The Volunteer: One Man, an Underground Army, and the Secret Mission to Destroy Auschwitz

To uncover the fate of the thousands being interred at a mysterious Nazi camp on the border of the Reich, a thirty-nine-year-old Polish resistance fighter named Witold Pilecki volunteered for an audacious mission: assume a fake identity, intentionally get captured and sent to the new camp, and then report back to the underground on what had happened to his compatriots there. But gathering information was not his only task: he was to execute an attack from inside—where the Germans would least expect it.