I was searching through Polish learning videos on YouTube and I happened across this really well animated history video about the struggle for independence from 1939-1989. If you like Poland or WWII then I recommend giving it a watch. P.S. The narrator of the English version is Sean Bean.
English Version (YouTube): https://www.youtube.com/watch?v=Q88AkN1hNYM
Polish Version (YouTube): https://www.youtube.com/watch?v=M7MSG4Q-4as
Official Site: http://www.theunconquered-movie.com
I prefer the older one, although there's nothing spoken here and the events shown might not be clear to those who had never been learning Polish history before.
(It's not 100% accurate if you focus on the details but it's meant to present the spirit and meaning of the history and historical events rather than to be accurate to the bone).
Yeah, I have seen Historia Polski before and I really like it for its total summary of Polish history but since I love WWII and Cold War history, I loved the tone of The Unconquered.