First of all MD(allopathic medicne) and DO(osteopathic medicine) are really similar. The only difference is that the way the latter learns is a bit more holistic. Typically the best doctors are MDs if that is any consolation, MD schools tend to be better, and the students tend to be smarter, however that is not always true.
I would say look up the philospohies and choose one. In addition, MDs make more money, and DOs typically have harder times getting high level allopathic residencies and fellowships such as cardiology, radiology(both interventional and non), surgery, etc. you get my point.
I would suggest that you visit the nearest medical school and ask them to explain what kinds of doctors there are and some of the many various specialties. Perhaps they'll even introduce you to doctors in various fields.
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.