You probably already carry the last name of one line of your ancestors The laws on changing last names are different in different countries, and some are very restrictive. In the US, anyone can change his or her last name to most anything they like, as long as they are not doing it so they can commit fraud. All you have to do is file with the appropriate court and perhaps post some notices in the local newspaper.
Oh, yes, you must be a legally competent adult before you can do that.
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.