What is history: it is the echo of the past to the future, the reflection of the future on the past. - Hugo
In our view, Jews are similar to Germans, and they are indecipherable in both language and appearance, how did Hitler distinguish them during World War II?
In fact, the Nazis distinguished between Jews and Germans, which was a simple matter, and the Nazis had their own methods.
The first is that the household registration in Germany is extremely strict and is known for its detailed and complete. Everyone in Germany is strictly monitored. When invading European countries such as Poland, the Nazis also seized population data for screening.
The second point is based on physical characteristics. We may not see the difference, but Europeans can easily distinguish Jews. Jews and Arabs are similar in appearance, both descendants of the Semites, characterized by black hair, dark eyes, hooked noses, and generally not very tall. The Germans, on the other hand, were blonde and tall.
The third point is that Jews are more closed, prefer to live in groups, have specific Jewish neighborhoods, are not very integrated into local society, and have obviously different living customs from the local area, which is easy to find by the Nazis.
The fourth point is to expose each other. Jews have their own national traditions and religions, as neighbors will know, and the Gestapo encourages people to expose their Jewish neighborhoods. At the same time, Jews exposed that Jews would also be spared from disaster, and some Jews would expose themselves to the Gestapo in order to protect themselves.
Fifth, Jewish men were circumcised, had bruises on their private areas, and were required to take off their pants for examination if necessary.
Finally, Hitler forced Jews to wear armbands with six stars, the six-pointed star for German Jews in yellow, and the Blue for Polish Jews. The front and back of the clothes must also have similar signs. If you don't wear an armband, you'll be killed. The Jews wearing the hexagrams were easily distinguished from the Germans.