An incoherent mess

I spent half the movie wondering, "Who is that person, and why am I supposed to care?" And when there was narration, which normally would help clear things up, I was never sure whether the narrator was a character in the movie or a disembodied authoritative voice or an ironic counterpoint to what I was watching. I don't think you can learn much history from this movie. On the contrary, you have to already know a fair amount of WWII history in advance of watching this movie in order to have any hope of understanding what is going on.