC BY-SA 4.0)