The 506th Infantry Regiment, originally designated the 506th Parachute Infantry Regiment (506th PIR) during World War II, is an airborne light infantry regiment of the United States Army.
 Currently a parent regiment under the U.S. Army Regimental System, the regiment has two active battalions: the 1st Battalion, 506th Infantry Regiment (1-506th) is assigned to the 1st Brigade Combat Team, 101st Airborne Division, and the 2nd Battalion, 506th Infantry Regiment (2-506th) is assigned to the 3rd Brigade Combat Team, 101st Airborne Division.
The 1st Battalion, 320th Field Artillery Regiment (1-320 FAR) is the field artillery battalion assigned to the 2nd Brigade Combat Team, 101st Airborne Division.
 The battalion has been assigned to the 82nd Airborne Division, 11th Airborne Division and 101st Airborne Division.
 The battalion has participated in World War I, World War II, Operation Power Pack, Operation Urgent Fury, Operation Desert Storm, Operation Iraqi Freedom, Operation Enduring Freedom, and Operation Inherent Resolve.
The 3rd Battalion, 320th Field Artillery Regiment (3-320th FAR) is the field artillery battalion assigned to the Division Artillery (DIVARTY), 101st Airborne Division.
 The battalion has been assigned to the 82nd Airborne Division, 11th Airborne Division and 101st Airborne Division.
 The battalion has participated in World War I, World War II, Operation Desert Storm, Operation Enduring Freedom, and Operation Iraqi Freedom.
The 1st Battalion, 377th Field Artillery Regiment, is an inactive M198 howitzer 155mm field artillery battalion of the United States Army.
 The battalion has seen service with the 101st Airborne Division during World War II and Vietnam, and deployed to Iraq and Afghanistan during the Global War on Terror.
 The battalion has been stationed with the 101st Airborne Division at Fort Campbell; with the 18th Field Artillery Brigade and the 82nd Airborne Division at Fort Bragg, North Carolina; and with the 17th Field Artillery Brigade at Fort Lewis, Washington.
Fort Campbell is a United States Army installation located astride the Kentucky-Tennessee border between Hopkinsville, Kentucky, and Clarksville, Tennessee.
 Fort Campbell is home to the 101st Airborne Division and the 160th Special Operations Aviation Regiment.
The 907th Glider Field Artillery Battalion (907th GFAB), also designated as the 907th Field Artillery Battalion and as the 907th Airborne Field Artillery Battalion, is an inactive field artillery unit of the United States Army.
 The battalion served in three campaigns with the 82nd Division during World War I; with the 101st Airborne Division during World War II, seeing action in four campaigns, including the Invasion of Normandy, Operation Market Garden and the Battle of the Bulge.
 After a brief service in the Organized Reserve from 1948-1950, the battalion returned to active duty and the 101st Airborne Division briefly from 1956-1957, before its final inactivation.
The 326th Medical Battalion is a divisional support medical unit of the United States Army.
 It supports the 101st Airborne Division, located at Fort Campbell, Kentucky.
The 15th Medical Battalion was a non-combat battalion of the United States Army Medical Department, originally formed on 23 March 1925 as the 1st Medical Squadron and redesignated as the 15th Medical Battalion on 25 March 1949.
 On 1 October 1984, the 15th Medical Battalion was redesignated the 2nd Forward Support Battalion.
 Two of the medical companies were reassigned and a Quartermaster company from the 15th Supply & Transportation Battalion became the new Company A, while Company B came from the 27th Maintenance Battalion.
 On 15 May 1987, the Battalion became the 15th Support Battalion (Forward).
 The Battalion has been assigned to the 1st Cavalry Division since it was formed.
The 502nd Infantry Regiment (502nd INF), previously titled the 502nd Parachute Infantry Regiment (502nd PIR), is an airborne infantry regiment of the United States Army.
 The regiment was established shortly after the American entry into World War II, and was assigned as a regiment of the 101st Airborne Division, "The Screaming Eagles", one of the most decorated formations of the U.S. Army.
 The regiment saw substantial action in the European Theater of World War II and was deactivated in 1945, shortly after the end of the war.
 Reactivating in a new form in 1956, the 502nd Infantry has served in the Vietnam War, the first Gulf War, Operation Iraqi Freedom, Operation Enduring Freedom in Afghanistan, and Operation Inherent Resolve in Iraq.
 It was removed from parachute status with the rest of the 101st Airborne Division in 1969, and since 1974, the regiment has been classified as an Air Assault unit.
 Currently, its 1st and 2nd battalions are active.
 Both battalions are assigned to the 2nd Brigade Combat Team, 101st Airborne Division (Air Assault).
The 320th Field Artillery Regiment (FAR) is a field artillery regiment of the United States Army.
 A parent regiment under the U.S. Army Regimental System, the 320th FAR currently has two active elements in the 101st Airborne Division (Air Assault): 1st Battalion, 320th FAR (1-320 "Top Guns") in 2nd Brigade Combat Team; and 3rd Battalion, 320th FAR (3-320 "Red Knight Rakkasans") in 3rd Brigade Combat Team.
 The regiment served with the 82nd Airborne Division during World Wars I and II, and regimental elements have served with the 82nd and 101st Airborne Division, the 193rd Infantry Brigade and the Berlin Brigade, and conducted combat operations in the Dominican Republic, Vietnam, Grenada, Operations Desert Shield and Storm, and the Global War on Terror.

Question: The 326th Medical Battalion supports the 101st Airborne Division located at which United States Army Installation on the Kentucky-Tennessee border?
Answer: Fort Campbell