Triangle

(German: Winkel)

A triangle sewed on the striped uniform along with the camp number designated a prisoner’s category. Red triangles denoted political prisoners, green triangles—criminal prisoners, black— asocial, pink—homosexual, and purple—Jehovah’s Witnesses. At first, Jews were issued an additional yellow triangle pointing up; when a triangle in one of the colors mentioned above (almost always red in practice) was sewn over it, the resulting effect was a six‑pointed Star of David. Later, instead of the yellow triangle, a narrow band of yellow fabric was sewn above the red triangle. Letters on the triangles defined the nationality of the prisoner—P for Poles, R for Russians, U for Ukrainians, and so on. Reeducation prisoners (Erziehungshäftlinge) bore the letter E instead of a triangle, and Soviet prisoners of war had the letters SU (Sowjetunion) daubed on their clothing in oil paint. No letter designators were used on German prisoners.

(Mini dictionary of terms from the history of Auschwitz)