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10th Mountain Division

Active United States Army formation

Top 10 10th Mountain Division related articles

10th Mountain Division
The 10th Mountain Division's shoulder sleeve insignia
Country  United States
Branch  U.S. Army
TypeLight Infantry
SizeDivision (Next 11th Airborne Division)
Part of XVIII Airborne Corps
Garrison/HQFort Drum, New York
Motto(s)Climb to Glory[1]
ColorsRed and Blue
EngagementsWorld War II



War on Terror War in Afghanistan

Iraq War

Operation Atlantic Resolve
Major General Brian Mennes (2019–present)[2]
George P. Hays
James Edward Moore
Thomas L. Harrold
Philip De Witt Ginder
Barksdale Hamlett
James L. Campbell
Franklin L. Hagenbeck
Lloyd Austin
Benjamin C. Freakley
Michael L. Oates
James L. Terry
Mark A. Milley
Distinctive unit insignia of the Division's Headquarters Battalion
Combat service identification badge

The 10th Mountain Division (Light Infantry) is a light infantry division in the United States Army based at Fort Drum, New York. Designated as a mountain warfare unit, the division is the only one of its size in the US military to receive intense specialized training for fighting in mountainous and arctic conditions. More recently, the 10th Mountain has been conducting operations in Iraq, advising and assisting Iraqi Security Forces.

Originally activated as the 10th Light Division (Alpine) in 1943, the division was redesignated the 10th Mountain Division in 1944 and fought in the mountains of Italy in some of the roughest terrain in World War II. On 5 May 1945 the Division reached Nauders, Austria, beyond the Resia Pass, where it made contact with German forces being pushed south by the U.S. Seventh Army. A status quo was maintained until the enemy headquarters involved had completed their surrender to the Seventh. On 6 May, 10th Mountain troops met the 44th Infantry Division of Seventh Army.[3]

Following the war, the division was deactivated, only to be reactivated and redesignated as the 10th Infantry Division in 1948. The division first acted as a training division and, in 1954, was converted to a full combat division and sent to Germany before being deactivated again in 1958.

Reactivated again in 1985, the division was designated the 10th Mountain Division (Light Infantry) to historically tie it to the World War II division and to also better describe its modern disposition. Since its reactivation, the division or elements of the division have deployed numerous times. The division has participated in Operation Desert Storm (Saudi Arabia), Hurricane Andrew disaster relief (Homestead, Florida), Operation Restore Hope and Operation Continue Hope (Somalia), Operation Uphold Democracy (Haiti), Operation Joint Forge (Bosnia and Herzegovina), Operation Joint Guardian (Kosovo), and several deployments as part of the Multinational Force and Observers (Sinai Peninsula).

Since 2001, the 10th Mountain Division (Light Infantry) has been the most deployed unit in the US military.[4] Its combat brigades have seen over 20 deployments, to both Iraq and Afghanistan, in support of Operation Iraqi Freedom and Operation Enduring Freedom.

10th Mountain Division Intro articles: 51



The 10th Division was originally organized in 1918 as a Regular Army and National Army division for World War I. However, it did not go overseas and demobilized in February 1919 at Camp Funston, Kansas. It was redesignated the Panama Canal Division after the war and shares no connection with the 10th Mountain Division activated during World War II.[5]

In November 1939, during the Soviet Union's invasion of Finland, Russian efforts were frustrated following the destruction of two armored divisions by Finnish soldiers on skis.[6] The conflict caught global attention as the outnumbered and outgunned Finnish soldiers were able to use the difficult local terrain to their advantage,[7] severely hampering the Soviet attacks and embarrassing their military.[8] Upon seeing the effectiveness of these troops, Charles Minot Dole, the president of the National Ski Patrol, began to lobby the War Department of the need for a similar unit of troops in the United States Army, trained for fighting in winter and mountain warfare. In September 1940, Dole was able to present his case to General George Marshall, the U.S. Army Chief of Staff, who agreed with Dole's assessment, deciding to create a "Mountain" unit for fighting in harsh terrain. The U.S. Army authorized the formation of the platoon sized Army Ski Patrol in November 1940. The first Patrol was formed at Camp Murray as part of the 41st Infantry Division under Lt. Ralph S. Phelps (later to become commanding General of the 41st).[9] The army, prompted by fears that its standing force would not perform well in the event of a winter attack on the Northeastern coast, as well as knowledge that the German Army already had three mountain warfare divisions, approved the concept for a division.[10] This required an overhaul of U.S. military doctrine, as the concept of winter warfare had not been tested in the army since 1914.[11] At first, planners envisioned ten mountain divisions, but personnel shortages revised the goal to three. Eventually, the 10th Mountain Division would be the only one brought to active duty.[10] Military leaders continued to express concern of the feasibility of a division-sized mountain warfare unit until the fall of 1941,[12] when they received reports that Greek mountain troops had held back superior numbers of unprepared Italian troops in the Albanian mountains during the Greco-Italian War. The Italian military had lost a disastrous 25,000 men in the campaign because of their lack of preparedness to fight in the mountains.[13][14] On 22 October 1941, General Marshall decided to form the first battalion of mountain warfare troops for a new mountain division.[15] The Ski Patrol would assist in its training.[16]

