The Wola massacre was the systematic killing of between 40,000 and 50,000 Poles in the Wola neighbourhood of the Polish capital city, Warsaw, by the German Waffen-SS, Ordnungpolizei, Sicherheitdienst and the SS-Sonderregiment Dirlewanger, which took place from 5 to 12 August 1944. The massacre was ordered by Heinrich Himmler, who directed to kill "anything that moves" to stop the Warsaw Uprising soon after it began.