At the outbreak of World War II , Grodecki was already fifty years old but nonetheless an officer of the Polish army reserves . During the mobilization of the first days of the war he left Kraków in order to join his unit . As a result he escaped the fate of many of his academic colleagues from the Jagiellonian University , who were arrested by the Germans during the Sonderaktion Krakau , and most of whom later perished in Nazi concentration camps
Sonderaktion Krakau
Sonderaktion Krakau
Roman Grodecki