List of formations of the United States Army during the War on Terrorism

After the end of Operation Desert Storm/Shield, the US Army inactivated many units. The units fighting the War on Terrorism are the survivors of the "Peace Dividend". While additional fighting brigades are being created, no additional deployable higher headquarters units are planned. This list is not comprehensive as it only includes active-duty formations under the divisional structure. There are many Reserve, National Guard, and support units not included or referenced here.

Armies

 * First Army
 * Eighth Army
 * United States Army Central
 * United States Army Cyber
 * United States Army Europe
 * United States Army North
 * United States Army Pacific
 * United States Army South

Corps

 * I Corps
 * III Corps
 * V Corps
 * XVIII Airborne Corps

Divisions

 * 1st Infantry Division (The Big Red One)
 * 1st Cavalry Division (The First Team)
 * 1st Armored Division (Old Ironsides)
 * 2d Infantry Division (Indian Head)
 * 3d Infantry Division (Marne Division)
 * 4th Infantry Division (Ivy Division)
 * 7th Infantry Division (Bayonet Division)
 * 10th Mountain Division
 * 25th Infantry Division (Tropic Lightning)
 * 35th Infantry Division (Santa Fe Division)
 * 82d Airborne Division (All American)
 * 101st Airborne Division (Air Assault) (Screaming Eagles)

Brigades

 * 39th Infantry Brigade Combat Team (The Arkansas Brigade)