I saw a really good Russian documentary on YouTube about the failure of the Russian 1942 attempt to drive the Germans further back from Moscow.
I didn’t realize until a few months ago that so many documentaries were on youtube. I’ve watched quite a few, mostly ancient civilization so far. I’ve never looked for full length movies there.
If you haven’t already, you could check out the netflix.com and huluplus 30 day free trials. And I think you can still watch many movies free (limited commercial interruption) at hulu.com.