To be honest usually I like finishing an anime in the language I started watching it in but I prefer subs better for a few reasons. The main one being that the actors voices are always more precise and fit the character better. Ie: Kuroshitsuji is a great anime, the sub is amazing.
I love Grell Sutcliff's voice in it but its completely changed in the english dub. Dubs are fine too, just some are really bad compared to others. I really don't like the Haruhi Suzumiya dub for example.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.