Lots of things might need to be changed (it's difficult to give a comprehensive list: "this is what could go wrong").
To specify the issue cnicutar mentions, a typical candidate for issues is when you directly access parts of a type by an array of a different type, instead of using calculations for access.
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.