Kastuś Kalinoŭski Battalion

The Kastuś Kalinoŭski Battalion (Ukrainian: Батальйон імені Кастуся Калиновського, Belarusian: Батальён імя Кастуся Каліноўскага) is a group of Belarusian volunteers, which was formed to defend Ukraine against the 2022 Russian invasion.
It is named after Kastus Kalinowski — one of the leaders of the national liberation uprising of Belarusians, Poles, Lithuanians and Ukrainians, the national hero of Belarus.
As of March 2022, it was reported that more than a thousand Belarusians have joined the unit.