They might have been just regular Germans and not technically Nazis, but in America that's not considered an excuse. Maybe your countries view WW2 slightly differently.Most people in the UK wouldn't be offended or anything like that in the slightest, and most recognise that only the Nazi higher-ups were evil. Its not Germany who are thought of as the bad guys, its the Nazis.
Like especially in video game format, there'd be huge backlash unless the main character's internal/external fight against their side was the main marketing point. I can't even think of movies that are solely from a German soldier's perspective.
Personally I'd find it really interesting to play as German soldiers. I hope its done eventually.