Liquidation
On July 20, 1943, SS-Obergruppenführer Wilhelm Koppe ordered the complex to be liquidated and dismantled. The majority of prisoners were either executed or were transferred to other concentration camps, such as Dachau, Gross-Rosen and Ravensbrück. Between July 28 and July 31, four major railway transports left Warsaw, containing some 12,300 prisoners. Only a small group of several hundred inmates, mostly Jews from the other occupied countries, have been left in Pawiak and Gęsiówka to dig up and burn the bodies that were buried under the blown-up buildings of the ghetto. The camp's documentation was burnt and many of its structures and facalities were mined for demolition.
On August 5, 1944, during the first days of Warsaw Uprising, an assault group of Armia Krajowa (AK) stormed the Gęsiówka sub-camp using a captured German tank and set free the remaining 360 men and women before they were forced to withdraw. On August 21, after a failed insurgent attack on Pawiak, the Germans executed almost all (except only seven) of the remaining inmates and the prison was blown up.
Read more about this topic: Warsaw Concentration Camp