White-red-white flag with the Columns of Gediminas in the shape of the Tryzub of the Belarusian diaspora in Ukraine, which is also used by the Kastuś Kalinoŭski Regiment: https://suspilne.media/346318-biloruskij-dobrovolcij-korpus-zavivsa-v-ukraini-so-vidomo/
File:White-red-white flag of the Belarusian diaspora in Ukraine.png
Belarusian diaspora in Ukraine