Roman-Taras Osypovych Shukhevych was a Ukrainian nationalist and a military leader of the nationalist Ukrainian Insurgent Army (UPA), which during the Second World War fought against the Soviet Union and to a lesser extent against Nazi Germany for Ukrainian independence. He collaborated with the Nazis from February 1941 to December 1942 as commanding officer of the Nachtigall Battalion in early 1941, and as a Hauptmann of the German Schutzmannschaft 201 auxiliary police battalion in late 1941 and 1942.