If it is your first time, I would recommend 4-5-6-1-2-3 Otherwise, 1-2-3-4-5-6 should do.
If you have never seen any of them. Watch them as they were intended to be seen 4,5,6 then 1,2,3 The Prequels really aren't that bad. I rather enjoyed them.
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.