The transport to Łosice in the district of Warszawa (Warschau) in the General Government (Generalgouvernement) left Kalisz on December 13, and was the only transport to depart that day. The number of deportees on this transport remains unknown; however, the total number of Jews deported from Kalisz on ten transports between December 2 and 14, totaled 15,862.
The deportees were assembled in a market hall located in Rynek Dekerta (Dekert's Marketplace), which belonged to two Jewish merchants, brothers Abram and Henoch Szrajer. During the period between December 2 and 14, the majority of the Jewish population of Kalisz was assembled in the market hall.
These deportations were organized by the mayor of Kalisz Walter Grabowski, Obersturmführer SS Telo Klause, and several Gestapo men. According to a report on Nahplan I deportations in the Warthegau, the trains were guarded by seven policemen and thirty Selbstschutz (paramilitary Nazi group of ethnic Germans subordinated to the local SS and police)....