Just one detail, not very important but showing that the writer's knowledge is not exactly up to date: McShane writes that the Swiss (whoever that was) "was also responsible for getting the Nazis to stamp the notorious J (for Jude, or Jew) on the front of German passports [...]."

That myth, pampered by many media world-wide to this day, was based on an article in the Beobachter in 1954. The Beobachter had to apologize for that nonsense in 1998 (see here), but the myth is hard to kill and still pretty handy.