in the campaign “Suppression of UPA Resistance and Operation "Vistula" (1944–1951)”
The coordination of actions with the pro-Soviet government of Poland to destroy the Ukrainian underground: Operation "Vistula," "as a deportation action, was elaborated in detail and carried out by the Polish authorities," but its execution "was coordinated with the party-Soviet organs of power of the USSR" - the Soviet command transferred "from Lviv oblast one tank division and special NKVD units, and blocked the Ukrainian-Polish border with border troops"[1].