It has actively collaborated with the Nazis to fight the Red Army, and his commandos committed numerous anti-Semitic massacres, as in Lviv June 25, 1941, together with the Einsatzgruppen: but, despite all its brands goodwill, Hitler finally refused to Ukrainian nationalists their country to be anything more than a German colony, Stepan Bandera protests and he is incarcerated, while some of his fighters, after the dissolution of his troops, join the Nazis and participate in the Babi Yar massacre in September 1941.