Here's a little information from the web site:
Strategically located on the TN/KY state line, the 106,700 acre installation possesses a unique capability to deploy mission-ready contingency forces by air, rail, highway, and inland waterway.
Fort Campbell is proud to be the home of the only Air Assault Division in the world, the 101st Airborne Division (Air Assault).
There is even a museum with the history of the base.
It's interesting to see the base at work, along with the history.