Lithuanian–Polish–Ukrainian Brigade

Lithuanian–Polish–Ukrainian Brigade "TLATAS" (LITPOLUKRBRIG; Lithuanian: Lietuvos-Lenkijos-Ukrainos brigada, LITPOLUKRBRIG; Ukrainian: Литовсько-Польсько-Українська Бригада, ЛИТПОЛУКРБРИГ; Polish: Brygada litewsko-polsko-ukraińska) is a multinational brigade consisting of units from the Lithuanian, Polish and Ukrainian armies. They coincide with the countries of the Lublin Triangle, but other countries are free to join the trilateral agreement.

Source: Wikipedia — Lithuanian–Polish–Ukrainian Brigade (CC BY-SA 4.0)