National Security Corps

The PKB was created by the Department of the Internal Affairs of the Delegate's Office in 1940, mostly from members of the pre-war Polish police and volunteers. PKB carried out investigation and criminal intelligence duties as well as gathered reports of the Gestapo and Kripo in the General Government. It enforced the verdicts prepared by the Directorate of Civil Resistance and Directorate of Underground Resistance and passed by the Underground court.

A unit of PKB commanded by Henryk Iwański purportedly distinguished itself during the Warsaw Ghetto Uprising in 1943. However, according to the work of a Polish-Israeli research team (Dr. Dariusz Libionka and Dr. Laurence Weinbaum), much of what Henryk Iwański wrote should be relegated to the realm of confabulation or manipulation of the Communist secret police.