US military is for the defense of the US. Send supplies, tell them how to use them, ban flights from West Africa, and protect our citizens and soldiers. If that is selfish, too bad. The risk of these troops bringing Ebola back to the US is too great.
I don't object to a true chem/bio warfare unit being deployed in principle, since were the disease to break out, it would eventually affect Americans.
But the troops should be quarantined for an appropriate time on their return.
And we should ban all commercial flights from West Africa, which is categorically different.