In retribution for roundups as acts of Nazi terror, the Polish resistance carried out attacks on Nazi forces and prepared lists of Nazi leaders to be eliminated for their crimes against civilians. Nazi personnel responsible for organizing roundups, such as members of local unemployment offices, the SS, SD, and Nazi police, were sentenced to death by the Special Courts of the Polish Underground for crimes against Polish citizens during the Occupation of Poland. Because of the particular brutality of the police, the AK killed 361 gendarmes in 1943, and 584 in 1944. In Warsaw alone, ten Nazis were killed daily. From August to December 1942, the AK launched 87 attacks on the Nazi administration and members of the apparatus of terror. In 1943 this number rose radically − the AK carried out 514 attacks during the first four months. In an underground operation known as Operacja Główki (Operation Heads), Polish underground combat units from Kedyw eliminated roundup organizers such as: