I'm not entirely sure what you mean by "catchy" or what theme exactly you are analyzing, but one thing I always tell my students is make sure you state your hypothesis/stance clearly in the opening paragraph (and my rule is also that they are not allowed to use words like "I" or "me" in an analysis essay), the interpretation of that stance, and a brief statement as to why it is true. To help make it "catchier", teachers love it when you use quotes from the book. If you can find a quote (and make sure you cite the page number!) that really illuminates your stance/hypothesis, that makes for a very strong (and depending on the quote, catchy) opener.
Good luck! Be creative, but remain objective.
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.