Ironically some input from Rudel was apparently used during the development of the A-10. At least this is mentioned on the Wikipedia page linked above.
Could also be from German, although this would also be written ne instead of neh.
People from the northern part of Germany use this in pretty much the same way it is used in Japanese (at least according to what I know with my limited knowledge of Japanese)
I always thought of this as a strange quirk that the same language construct can evolve in two unrelated languages.
It's just like parallel evolution in biology.