Nachtigall was an intelligence and diversion group of Abwehr,[1] but according to other historians a Security Police unit, composed almost exclusively from members of the OUN(b), who were transported from Vinnytsia to Neuhammer on August 13, 1941 and disarmed at gunpoint due to political disagreement with the German leadership.[2] Historian Frank Golczewski says the Battalion fought against partisans and participated in the Jewish genocide in Belarus.[3] According to historian John-Paul Himka no one has specifically studied the activities of Schuma 201 in relation to the destruction of the Jewish population.