A kapo leader at Salaspils concentration camp, Latvia, with a Lagerpolizist (camp policeman) armband.

A kapo or prisoner functionary was a special type of prisoner in the Nazi concentration camps during The Holocaust. Kapos were chosen by the Schutzstaffel (SS) camp guards to help run the camps. Some kapos were in charge of other prisoners, who had to do forced labor. Other kapos did paperwork and kept records in the camps.