1. Battlefield 3 2. MW3 9001.
Black Ops Black Ops is a terrible game, don't even consider it.
Battlefield 3 is better out of all of them, But if you want a fast paced game go with black ops. MW3 people just camp in corners and wait for the kill. So it is not fun, Black ops has zombies witch is epic.
So it all comes down to preference. Get BF3 :D.
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.