You may find it ridiculous, but that doesn't mean someone in the billing department doesn't play a very different but also important role in a hospital. It's just that they support the main effort, rather than being the main effort. It's the same as in the military, where CS/CSS...well, it's in the name. They support combat. Combat's what it's all about, and everyone else is just there to enable the combat arms. I say that as the husband of a POG (who proudly wears that title), a future POG in the Nasty Guard, and someone who's deployed three times in the last four years supporting combat arms.
Again speaking to the diversity of military experiences, I've spent months and months next to 38BW4s and 18Ds, and saw them have some amazing experiences because they get to do both trauma and a lot of civilian and veterinarian care in OIF/OEF. On the other hand, a lot of NSW platoons have been performing similar duties in the last few years, but I haven't seen their medics really get into the civilian hearts-and-minds role. Then again, almost everyone I've met from all those communities seems to plan to either quit medicine or become a PA, rather than pursue MD/DO. People working in Role IIIs obviously get a breadth of cases...some CLS providers gain a taste for medicine from a rollover...there are so many different ways to be exposed to medicine in the military that, as Destriero pointed out, it's really all about how interesting you make yourself. I'm simply curious as to how much med schools know about that breadth, especially in light of the veteran influx of the last ten years.