The SS created a system of marking prisoners in concentration camps. Color-coded badges were sewn onto uniforms and identified the reason for a person's imprisonment. This system began in 1937–1938 and had some variation among camps.
Prisoners during a roll call at the Buchenwald concentration camp. Their uniforms bear classifying triangular badges and identification numbers. Buchenwald, Germany, 1938–41.
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Prisoners from Austria, marked with triangles and identifying patches, in the Dachau concentration camp. Germany, April 1938.
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Uniformed prisoners with triangular badges are assembled under Nazi guard at the Sachenhausen concentration camp. Sachsenhausen, Germany, 1938.
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Photograph of Julian Noga, a Polish prisoner (marked with an identifying patch bearing a "P" for Pole) imprisoned in the Flossenbürg concentration camp. Germany, between August 1942 and April 1945.
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