After the German Socailsts invaded Poland, on September 1, 1939, the invaders began their Inteligenzaktion operation, also called the Flurbereiningung, the physical extermination of the Polish intellectuals, which included priests.
On April 6, 1940, the Geheime Staatspolizei, the Secret State Police, the GeStaPo, arrested Father Michał Piaszczyński, along with dozens of other priests in the area.
Shipped to Sachsenhausen extermination camp, Father Piaszczyński suffered starvation, exhaustion and exposure, but still practiced his Faith. One day, when the barracks leader denied bread to the Jews, Father Piaszczyński gave his piece of bread to a Jew named Kott, who was from Warsaw.
Father Piaszczyński perished on December 18, 1940.
VIVA CRISTO REY! Niech żyje Chrystus Król!