On 8 December 1941, the day after the Japanese attack on Pearl Harbor, the army activated its first mountain unit, the 87th Mountain Infantry Battalion (which was later expanded to the 87th Infantry Regiment) at Fort Lewis, Washington, south of Tacoma.[15] It was the first mountain warfare unit in U.S. military history.[17] The National Ski Patrol took on the unique role of recruiting for the 87th Infantry Regiment and later the division, becoming the only civilian recruiting agency in military history.[15] Army planners favored recruiting experienced skiers for the unit instead of trying to train standing troops in mountain warfare, so Dole recruited from schools, universities and ski clubs for the unit.[18] The 87th trained in harsh conditions, including Mount Rainier's 14,411-foot (4,392 m) peak, throughout 1942 as more recruits were brought in to form the division.[19][20] Initial training was conducted by Olympian Rolf Monsen.[21] A new garrison was built for the division in central Colorado at Camp Hale, at an elevation of 9,200 feet (2,800 m) above sea level.[22][23]

World War II

Lloyd E. Jones observes troops land at Amchitka Island during the Aleutians Campaign, shortly before assuming command of the 10th Light Division.

The 10th Light Division (Alpine) was constituted on 10 July 1943[24] and activated five days later at Camp Hale under the command of Brigadier General Lloyd E. Jones. At the time, the division had a strength of 8,500 out of the 16,000 planned, so the military transferred troops from the 30th, 31st, and 33rd Infantry Divisions along with volunteers from the National Guards of Maine, New Hampshire, Vermont, New York, Michigan, Wisconsin, Minnesota, Iowa, North and South Dakota, Colorado, Wyoming, Montana, Idaho, Utah and Washington State (Specifically men who are from the Rocky Mountains region and those who are from the Northern States specifically close to the 49th Parallel of the US-Canadian Border), to fill out the remainder of the division.[25] This lowered morale and the division faced many difficulties in the new training, which had no established army doctrine.[23] The 10th Light Division was centered on regimental commands; the 85th, 86th, and 87th Infantry Regiments.[26] Also assigned to the division were the 604th, 605th, and 616th Field Artillery battalions, the 110th Signal Company, the 710th Ordnance Company, the 10th Quartermaster Company, the 10th Reconnaissance Troop, the 126th Engineer Battalion, the 10th Medical Battalion, and the 10th Counter-Intelligence Detachment.[26][27] The 10th Light Division was unique in that it was the only division in the army with three field artillery battalions instead of four.[26] It was equipped with vehicles specialized in snow operation, such as the M29 Weasel,[28] and winter weather gear, such as white camouflage and skis specifically designed for the division.[29][30] The division practiced its rock climbing skills in preparation for the invasion of Italy on the challenging peaks of Seneca Rocks in West Virginia.

On 22 June 1944, the division was shipped to Camp Swift, Texas to prepare for maneuvers in Louisiana, which were later canceled. A period of acclimation to a low altitude and hot climate was thought necessary to prepare for this training.[31] On 6 November 1944, the 10th Division was redesignated the 10th Mountain Division.[32] That same month, the blue and white "Mountain" tab was authorized for the division's new shoulder sleeve insignia.[1]


Division infantry cover for an assault squad in northern Italy.

