No. You need to check what licensing conditions apply to each picture you want to use. Some will say they can be freely used in anyway you want while others will say they cannot be used at all and you can face legal prosecution for using someones work without their permission.
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.