The 2nd Infantry Division ("Indianhead") is a formation of the United States Army. Since the 1960s, its current primary mission is the pre-emptive defense of South Korea in the event of an invasion from North Korea. There are approximately 17,000 soldiers in the 2nd Infantry Division, with 10,000 of them stationed in South Korea, accounting for about 35% of the United States Forces Korea personnel. Denoted the 2nd Infantry Division-ROK/U.S. Combined Division (2ID/RUCD), the division is augmented by rotational Brigade Combat Teams (BCTs) from other U.S. Army divisions.
The 1st Infantry Division (1ID) 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.
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.
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 4th Brigade, 2nd Infantry Division ("Raiders") is an inactive Stryker Brigade Combat Team (SBCT) of the United States Army. The brigade was activated at Fort Lewis, Washington on 1 June 2006 by reflagging the 2nd Stryker Cavalry Regiment. The 4th Stryker Brigade had the distinction of being the last U.S. Army combat brigade to serve in support of Operation Iraqi Freedom. The brigade deployed three times in support of the War on Terror, to Iraq from 2007–2008 and from 2009–2010, and to Afghanistan from 2012–2013 before inactivating in March 2014.
Combined Joint Task Force – 76 (CJTF-76) was a US led subordinate formation of Combined Forces Command – Afghanistan (CFC-A) headquartered in Kabul, Afghanistan. It was active from the time CFC-A stood up to the time the International Security Assistance Force (ISAF) took full command of the coalition military operations in Afghanistan in October 2006. CFC-A reported in its turn to United States Central Command. While CFC-Afghanistan was supposed to have inactivated sometime after November 30, 2006, CJTF-76 remained as a headquarters for ISAF's Regional Command East. CJTF-76 was replaced by Combined Joint Task Force 82, led by the 82nd Airborne Division, in the middle of 2007.
Operation Medusa was a Canadian-led offensive during the second Battle of Panjwaii of the War in Afghanistan. The operation was fought primarily by the 1st Battalion, The Royal Canadian Regiment Battle Group and other elements of the International Security Assistance Force, including A Co, 2-4 Infantry BN, 4th BDE, 10th Mtn Division, supported by the Afghan National Army and a team from the United States Army's 1st Battalion, 3rd Special Forces Group (Airborne) augmented by C Company, 2nd Battalion, 87th Infantry Regiment of the 10th Mountain Division. Its goal was to establish government control over an area of Kandahar Province centered in the district of Panjwayi some 30 kilometres (19 mi) west of Kandahar city. A tactical victory, it resulted in the deaths of 12 Canadian soldiers; five during the major combat operations, five in bombings, and two in a mortar/RPG attack during the reconstruction phase of the operation. Fourteen British military personnel were also killed when their plane crashed. Despite suffering a brutal battlefield defeat, the Taliban retained their presence in Kandahar province and did not lose their will to fight, leading to the subsequent Operation Falcon Summit. Nonetheless, Operation Medusa was at the time the most significant land battle ever undertaken by NATO.
Forward Operating Base Salerno is a former forward operating base used by the United States Armed Forces from 2002 to 2013 during Operation Enduring Freedom. It is located in the southeastern province of Khost, Afghanistan, near the city of Khost. On 1 November 2013, U.S. forces withdrew from FOB Salerno and transferred control of the installation to the Afghan National Army.
US and NATO International Security Assistance Force (ISAF) operations, alongside Afghan National Army forces, continued against the Taliban through 2007.
The 64th Armor Regiment is an armor regiment of the United States Army, organized under the United States Army Regimental System. It is descended from the 758th Tank Battalion (Light) that served in the Italian campaign during World War II. Redesignated as the 64th Tank Battalion, it was assigned to the 3rd Infantry Division during the Korean War and it spent most of the Cold War stationed in West Germany before elements were transferred to Ft. Stewart, Georgia in the late 1990s. The regiment participated in Desert Shield, Desert Storm, Desert Fox, Desert Spring, Operation Iraqi Freedom and Operation Enduring Freedom.
The 52nd Infantry Regiment is an infantry regiment of the United States Army.
United States and NATO International Security Assistance Force (ISAF) operations, alongside Afghan National Army forces, continued against the Taliban through 2008.
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
Train Advise Assist Command – East was a multinational military formation, part of NATO's Resolute Support Mission within Afghanistan. Until 2014 it was designated Regional Command East, part of the International Security Assistance Force (ISAF). The United States Army provided the force headquarters. The command headquarters was located in Laghman Province.
Operation Moshtarak, also known as the Battle of Marjah, was an International Security Assistance Force (ISAF) pacification offensive in the town of Marjah, Helmand Province, Afghanistan. It involved a combined total of 15,000 Afghan, American, British, Canadian, Danish, and Estonian troops, constituting the largest joint operation of the War in Afghanistan up to that point. The purpose of the operation was to remove the Taliban from Marja, thus eliminating the last Taliban stronghold in central Helmand Province. The main target of the offensive was the town of Marjah, which had been controlled for years by the Taliban as well as drug traffickers.
Operation Dragon Strike was a NATO counter-insurgent mission in Kandahar province, Afghanistan, against Taliban forces, which started on September 15, 2010.
Task Force Kandahar (TFK) was the formation conducting the International Security Assistance Force (ISAF) mission in Kandahar Province under ISAF Regional Command South. When it concluded its mission in summer 2011, the formation included a Canadian Forces battle group, three U.S. Army battalions, an engineer regiment, a signal squadron, Operational Mentor and Liaison Teams (OMLTs), and contributions to Operational Mentor and Advisory Teams (OMATs) and the Police Operational Mentor and Liaison Team (P-OMLT).
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 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.
Canadian Armed Forces 
United States Army 
