if you really want to know more about it, read the book:

https://www.amazon.com/Auschwitz-New-History-Laurence-Rees/dp/1586483579

I just finished it last month. it talks about the "build up" and "optimization" of the facility (and others) along with quite a bit of history.

tragedy of untold proportions.

one surprise to me was that most of the victims werent Germans. apparently Germany didnt have that many Jews, but as they conquered adjacent nations (Poland, France, Hungary, etc) they worked with the local governments to select Jews for deportation, then murder. Hungary lost the most because of their #'s.

First teach a child to love God, second teach him to love family, third teach him to fish and hunt and by the time he is in his teens no dope dealer under the sun can teach him anything. Cotton Cordell