sentences:  Częstochowa was a city-county ("Stadkreis Tschenstochau"), part of the "Radom District" of the General Government.The city was located near the border with Upper Silesia Province, and in its area operated units of the Home Army and National Armed Forces ("NSZ").On April 20, 1943, a "NZS" unit attacked the local office of the Bank Emisyjny w Polsce.