[NeedMoreTea]

I thought I recognised the name on the main gallery site. Witold Pilecki[0] was an astonishingly brave Polish cavalry officer who volunteered to be incarcerated in Auschwitz[1]. They wanted to get intelligence out and if possible organise resistance in the camp. He escaped after over 2 years, and volunteered to fight during the Warsaw uprising.

Edit: He survived that but was executed after the war by the Poles after a show trial and conviction for espionage. He'd been collecting evidence of Soviet atrocities in Poland.

[0] https://facesofauschwitz.com/gallery/witold-pilecki/ [1] https://en.wikipedia.org/wiki/Witold_Pilecki#Auschwitz