The division, now commanded by Major General George Price Hays, sailed for Italy in two parts, with the 86th Infantry and support leaving Camp Patrick Henry, Virginia on 11 December 1944 aboard the SS Argentina and arriving in Naples, Italy on 22 December. The 85th and 87th Infantry left Hampton Roads, Virginia on 4 January 1945 aboard the SS West Point and arrived on 13 January 1945.[33] By 6 January, its support units were preparing to head to the front lines.[34] It was attached to Major General Willis D. Crittenberger's IV Corps, part of the American Fifth Army, under Lieutenant General Lucian Truscott.[35] By 8 January, the 86th Infantry had moved to Bagni di Lucca near Mount Belvedere in preparation for an offensive by the Fifth Army to capture the mountain along with surrounding high ground, which allowed the Axis to block advances to Po Valley. Starting 14 January, the division began moving to Pisa as part of the Fifth Army massing for this attack.[33]

By 20 January, all three of the 10th's regiments were on or near the front line between the Serchio Valley and Mt. Belvedere. Col. Raymond C. Barlow commanded the 85th Regiment, Col. Clarence M. Tomlinson the 86th, and Col. David M. Fowler the 87th.

Preliminary defensive actions in mid February were followed by Operation Encore, a series of attacks in conjunction with troops of the 1st Brazilian Infantry Division, to dislodge the Germans from their artillery positions in the Northern Apennines on the border between Tuscany and Emilia-Romagna regions, in order to make possible the Allied advance over the Po Valley.[36] While the Brazilian division was in charge of taking Monte Castello and Castelnuovo di Vergato, the 10th Mountain Division was responsible for the Mount Belvedere area, climbing nearby Riva Ridge during the night of 18 February and attacking mount Della Torraccia on 20 February. These peaks were cleared after four days of heavy fighting, as Axis troops launched several counterattacks in these positions.[37]

In early March, the division fought its way north of Canolle and moving to within 15 miles (24 km) of Bologna.[38] On 5 March, while Brazilian units captured Castelnuovo, the 85th and the 87th Infantry took respectively Mound Della Spe and Castel D'Aiano, cutting the Axis routes of resupply and communication into the Po Valley, setting the stage for the next Fifth Army offensive.[37] The division maintained defensive positions in this area for three weeks, anticipating a counteroffensive by the German forces.[38]

The division advancing in Italy in April 1945.

The division resumed its attack on 14 April, attacking Torre Iussi and Rocca Roffeno to the north of Mount Della Spe. On 17 April, it broke through the German defenses, which allowed it to advance into the Po Valley area.[37] It captured Mongiorgio on 20 April and entered the valley, seizing the strategic points Pradalbino and Bomporto.[38] The 10th crossed the Po River on 23 April, reaching Verona 25 April, and ran into heavy opposition at Torbole and Nago.[38] After an amphibious crossing of Lake Garda, it secured Gargnano and Porto di Tremosine, on 30 April, as German resistance in Italy ended.[38] After the German surrender in Italy on 2 May 1945, the division went on security duty. On 5 May 1945 the Division reached Nauders, Austria, beyond the Resia Pass, where it made contact with German forces being pushed south by the U.S. Seventh Army. A status quo was maintained until the enemy headquarters involved had completed their surrender to the Seventh. On the 6th, 10th Mountain Division troops met the 44th Infantry Division of the Seventh Army.[3] Between the 2nd and Victory in Europe Day on 8 May the 10th Mountain Division received the surrender of various German units and screened areas of occupation near Trieste, Kobarid, Bovec and Log pod Mangartom, Slovenia.[38] The division moved to Udine on 20 May and joined the British Eighth Army in preventing further westward movement of ground forces from the Socialist Federal Republic of Yugoslavia.[39]


  • Total battle casualties: 4,072[40]
  • Killed in action: 992[40]
  • Wounded in action: 3,134[40]
  • Missing in action: 38[40]
  • Prisoners of war: 28[40]


Originally, the division was to be sent to the Pacific theater to take part in Operation Downfall, the invasion of mainland Japan, as one of the primary assault forces. However, Japan surrendered in August 1945 following the atomic bombings of Hiroshima and Nagasaki.[41] The division returned to the US two days later.[34] It was demobilized and inactivated on 30 November 1945 at Camp Carson, Colorado.[42] During World War II, the 10th Mountain Division suffered 992 killed in action and 4,154 wounded in action in 114 days of combat.[43] Soldiers of the division were awarded one Medal of Honor (John D. Magrath), three Distinguished Service Crosses, one Distinguished Service Medal, 449 Silver Star Medals, seven Legion of Merit Medals, 15 Soldier's Medals, and 7,729 Bronze Star Medals.[34] The division itself was awarded two campaign streamers.[34]

