That probably is the picture I have in my memory. A German holding a Hi-Power in one hand. He looks a bit battle weary and maybe a bit dirty.
This guy?
http://www.warandtactics.com/smf/personalities-aces/oh-that-guy-i-know-these-pictures-but-who-is-he/
As I recall, when Germany invaded Belgium, they captured the FN plants and stock, and began producing weapons for Nazi Germany, and you can find many surplus FN weapons, like the High Powers, with Nazi markings.
Mark