Well I did 4 years of ROTC for the Army but that hardly counts.
And I really think you haven't actually studied a lot about how modern wars are being fought, which I find a bit surprising considering your otherwise knowledgeable posts.
Battles are done. The idea of a set-piece battle is pretty much a thing of the past. There are no front lines. Yes we still do active patrols, but we don't truly hold territory, it's mostly a projection of force. And with super-sonic jets that can hit a target in minutes, why should we have foot-slogging infantry? Our military is still built up for a conventional war with the USSR; we really have only recently begun to adopt new tactics.
The "Front-Line", ie the people most actively taking the fight on the ground are Special Forces, and have been since the 80's. That means nothing about casualties, as there truly is no "front line", IED's can kill anywhere. To my albeit limited knowledge, every military action the US has undertaken on the ground in the last 30 years has started with Special Forces. Even longer if you want to count Vietnam.
And yes, coming from a military family I can assure you I have met many. From retarded grunts that got full benefits from claiming PTSD and never leaving ship or base to my old roommate that's a SAW gunner in the Green Beret now. I know what you're getting about the poor fighting rich men's wars, but our Special Forces are some of the hardest men on the planet, and very often don't come from poor backgrounds. And they are also not dumb. You'd be surprised at the intellectual requirements a lot of those guys go through.