Yes, the US Military could do a lot of good...
...but the issue of “doing good” has to tempered with realism, which this will not be given the current America Presidential Administration.
Do you remember what happened in Somalia when the locals learned we would not use lethal force to prevent them from stealing our military gear?
I guarantee that we will have even more politically correct rules of engagement (ROE) for Liberia and which every nation we state aircraft from.
On the gripping hand, the Chemical corps will sure get some practice decontaminating aircraft, gear and troops of Ebola slime.
They will need that practical experience for training people in CONUS, before this is over.
It seems the biggest problem is one of adequate supplies of PPE. I would think that could be pallet-dropped off a C-130 without ever landing.