Heydel considered himself a nationalist and was sympathetic to the National Democratic movement and in the years 1930–1931 he led the National club in Cracow.[2] He was critical of Sanation and due to this he was removed from the economics department at the Jagiellonian University and proceeded to become a director of the economics institute at the Academy of Learning.
Second World War
Heydel was arrested on 6 November 1939 as a part of the operations of Sonderaktion Krakau and with other academics he was placed Sachsenhausen concentration camp. Due to international pressure Heydel was released from the camp together with other academics which reached 40 years of age. After his release he got involved in the Union of Armed Struggle and on 23 of January 1941 he was arrested by the Gestapo.
After refusing to sign the Volksliste he was moved to Auschwitz where he was murdered in a mass-shooting.[1]
^ abcParyna, Wojciech (26 April 2017). "Adam Heydel – polski "austriak" w metodologicznym boju" [Adam Heydel – a Polish 'Austrian' in the methodological battle] (in Polish). Po kilku godzinach zginął razem z innymi od salwy plutonu egzekucyjnego w żwirowni koło drutów, tuż za terenem obozu Auschwitz. [After a few hours, he was killed along with others by a salvo of the firing squad in a gravel pit near the wires, just outside the Auschwitz camp grounds.]
^ ab"Czy wiesz kto to jest?". Warszawa: Wydawnictwa Artystyczne i Filmowe : na zam. Zrzeszenia Księgarstwa. 1983.