Cold War

In June 1948, the division was rebuilt and activated at Fort Riley, Kansas to serve as a training division. Without its "Mountain" tab, the division served as the 10th Infantry Division for the next ten years. The unit was charged with processing and training replacements in large numbers. This mission was expanded with the outbreak of the Korean War in 1950. By 1953, the division had trained 123,000 new Army recruits at Fort Riley.[44]

In 1954, the division was converted to a combat division once again, though it did not regain its "Mountain" status.[44] Using equipment from the deactivating 37th Infantry Division, the 10th Infantry Division was deployed to Germany, replacing the 1st Infantry Division at Würzburg, serving as part of the North Atlantic Treaty Organization (NATO) defensive force. The division served in Germany for four years, until it was rotated out and replaced by the 3rd Infantry Division. The division moved to Fort Benning, Georgia and was inactivated on 14 June 1958.[44]


On 13 February 1985, the 10th Mountain Division (Light Infantry) was reactivated at Fort Drum, New York.[44] In accordance with the Reorganization Objective Army Divisions plan, the division was no longer centered on regiments, instead two brigades were activated under the division. The 1st Brigade, 10th Mountain Division (commanded by then Colonel John M. Keane, later 4-Star General and Army Vice Chief of Staff) and Division Artillery were activated at Fort Drum, while the 2nd Brigade, 10th Mountain Division was activated at Fort Benning, moving to Fort Drum in 1988.[45] The division was also assigned a round-out brigade from the Army National Guard, the 27th Infantry Brigade.[46] The division was specially designed as a light infantry division able to rapidly deploy. In this process, it lost its mountain warfare capability, but its light infantry organization still made it versatile for difficult terrain.[47] Equipment design was oriented toward reduced size and weight for reasons of both strategic and tactical mobility.[44] The division also received a distinctive unit insignia.[1]

Structure in 1989

10th Mountain Division (Light) 1989 (click to enlarge)

At the end of the Cold War the division was organized as follows:


In 1990, the division sent 1,200 soldiers to support Operation Desert Storm.[71] Two Infantry Platoons were among those sent. 1st Platoon Bravo Company 1/22 and the 1/22 Scout Platoon. Once in Iraq, the scouts were sent home and First Platoon was left as a counter intelligence force. Performing three-man 24hr patrols through the remainder of their deployment. This platoon was widely regarded as the divisions best at that time. The largest of these units was the 548th Supply and Services Battalion with almost 1,000 soldiers, which supported the 24th Infantry Division (Mechanized) in Iraq. Following a cease-fire in March 1991, the support soldiers began redeploying to Fort Drum through June of that year.[44]

Soldiers of the 10th Mountain Division sweep a Somali village for weapons in 1993.

Hurricane Andrew struck South Florida on 24 August 1992, killing 13 people, leaving another 250,000 homeless and causing damages in excess of $20 billion. On 27 September 1992, the 10th Mountain Division assumed responsibility for Hurricane Andrew disaster relief as Task Force Mountain.[71] Division soldiers set up relief camps, distributed food, clothing, medical necessities and building supplies, as well as helping to rebuild homes and clear debris. The last of the 6,000 division soldiers deployed to Florida returned home in October 1992.[44]

Operation Restore Hope

On 3 December 1992, the division headquarters was designated as the headquarters for all Army Forces (ARFOR) of the Unified Task Force (UNITAF) for Operation Restore Hope. Major General Steven L. Arnold, the division Commander, was named Army Forces commander. The 10th Mountain Division's mission was to secure major cities and roads to provide safe passage of relief supplies to the Somali population suffering from the effects of the Somali Civil War.[71]

Members of the 10th Mountain Division with President George H. W. Bush, January 1993.

Due to 10th Mountain Division efforts, humanitarian agencies declared an end to the food emergency and factional fighting decreased.[72] When Task Force Ranger and the SAR team were pinned down during a raid in what later became known as the Battle of Mogadishu, the 10th Mountain Division provided infantry for the UN quick reaction force sent to rescue them. The 10th Mountain Division had two soldiers killed in the fighting, which was the longest sustained firefight by regular US Army forces since the Vietnam War.[47] The division began a gradual reduction of forces in Somalia in February 1994, until the last soldiers of the 2nd Battalion, 22nd Infantry returned to the United States in March 1994.[72]

Operation Uphold Democracy

Soldiers of the 10th Mountain Division secure Port-au-Prince International Airport in 1994.

