I presume you still have the product installed. In that case, you can search for it by using a product key searcher like Magical Jelly Bean Keyfinder. Download it here: magicaljellybean.com/keyfinder/ and search your registry for the product key.
If you haven't installed it any more, you need to contact EA or Criterion (criteriongames.com). If you can somehow prove you have a legitimate version, and you registered your product when you bought it, they might be able to re-issue it to you.
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.