A chart of prisoner markings used in German concentration camps. The vertical categories list markings for the following types of prisoners: political, professional criminal, emigrant, Bible Students (as Jehovah’s Witnesses were then known as), homosexual, Germans shy of work, and other nationalities shy of work. The horizontal categories begin with the basic colours, and then show those for repeat offenders, prisoners in Strafkompanie, Jews, Jews who have violated racial laws by having sexual relations with Aryans, and Aryans who violated racial laws by having sexual relations with Jews. In the lower left corner, P is for Poles and T for Czechs (German: Tscheche). The remaining symbols give examples of marking patterns.