On an unseasonably wet and chilly summer afternoon in 1944, Warsaw was in a state of nervous readiness. For days, young men and women carrying mysterious packages had been seen on the streets. “Tram-cars were occupied with young boys, who unconcernedly occupied even the front platform, reserved ‘Nur Für Deutsche,' without the Germans present doing anything about it,” eyewitness Stefan Korbonski recalled. “I noticed that one of the boys carried a rucksack from which protruded something resembling a walking stick, wrapped in newspaper and tied with a piece of string. Anyone could see it was the end of a rifle.”