additional formation of Schutzpolizei arrived in Białystok from the General Government. It was led by SS-Hauptsturmführer Wolfgang Birkner, veteran of Einsatzgruppe IV from the Polish Campaign of 1939. The relief unit, called Kommando Bialystok, was sent in by SS-Obersturmbannfuhrer Eberhard Schöngarth on orders from the Reich Security Main Office (RSHA), due to reports of Soviet guerrilla activity in the area with Jews being of course immediately suspected of helping them out. On 10 July 1941, Schaper's unit was split into smaller Einsatzkommandos due to requirements of Operation Barbarossa. In addition to mass shootings, Einsatzgruppe B engaged in public hangings used as a terror tactic on the local population. An Einsatzgruppe B report, dated 9 October 1941, described one such hanging. Due to suspected partisan activity in the area around the settlement of Demidov, all males aged fifteen to fifty-five in Demidov were detained in a camp for screening. The screening produced seventeen people identified as 'partisans' and 'communists'. Thereafter, 400 local residents were assembled to watch the hanging of five members of the group; the rest were shot. On 14 November 1941, Nebe told Berlin that, up until then, 45,000 persons had been eliminated. A further report, dated 15 December 1942, established that the Einsatzgruppe B had shot a total of 134,298 people. After 1943, the mass killings of Einsatzgruppe B diminished, and the unit was decommissioned in August 1944. Commanders SS-Gruppenführer und Generalmajor der Polizei Arthur Nebe (June–November 1941) SS-Brigadeführer und Generalmajor der Polizei Erich Naumann (November 1941 – March 1943) SS-Standartenführer Horst Böhme (12 March–28 August 1943) SS-Oberführer und Oberst der Polizei Erich Ehrlinger (28 August 1943 – April 1944) SS-Oberführer und Oberst der Polizei Heinrich Seetzen (28 April–August 1944) SS-Standartenführer Horst Böhme (12 August 1944) Around 5 July 1941, Nebe consolidated Einsatzgruppe B near Minsk, establishing a headquarters and remaining there for some two months. The Gruppenführer determined that Sonderkommando 7a and Sonderkommando 7b and the Vorkommando Moskau would follow the Army Group Center, while Einsatzkommandos 8 and 9 clean up to the sides of the spearhead. In compliance, Einsatzkommando 8 reached Bialystok on 1 July, passed through Słonim and Baranowicze, and began systematic mass killing operations in modern-day southern Belarus (eastern Poland before World War II). On 5 August, Nebe moved his Einsatzgruppen command to Smolensk, where the Vorkommando Moskau was concentrated. On 6 August, Einsatzkommando 8 reached Minsk, remaining there until 9 September 1941. From