An improvement of an existing invention is itself an invention, and can be patented like any other invention. Contact a patent practitioner (patent agent or patent attorney) for assistance. The United States Patent and Trademark Office has lists and addresses of patent practitioners in every state.
Avoid companies that advertise they will "help you get a patent.
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.