They're all over the place and some are only accessable on certain difficulty levels. Getting to many of them is quite involved (more than can reasonably be posted here) so here are several walkthroughs to all of them, take your pick as to which you like.
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.