I think it's about Vladimir the great
Yep. It's about him. You should also check out this: https://steemit.com/blog/@vimukthi/stalingrad-2013-a-purely-unbiased-movie-about-the-greatest-battle-of-wwii-from-the-biggest-victims-of-the-battle
and from the same director came this which cost little more than half the budget of a game of thrones episode:
I will definitely check that out!