Was Erich Kastner in a concentration camp?

The reason they were called concentration camps is because they were camps where the government concentrated (herded together) a particular group of people.

Well basically concentration camps can either be a place for work, or a place to gas or cremate people. If you were under 15 or 14 you would instantly be sent to the chambers to be gassed. The same...

A death camp, or extermination camp is one that was specifically designed for murdering. The six death camps were: Auschwitz-Birkenau Belzec Sobibor Treblinka Majdanek Chelmno A concentration camp...

German Troops Took Jews to different concentration camps because of how sick and different types of Jews it was a messed up system.

Because it was a way to "concentrate" the people into one area that were a real or perceived threat to the government at the time.