Following the joint German-Soviet invasion of Poland, which started World War II in September 1939, Raczki was occupied by Germany. The Polish population was subjected to various crimes. In Raczki, the Germans arrested two Polish priests Czesław Żebrowski and Czesław Chmielewski, and then deported them to concentration camps. Both survived and were liberated in Dachau concentration camp in 1945. The village was heavily devastated during the war.