Well, I'm sure you can find a place with a high number of gunshot wounds. Explosion wounds might be harder to come by. I find myself both intrigued and disturbed by your passion for them, though.
Maybe that's just me.
I do think perhaps you have an unrealistic and romanticized view of what it would be like to do that kind of work. You haven't even worked in the medical field yet, and you're wanting to "treat and even save" people with these kinds of trauma, and "maybe join the military".
I dunno, this post almost seems like a fake. Or like the poster is quite young. I may be wrong, and I don't want to jump to conclusions. But I think the first step would be to get some "work in the medical field" or "join the military", either or both, before you make plans to be an NP and save lives. Walk, then run.