Not familiar with his films but a quick Google search suggests the film you are looking for is: An Affair to Remember is a 1957 film, starring Cary Grant and Deborah Kerr.
This is a list of cary grant movies! I hope you get it there! :).
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.