Schutzmannschaft-Brigade Siegling (also German: Schutzmänner-Brigade Siegling) was a Belarusian Auxiliary Police brigade formed by Nazi Germany in July 1944 in East Prussia, using six local volunteer battalions of Schutzmannschaft decimated in the Soviet counter-attack known as Operation Bagration. The six retreating units who joined Siegling included Bataillon 57 (ukrainische), Bataillon 60 (weißruthenische), Bataillon 61, 62, 63 (ukrainische), and Bataillon 64 (weißruthenische). Most members originated from the collaborationist Belarusian Home Defence (BKA). The total number of soldiers evacuated by the Nazis to East Prussia from across Belarus during the Soviet advance might have reached 10,000. They regrouped northeast of Warsaw in occupied Poland, under the command of SS-Obersturmbann