Impressed.
I don't know much about the details of the events, so I can't comment on authenticity.
However, I suspect that my perspective is interesting to anyone who is simply looking for a decent action movie.
My conclusion is that you seem to have come to the right place. This is a good action movie, it has well made action scenes. It also has very good acting, dialogue, script and set, it's all very realistic.
Disclaimer; it's a WW2-movie, so it's rough, dark, and unpleasant - naturally. There are cute parts though, because as previously mentioned it is a realistic movie. But overall it's rough.
That's it I believe. Netflix has the rights, so go see if they are running it in your country atm.