The 4th Infantry Division is a division of the United States Army based at Fort Carson, Colorado. It is composed of a division headquarters battalion, three brigade combat teams, a combat aviation brigade, a division sustainment brigade, and a division artillery.
The 10th Mountain Division (Light Infantry) is a light infantry division in the United States Army based at Fort Drum, New York. Formerly designated as a mountain warfare unit, the division was the only one of its size in the US military to receive specialized training for fighting in mountainous conditions. More recently, the 10th Mountain has been conducting operations in Iraq and Syria advising and assisting Iraqi Security Forces and People's Defense Units.
The 2nd Brigade Combat Team, 1st Infantry Division, also known as the Dagger Brigade, is a maneuver brigade combat team in the 1st Infantry Division of the U.S. Army stationed in Fort Riley, Kansas.
The 12th Infantry Regiment is a unit of the United States Army. The 12th Infantry has fought in seven wars from the Civil War to the Global War on Terrorism and has been awarded 19 Presidential Unit Citations, five Valorous Unit Awards, a Joint Meritorious Unit Award, two citations in the Order of the Day of the Belgian Army, Nine Republic of Vietnam Crosses of Gallantry, the Republic of Vietnam Civil Action Honor Medal Third Class, a Meritorious Unit Commendation, and the Belgian Fourragere.
Reconnaissance, surveillance, and target acquisition (RSTA) refers to a joint doctrine of reconnaissance, surveillance and target acquisition conducted by the United States Armed Forces. RSTA operations are designed to support military operations at a strategic, operational, or tactical level, either by dedicated RSTA forces or those which possess the capability.
The United States Army Regimental System (USARS) is an organizational and classification system used by the United States Army. It was established in 1981 to replace the Combat Arms Regimental System (CARS) to provide each soldier with continuous identification with a single regiment, and to increase a soldier's probability of serving recurring assignments with his or her regiment. The USARS was intended to enhance combat effectiveness by providing the opportunity for a regimental affiliation, thus obtaining some of the benefits of the traditional regimental system.
Below is an estimated list of the major units deployed within the Multi-National Force – Iraq and other United States military units that were operating in Iraq under the U.S. Central Command (USCENTCOM) in 2009, during the Iraq War.
The 37th Engineer Battalion is an airborne engineer battalion in the United States Army, and currently subordinate to the 2d Brigade Combat Team, 82d Airborne Division, based at Fort Bragg, North Carolina. The 37th Engineer Battalion was reactivated in the 82d Airborne Division as part of the United States Army new BCT 2020 concept in which each BCT's Special Troops Battalions would be inactivated and reactivated as Brigade Engineer Battalions. Prior to this, the battalion was a subordinate unit of the 20th Engineer Brigade assigned to XVIII Airborne Corps.
The 2nd Infantry Brigade Combat Team (Airborne), 11th Airborne Division is an airborne infantry brigade combat team (BCT) of the United States Army. The unit is stationed at Joint Base Elmendorf-Richardson in Anchorage, Alaska and is the only airborne brigade combat team in the Pacific Theater. It is also the newest airborne Infantry BCT and one of only five in the United States Army; the others are the three Infantry BCTs of the 82nd Airborne Division and the 173rd Airborne Brigade.
In 2009, the United States and NATO International Security Assistance Force (ISAF) coalition, along with Afghan National Army forces, continued military operations against the Taliban in Afghanistan. 2009 marks the eighth year of the War in Afghanistan, which began late in 2001. And 75th ranger regiment is also in Afghanistan as of 2018
The 1st Brigade Combat Team, 10th Mountain Division is an active Infantry Brigade Combat Team of the United States Army based at Fort Drum in New York. The brigade headquarters carries the lineage of the 10th Mountain Division's original headquarters company, and served as such in World War II, and in peacetime at Fort Riley, Fort Benning, and West Germany in the 1940s and 1950s.
The 4th Brigade Combat Team, 10th Mountain Division is an inactive infantry brigade combat team. Based at Fort Polk, Louisiana, the brigade was active from 2005 to 2015. It was a subordinate formation of the 10th Mountain Division.
The Combat Aviation Brigade, 10th Mountain Division is a combat aviation brigade of the United States Army based at Fort Drum, New York. It is a subordinate unit of the 10th Mountain Division.
The Special Troops Battalion, 3rd Brigade Combat Team (BCT), 10th Mountain Division was a special troops battalion of the United States Army headquartered at Fort Drum, New York. It was the organization for the command elements of the 3rd Brigade Combat Team, 10th Mountain Division. The battalion contained the brigade's senior command structure, including its Headquarters and Headquarters Company (HHC), as well as military police, engineering, intelligence, and communications elements. An inactivation ceremony was held on 24 October 2014 on Magrath Field, Fort Drum, NY to mark the inactivation of the battalion. The 3rd Brigade held its inactivation ceremony on 14 August 2014 to mark its inactivation.
The 4th Brigade Combat Team, 1st Infantry Division is an inactive Infantry Brigade Combat Team. Active from 2006 through 2015, the BCT served in Iraq from 2007 to 2008 and from 2009 to 2010, in Afghanistan from 2012 to 2013, and in a variety of theater security cooperation activities in Africa from 2014 to 2015. The BCT was inactivated in 2015 as part of force reductions.
The 10th Aviation Regiment is an aviation regiment of the U.S. Army.
The 40th Armor Regiment was an armored regiment of the United States Army until the inactivation of its last element, its 1st Battalion, in 1996. It was redesignated and reactivated in 2005 as the 40th Cavalry Regiment and assigned to the 2nd Infantry Brigade Combat Team (Airborne), 11th Airborne Division.
The 4th Brigade Combat Team, 82nd Airborne Division is an inactive Airborne Brigade of the United States Army. The brigade was active from 1968-1969, and from 2006-2014. The brigade conducted three rotations to Afghanistan, in 2007 and 2008, 2009 and 2010, and 2012. The brigade's two infantry battalions deployed for a fourth time in 2013-2014, and became part of other BCTs in the division upon their redeployment.
The 4th Brigade Combat Team, 4th Infantry Division is an inactive brigade of the United States Army. Between 1975 and 1984, the brigade served at Fort Carson, CO, and in Germany. The brigade was reactivated in 2004, and deployed four times in support of the War on Terror, once to Iraq and three times to Afghanistan, before being inactivated in 2015.
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10th Mountain Division 
