I agree, so many people get this confused -then wonder why the "free" photo they've downloaded from the site shows a big watermark, or is poor quality!
Here's a hub that covers some of the basics for legal image use.
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.