Before embarking on your quest to turn your book into a movie, you must ponder for yourself whether your book has the movie potential, in which case, you must evaluate whether your story has the characteristics of a cinematic film. The first step in having your movie turn into a movie is by turning your book into a screenplay. As far as screenplay writing is concerned, many resources are found online that gives you an idea on how to go about it.
You can also visit forums catering to aspiring screenwriters. Another way around this is to employ the services of a professional screenwriter. If your screenplay is finished, your next move is to find a literary agent that will be responsible for working out your film rights.
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.