| Prisoner Identification Key |
Red = POLITICAL PRISONERS |
Green = CRIMINALS |
Purple = JEHOVAH'S WITNESSES |
Black = SHIFTLESS ELEMENTS |
Brown = GYPSIES |
Yellow = JEWS* |
Pink = HOMOSEXUALS |
| F |
| N |
| K |
| A |
| France |
| Some prisoners also had a letter superimposed on their triangles: |
| Netherlands |
| War Criminals |
| "Labor Disiplinary Prisoners" |
| All concentration camp prisoners had to wear triangles sewn onto their clothing: on the left shoulder and on the right pant leg. The triangles had the prisoners' serial numbers on them and were color-coded to identify the prisoners easier. |
| *Jews wore two triangles on top of each other - making a Star-of-David. |