The Jüdischer Ordnungsdienst were recruited from two separate groups, who could be relied upon to follow German orders. The first were Jewish lawyers, disbarred by the German occupiers, largely recruited by deputy commander Jakub Lejkin, himself later killed by the Jewish Resistance. The second, larger and more criminally active group, were recruited from among pre-War Jewish organised crime groups
The criminal elements in the Ordnungsdienst soon came to dominate several areas of life in the ghetto, notably the transportation of people and goods. Additionally, there was a secret department, Section 13, known as the “Jewish Gestapo“. It specialised in tracking down Jewish people outside the Ghetto walls, as well as their Polish helpers, and often profited by extorting them.
The Polish-Jewish historian and the Warsaw Ghetto archivist Emanuel Ringelblum has described the cruelty of the ghetto police as “at times greater than that of the Germans, the Ukrainians and the Latvians.