There was a really long Russian series on German invasion of USSR...with lots of CGI for the battles etc....but I learnt a lot from it. I will post it sometime when I find it again. But the episodes are full feature length long (45 minutes)....but full of lots of information about the individual operations.
Being Russian I expected it to be biased to their perspective....but it was pretty fair and neutral I have to say.
OK I found the first episode on youtube, tell me if its your sort of thing and we can maybe discuss the episodes etc over longer period of time.
@vostok Would you be interested in this kind of thing?