Witold Pilecki, a resistance fighter in the Polish underground, was sent on a mission of great danger and crucial importance to the fight against the Nazis. Witold was tasked with the infiltration of a new camp, that there was scant intelligence on. That camp was Auschwitz. What Witold found there continues to be remembered today for its unimaginable horror, but at the time Witold's reports from inside the camp fell on deaf ears.

Pilecki's time in the camp was documented by Jack Fairweather in his book - The Volunteer. Jack tells Witold's story here.

Additional audio licensed by the Imperial War Museum.