The NAPOLA students that were interviewed in the book, all came from the Koslin school. The school was in Prussia but is today in Polish territory and was completely destroyed after the war. Here's a picture of how the school looked like in 1940.
The Koslin students have a yearly "get together" reunion in Plon (Germany) and more than 50 of them are still alive and those, were the one interviewed in the book.
Just fascinating !
