Well, you most certainly can't be sued outside of Germany for killing anyone of them. They officially don't exist and would be way more illegal than BePo based on the treaties leading to a German Nation.
Meaning, who would arrest you where, when telling your name over radio hearing "Oh. The GeStaPo Killer is here, Politsey is looking for? How does he look like"
....
#WW2
Germans, who did you get in trouble with here? What you think...
#coldwarkids