What is the closest military installation to Chattanooga TN?

The closest military installation to Chattanooga, TN, is the United States Army's Fort Campbell, located approximately 100 miles to the northwest near the Kentucky border. Another nearby installation is the Army National Guard's 3rd Battalion, 117th Field Artillery Regiment, which is stationed in Chattanooga itself. Fort Campbell is primarily known for being home to the 101st Airborne Division.