The 1st Infantry Division is a combined arms division of the United States Army, and is the oldest continuously serving division in the Regular Army. It has seen continuous service since its organization in 1917 during World War I. It was officially nicknamed "The Big Red One" after its shoulder patch and is also nicknamed "The Fighting First." The division has also received troop monikers of "The Big Dead One" and "The Bloody First" as puns on the respective officially sanctioned nicknames. It is currently based at Fort Riley, Kansas.
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 Combat Aviation Brigade, 1st Infantry Division is the Army Aviation formation of the United States Army's 1st Infantry Division. The current commander of this brigade is Colonel Chad P. Corrigan.
The 18th Aviation Brigade is an inactive aviation brigade of the United States Army. Its initial formation in 1987 drew upon the resources of the 269th Aviation Battalion, originally formed in 1966.
Majid al Tamimi Airbase, officially known as the Tikrit Air Academy and formerly as Al Sahra Airfield is an air installation near Tikrit in northern Iraq. The installation is approximately 170 kilometers north of Baghdad and 11 kilometers west of the Tigris River. Prior to 2003, Al Sahra Airfield was the main base of the Iraqi Air Force Air Academy. The Marines from Task Force Tripoli captured the base from the Iraqi Army during the 2003 U.S. invasion of Iraq and turned it over the United States Army who used it as the headquarters of the United States Division–North. The airfield is served by two main runways measuring 9,600 feet (2,900 m) long with a shorter runway measuring 7,200-foot (2,200 m). The Americans named the airfield after Captain Michael Scott Speicher, a United States Navy pilot who was killed in action in Iraq during the 1991 Gulf War.
The 229th Aviation Regiment is an aviation unit of the United States Army.
The 12th Combat Aviation Brigade is a Combat Aviation Brigade of the United States Army. It was first organized as the 12th Aviation Group at Fort Moore, Georgia, on 18 June 1965.
The 185th Aviation Brigade is an aviation brigade of the United States Army. It is a unit of the Mississippi Army National Guard with units throughout the state of Mississippi.
A Combat aviation brigade (CAB) is a multi-functional brigade-sized unit in the United States Army that fields military helicopters, offering a combination of attack/reconnaissance helicopters, medium-lift helicopters, heavy-lift helicopters, and MEDEVAC capability.
The 4th Aviation Regiment is an aviation regiment of the United States Army, tracing its history back to 1957.
The Combat Aviation Brigade, 101st Airborne Division is a Combat Aviation Brigade (CAB) of the United States Army. It was first organized in July 1968 as an aviation group and stands as the most decorated aviation unit in the United States Army. It was redesignated an aviation brigade in 1986. It has served in almost every single military operation since the Vietnam War. In support of the Global War on Terror, the CAB has distinguished itself as the military's premiere combat aviation unit during its two deployments to Iraq and five deployments to Afghanistan. The brigade has flown hundreds of thousands of hours during these combat tours, transporting millions of troops around the battlefield and providing close air support/aerial reconnaissance. The 101st broke its own record for longest air assault in history during the invasion of Iraq in 2003. Previously, the longest air assault was conducted in 1991 during Operation Desert Storm.
The 107th Cavalry Regiment, Ohio Army National Guard, is a parent regiment under the U.S. Army Regimental System, with headquarters at Hamilton, Ohio. It currently consists of the 2nd Squadron, 107th Cavalry Regiment, part of the 37th Infantry Brigade Combat Team (BUCKEYE), Ohio National Guard located throughout southwest Ohio.
The 11th Expeditionary Combat Aviation Brigade is a Combat Aviation Brigade in the United States Army Reserve. The unit's lineage can be traced to the prior lineage and insignia of the 11th Aviation Group which was last headquartered in Illesheim, Germany in 2005. It is one of two aviation brigades of Army Reserve Aviation Command. The brigade consists of a headquarters company, two Black Hawk assault battalions, and one fixed wing battalion. The brigade was activated in its current formation on 16 September 2016.
The 1st Battalion, 107th Cavalry Regiment was a unit of the Ohio Army National Guard, with troops in multiple locations throughout northeastern Ohio and has served in the United States of America's major wars and conflicts since 1898 until its inactivation on 31 August 2007.
The 2nd Aviation Regiment is an aviation regiment of the U.S. Army.
The 3rd Aviation Regiment is a regiment of the United States Army Aviation Branch. It operates the Boeing AH-64 Apache attack helicopter, Sikorsky UH-60 Black Hawk helicopter, and Boeing CH-47 Chinook helicopter. It has been associated with the 3rd Infantry Division for some time.
The 10th Aviation Regiment is an aviation regiment of the U.S. Army.
The 82d Aviation Regiment, part of the U.S. Army, has three battalions and one separate company under the Combat Aviation Brigade, 82d Airborne Division. The brigade also has the 1st Squadron, 17th Cavalry Regiment and the 122d Aviation Support Battalion. The lineages for the Combat Aviation Brigade, 82d Airborne Division and its subordinate units of the 82d Aviation Regiment, although often mistaken for one another, are separate.
Forward Operating Base Shank is a former Forward operating base of the U.S. military, located in Logar Province of eastern Afghanistan, about 12 km south-east of the city of Baraki Barak. During Operation Enduring freedom, FOB Shank was one of the most heavily rocketed forward operating bases in Afghanistan. In 2014, the base was turned over to Afghan National Army, who established Camp Maiwand at the northern end of the FOB. American forces later returned and reoccupied the southern portion of the FOB, under the name Camp Dahlke.
The 501st Aviation Regiment is an aviation regiment of the US Army. It draws its history from the original aviation battalion of the 1st Armored Division, the 501st Aviation Battalion. The 501st Aviation Battalion was active with the division in the mid-1980s. It has always been associated with the 1st Armored Division.
United States 
United States Army Aviation Branch 
