Well right now I'm very fascinated with 1920s Berlin. I mean probably the more interesting thing would be to go to the beginning of civilization or precivilization - like polytheistic times. It would be interesting to see what came before modern religion and culture - what circumstances created the environment or the need for it.
Wars will remain while human nature remains. I believe in my soul in cooperation in arbitration but the soldier's occupation we cannot say is gone until human nature is gone.