He forwarded his report about the camp to Polish resistance headquarters in Warsaw through the underground network known as Związek Organizacji Wojskowej which he organized inside Auschwitz.[22] Pilecki hoped that either the Allies would drop weapons for the Armia Krajowa (AK) to organize an assault on the camp from the outside, or bring in the Polish 1st Independent Parachute Brigade troops to liberate it. A spectacular escape took place on 20 June 1942, when Kazimierz Piechowski (prisoner no.