نجمة داود
A Star of David, often yellow, was used by the Nazis during the Holocaust to identify Jews. After the German invasion of Poland in 1939, there initially were different local decrees forcing Jews to wear distinct signs (e.g. in the General Government, a white armband with a blue Star of David; in the , a yellow badge, in the form of a Star of David, on the left breast and on the back). If a Jew was found in public without the star, he could be severely punished. The requirement to wear the Star of David with the word (German for Jew) was then extended to all Jews over the age of six in the Reich and in the Protectorate of Bohemia and Moravia (by a decree issued on September 1, 1941 and signed by Reinhard Heydrich) and was gradually introduced in other Nazi-occupied areas. Others, however, wore the Star of David as a symbol of defiance against Nazi antisemitism, as in the case of United States Army private Hal Baumgarten, who wore a Star of David emblazoned on his back during the 1944 invasion of Normandy.