There are certain phrases that rub me the wrong way, and this is one of them. Right now, we're in the midst of dealing with fundamentalist Muslims in the form of ISIS, and the concern expressed by almost everyone is "Are we going to have to have boots on the ground in Iraq again?" CEO's use the term as a way of showing that they "understand" what the average worker does in their companies, and I've heard it in lots of other contexts ever since the phrase cropped up. It pisses me off no end.
Here's why: there are people in those boots, and they are the ones getting blown up, or grievously wounded, or experiencing terror the likes of which no one should have to deal with. They'll live with that for the rest of their lives. "Boots on the ground" implies all this is just a bunch of footwear; it dehumanizes every person alluded to by that phrase.
We have a tendency to do that with any unpleasant reality. "Collateral damage" was a big one in my day - and it still is; implying that the use of military force *might* lead to some buildings being damaged somewhere that - oh shucks - we didn't mean to do that but it's the price of "doing business". Of course, what's hidden by that phrase are the people killed and injured because they were in the wrong place at the wrong time. We're pretty good at disguising what we really mean with language.
While we're at it, the contention that the US isn't committing combat forces against ISIS at this stage denigrates the hazards the airmen doing the current bombing are facing. As a former "grunt" (now there's a euphemism that really does capture reality) I admit to some scorn for the flyboys because they don't necessarily see the reality of what they do; but they're in hazard's way like grunts and if that isn't combat, I don't know what is.