Jd-gui is the best decompiler at the moment. It can handle newer features in Java, as compared to the getting-dusty JAD.
If you don't mind reading bytecode, javap should work fine. It's part of the standard JDK installation.
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.