Yuhym Bozhko has organized in 1918 the volunteer "Zaporozhian Sich" Division which became a part of the armee of the People’s Republic of Ukraine and was fighting with Russian Red Armee.
Russian link in Wiki:
https://ru.wikipedia.org/wiki/%D0%91...84%D0%B8%D0%BC
Ukrainian link in Wiki:
https://uk.wikipedia.org/wiki/%D0%91...85%D0%B8%D0%BC