The division formed the nucleus of the Multinational Force Haiti (MNF Haiti) and Joint Task Force 190 (JTF 190) in Haiti during Operation Uphold Democracy.[71] More than 8,600 of the division's troops deployed during this operation.[73] On 19 September 1994, the 1st Brigade conducted the Army's first air assault from aircraft carrier USS Dwight D. Eisenhower. This force consisted of 54 helicopters and almost 2,000 soldiers. They occupied the Port-au-Prince International Airport. This was the largest Army air operation conducted from a carrier since the Doolittle Raid in World War II.[72]

The division's mission was to create a secure and stable environment so the government of Haitian President Jean-Bertrand Aristide could be reestablished and democratic elections held. After this was accomplished, the 10th Mountain Division handed over control of the MNF-Haiti to the 25th Infantry Division on 15 January 1995. The division redeployed the last of its soldiers who served in Haiti by 31 January 1995.[73]

Operation Joint Forge

In the fall of 1998, the division received notice that it would be serving as senior headquarters of Task Force Eagle, providing a peacekeeping force to support the ongoing operation within the Multi-National Division-North area of responsibility in Bosnia and Herzegovina.[73] Selected division units began deploying in late summer, approximately 3,000 division soldiers deployed. After successfully performing their mission in Bosnia, the division units conducted a transfer of authority, relinquishing their assignments to soldiers of the 49th Armored Division, Texas National Guard. By early summer 2000, all 10th Mountain Division soldiers had returned safely to Fort Drum.[73]

Operation Joint Guardian

Readiness controversy

A UH-60 Black Hawk helicopter carries soldiers from the 10th Mountain Division on a mission in Afghanistan.

During the 2000 presidential election, the readiness of the 10th Mountain Division became a political issue when George W. Bush asserted that the division was "not ready for duty." He attributed the division's low readiness to the frequent deployments throughout the 1990s without time in between for division elements to retrain and refit.[74] A report from the US General Accounting Office in July 2000 also noted that although the entire 10th Mountain Division was not deployed to the contingencies at once, "deployment of key components—especially headquarters—makes these divisions unavailable for deployment elsewhere in case of a major war".[75] Conservative think tank The Heritage Foundation agreed with these sentiments, charging that the US military overall was not prepared for war due to post-Cold War drawdowns of the US Military.[75] The Army responded that, though the 10th Mountain Division had been unprepared following its deployment as Task Force Eagle, that the unit was fully prepared for combat by late 2000 despite being undermanned.[76] Still, the Army moved the 10th Mountain Division down on the deployment list, allowing it time to retrain and refit.[74]

In 2002, columnist and highly decorated military veteran David Hackworth again criticized the 10th Mountain Division for being unprepared due to lack of training, low physical fitness, unprepared leadership and low morale. He said the division was no longer capable of mountain warfare.[77]

War on Terrorism

Initial deployments

Following the 11 September 2001 attacks, elements of the division, including its special troops battalion and the 1-87th Infantry deployed to Afghanistan as part of Operation Enduring Freedom in late 2001. The division headquarters arrived at Karshi-Khanabad, under Major General Hagenbeck, on 12 December 2001 to function as the Combined Forces Land Component Command (CFLCC) (Forward).[78] This command served as the representative for Lieutenant General Paul Mikolashek, the Third US Army/CFLCC commanding general (CG) in the theater of operations. As such, Hagenbeck's headquarters was responsible for commanding and controlling virtually all Coalition ground forces and ground force operations in the theater, to include security of Coalition airfields in Afghanistan, Uzbekistan, and Pakistan, as well as the logistics operations set up to support those forces.

On 13 February 2002, Mikolashek ordered Hagenbeck to move CFLCC (Forward) to Bagram airfield located at Bagram and 2 days later the headquarters was officially redesignated as Combined Joint Task Force (CJTF) Mountain.[79] It assumed responsibility for the planning and execution of what had then become known as Operation Anaconda.

