Class Discussion: Draft/What would it take to join the military

I've always been really patriotic, Merica ya wooooohhh let's kill some terrorists. Both of my Grandfathers fought in wars, my Dad's dad in the Korean war and my Mom's dad in WWII. And, to be honest, I've always really wanted to serve my country through military involvement. However, by military involvement I don't mean fighting, or even having to hold a gun, I was thinking more engineering or strategy. I don't think I could ever be able to fight, more specifically be shot at. Plus you hear so much about people just being completely changed and traumatized from the experience that, while they didn't actually die, they're so distraught that they wish they had died. I just couldn't do it, and if there were a draft, I'd probably book it to Australia.