Elements of the 82nd are in Kuwait. US order of battle against ISIS is becoming clear.

via Army Times

 The U.S. military is sending an additional 2,500 ground combat troops to a staging base in Kuwait from which they could be called upon to back up coalition forces battling the Islamic State in Iraq and Syria.
The deployment will include elements of the 82nd Airborne Division's 2nd Brigade Combat Team, which is based at Fort Bragg in North Carolina. About 1,700 soldiers from the same unit are overseas now, spread between Iraq and Kuwait. They're focused on the U.S.-led effort to train and assist the Iraqi troops doing much of the fighting against ISIS there. 

So why send the 82nd to Kuwait?

Theater Reserve?

Special Operations Support?  They are spread all over Kuwait so they might be doing the Army's version of distributed operations.

Rescue force for US units in danger of being over run?  Kinda far away for that, but I'm sure they have elements that have pushed forward and are setup in remote parts of the desert.

Occupation troops for Mosul or parts of Syria when ISIS is finally killed?  Doubt it.  They're too lightly equipped for that nonsense and Trump has stated that he isn't interested in nation building (ignore that "take the oil" stuff...it won't fly and even if it did we'd have to send Divisions not a Brigade Combat Team).

I don't know.

The Pentagon way of doing this is kinda curious.  Why send parts of your global response force when the 173rd is sitting in Europe waiting to do their job here.  With the distances involved and with the force being so light why not use the 101st (they are truly the forgotten division in the Army right now).

We see the outlines of the end game with regard to ISIS and the US order of battle is starting to take shape but the plan that's to be implemented is still murky.  I guess we need to be patient and see how this goes.