Elements of the division, primarily 1-87th Infantry, remained in the country until mid-2002, fighting to secure remote areas of the country and participating in prominent operations such as Operation Anaconda, the Fall of Mazar-i-Sharif, and the Battle of Qala-i-Jangi.[32] These 1-87th Infantry soldiers became the first conventional forces to engage in combat in Afghanistan in the US military. The division also participated in fighting in the Shahi Khot Valley in 2002. In June 2002, elements of the 82nd Airborne Division arrived to relieve CJTF Mountain, and in September, Major General John R. Vines and his Combined Task Force 82 relieved CJTF Mountain as the major subordinate headquarters to Combined Joint Task Force 180.[80] Upon the return of the battalions, they were welcomed home and praised by President Bush.[81]

In 2003, the division's headquarters, along with the 1st Brigade, returned to Afghanistan. During that time, they operated in the frontier regions of the country such as Paktika Province, going places previously untouched by the war in search of Taliban and Al-Qaeda forces. Fighting in several small-scale conflicts such as Operation Avalanche, Operation Mountain Resolve, and Operation Mountain Viper, the division maintained a strategy of small units moving through remote regions of the country to interact directly with the population and drive out insurgents.[82] The 1st Brigade also undertook a number of humanitarian missions.[72]

In 2003 and into 2004, the division's aviation brigade deployed for the first time to Afghanistan. As the only aviation brigade in the theater, the brigade provided air support for all US Army units operating in the country. The brigade's mission at that time focused on close air support, medevac missions, and other duties involving combat with Taliban and Al-Qaeda forces in the country. The 10th Mountain Division was the first unit to introduce contract working dogs into southern Afghanistan. In the spring of 2004 they had Patriot K-9 Services supply 20 dog teams based at KAF. The teams were trained to detect explosives and perform patrol duties throughout the region. The brigade returned to Fort Drum in 2004.[83]

Reorganization and Iraq deployments

10th Mountain Soldier on patrol in Nuristan Province.

On the return of the division headquarters and 1st Brigade, the 10th Mountain Division began the process of transformation into a modular division.[84] On 16 September 2004, the division headquarters finished its transformation, adding the 10th Mountain Division Special Troops Battalion. The 1st Brigade became the 1st Brigade Combat Team,[85] while the 3rd Brigade Combat Team, 10th Mountain Division was activated for the first time.[86] In January 2005, the 4th Brigade Combat Team, 10th Mountain Division was activated at Fort Polk, Louisiana.[87] 2nd Brigade Combat Team would not be transformed until September 2005, pending a deployment to Iraq.[47]

10th Mountain Division troops from the 1st Battalion, 32nd Infantry hike through Kunar Province.

In late 2004, 2nd Brigade Combat Team was deployed to Iraq supporting Operation Iraqi Freedom. The 2nd Brigade Combat Team undertook combat operations in western Baghdad, an area of responsibility which included Abu Ghraib, Mansour, and Route Irish. It returned to the US in late 2005.[47] Around that time, the 1st Brigade Combat Team deployed back to Iraq, staying in the country until 2006.[85]

Recent deployments

The division headquarters, 3rd Brigade Combat Team and two Battalion Task Forces from the 4th Brigade Combat Team deployed to Afghanistan in 2006, staying in the country until 2007. The division and brigade served in the eastern region of the country, along the border with Pakistan, fulfilling a similar role as it did during its previous deployment.[88] During this time, the deployment of the brigade was extended along with that of the 4th Brigade, 82nd Airborne Division. It was eventually replaced by the 173rd Airborne Brigade Combat Team which was rerouted from Iraq.[89]

In the winter of 2006, the 10th Aviation Brigade, 10th Mountain Division, was deployed again to Afghanistan to support Operation Enduring Freedom as the only aviation brigade in the theater, stationed at Bagram Air Base, Afghanistan. Named "Task Force Falcon," the brigade's mission was to conduct aviation operations to destroy insurgents and anti-coalition militia in an effort to help build the Afghan National Security Force's capability and allow the Afghan government to increase its capabilities. In addition, the Task Force provided logistical and combat support for International Security Assistance Force forces throughout the country.[90]

10th Mountain Soldiers during an operation in Logar Province.

After a one-year rest, the headquarters of the 10th Mountain Division was deployed to Iraq for the first time in April 2008. The division headquarters served as the command element for southern Baghdad until late March 2009, when it displaced to Basrah to replace departing British forces on 31 March 2009 to coordinate security for the Multinational Division-South area of responsibility, a consolidation of the previously Polish-led south central and British-led southeast operational areas. The 10th Mountain Division headquarters transferred authority for MND-S to the 34th Infantry Division, Minnesota Army National Guard on 20 May 2009.

