You have a good imagination. Certain things will improve as you write more often. You're speaking from the Troopers point of view, so try to express it in Germanic phrases or terms. What did they call the Concentration Camps?
Also, from what I've read and was taught, the SS who did this stuff wouldn't have felt remorse. They viewed the Jews as vile animals. Writing and thinking in that frame of mind would be very distressing.
Good job though.