Specialist John Laursen, a Soldier assigned to 2nd Battalion, 14th Infantry Regiment, 2nd Brigade Combat Team, 10th Mountain Division, hands out boxes of medical supplies to a local Iraqi man during a joint humanitarian aid drop with the Iraqi Army.[91]

The 4th BCT operated in Northeast Baghdad under the 4th Infantry Division headquarters from November 2007 until January 2009. The 10th Mountain participated in larger scale operations, such as Operation Phantom Phoenix.

The 3rd Brigade Combat Team was slated to deploy to Iraq in 2009, but that deployment was rerouted. In January 2009, the 3rd BCT instead deployed to Kunar, Logar and Wardak Provinces, eastern Afghanistan to relieve the 101st Airborne Division, as part of a new buildup of US forces in that country.[92] The brigade was responsible for expanding forward operating bases and combat outposts (COPs) in the region, as well as strengthening US military presence in preparation for additional US forces to arrive.[93]

The 2nd Brigade Combat Team was scheduled to deploy to Iraq in the fall of 2009, as a part of the 2009–2010 rotation to Iraq.[94]

The 1st Brigade Combat Team was scheduled to deploy to Iraq in late 2009, but deployed instead to Afghanistan in March 2010 for 13 months.[95] 1-87th Infantry deployed to Kunduz and Baghlan Provinces, establishing remote combat outposts (COPs) against the Taliban after they had taken control of these provinces over the last several years. Notably, elements of the regiment were responsible for numerous large-scale engagements, including The Battle of Shahabuddin[96] and securing a High Value Target (HVT) after an air assault raid. Some elements of the Brigade deployed to Afghanistan in late January 2013 to Ghazni Provence for nine months.

1-87 Infantry engaging Taliban

The 3rd Brigade Combat Team deployed to Kandahar Province, southern Afghanistan in March 2011, again relieving the 101st Airborne Division. During this deployment, 3rd BCT mainly occupied forward operating bases (FOBs) and combat outposts (COPs) in the Maywand, Zhari, and Arghandab Districts of Kandahar Province. The brigade redeployed to Fort Drum in March 2012 after a twelve-month deployment.

The 4th Brigade Combat Team deployed to Regional Command East, under the 101st Airborne Division from October 2010 until their redeployment in October 2011. The 4th BCT deployed to both Wardak and Logar provinces. During this deployment they went to places such as Chakh Valley in Wardak Province and Charkh Valley in Logar Province in search of elements of the Haqqani Network. In May 2013, the brigade deployed again to Afghanistan returning home in February 2014.[97]

In 2015, Diana M. Holland became the first woman to serve as a general officer at Fort Drum, and the first woman to serve as a deputy commanding general in one of the Army's light infantry divisions (specifically, the 10th Mountain Division.)[98]

In February 2015, 2nd Brigade Combat Team, 10th Mountain Division were deployed to Afghanistan as part of the Resolute Support Mission in the Post ISAF phase of the War in Afghanistan[99] between late summer and early fall 2015, 300 troops from 10th Mountain's headquarters at deployed to Afghanistan in support of Operation Freedom's Sentinel, along with about 1,000 troops from the 3rd Brigade Combat Team.[100] In February 2016, the Taliban began a new assault on Sangin, Helmand Province, the US responded by deploying 500 to 800 troops from 2nd battalion 87th Infantry Regiment, 10th Mountain Division to Helmand Province in order to prop up Afghan army's 215th Corps in the province, particularly around Sangin, joining US and British special operations forces already in the area.[101][102][103]

Between late summer and early fall 2015, 1,250 soldiers from the 1st Brigade Combat Team were deployed to Iraq to support Operation Inherent Resolve.[104]

On 5 December 2019, the Department of the Army announced that the 1st Brigade Combat Team would replace the 3rd Brigade Combat Team, 82nd Airborne Division as part of a unit rotation in support of Operation Freedom's Sentinel.[105] The brigade deployed to Afghanistan in February 2020.

Operation Atlantic Resolve

On 3 November 2016, Stars and Stripes reported that the 10th Combat Aviation Brigade will deploy 1,750 soldiers to eastern Europe in March 2017, in support of Operation Atlantic Resolve – as part of NATO efforts to reassure Eastern Europe in the face of an assertive Russia in response to Russian intervention in Ukraine in 2014. The brigade will arrive with approximately 60 aircraft, including CH-47 Chinooks, UH-60 Blackhawks and medevac helicopters, the brigade will be headquartered in Germany and the brigade's units will be forward-based at locations in Latvia, Romania and Poland.[106]

10th Mountain Division History articles: 231