The following is a timeline of major events during the Iraq War, following the 2003 invasion of Iraq.
An Iraqi insurgency began shortly after the 2003 American invasion deposed longtime leader Saddam Hussein. It is considered to have lasted until the end of the Iraq War and U.S. withdrawal in 2011. It was followed by a renewed insurgency.
After the 2003 invasion of Iraq was completed and the regime of Saddam Hussein was toppled in May 2003, an Iraqi insurgency began that would last until the United States left in 2011. The 2003–2006 phase of the Iraqi insurgency lasted until early 2006, when it escalated from an insurgency to a Sunni-Shia civil war, which became the most violent phase of the Iraq War.
The Islamic Army in Iraq was one of a number of underground Islamist militant organizations formed in Iraq following the 2003 invasion of Iraq by U.S.-led Coalition forces, and the subsequent collapse of the Ba'athist regime headed by Saddam Hussein. IAI was regarded as one of the largest, sophisticated and most influential Sunni insurgent groups in Iraq that led an asymmetrical military insurgency against Coalition forces. The group became known for its grisly videos of kidnappings and attacks on U.S. and Iraqi troops.
The Battle of Abu Ghraib took place between Iraqi Mujahideen and United States forces at Abu Ghraib prison on April 2, 2005.
Abu Ayyub al-Masri, also known as Abu Hamza al-Muhajir, born Abdel Moneim Ezz El-Din Ali Al-Badawi, was the leader of Al-Qaeda in Iraq during the Iraqi insurgency, following the death of Abu Musab al-Zarqawi in June 2006. He was war minister of the Islamic State of Iraq from 2006 to 2010 and prime minister of the Islamic State of Iraq from 2009 to 2010. He was killed during a raid on his safehouse on 18 April 2010.
Mahmoudiyah is a rural city south of Baghdad. Known as the "Gateway to Baghdad," the city's proximity to Baghdad made it central to the counterinsurgency campaign.
Operation Imposing Law, also known as Operation Law and Order, Operation Fardh al-Qanoon or Baghdad Security Plan (BSP), was a joint Coalition-Iraqi security plan conducted throughout Baghdad. Under the Surge plan developed in late 2006, Baghdad was to be divided into nine zones, with Iraqi and American soldiers working side by side to clear each sector of Shiite militias and Sunni insurgents and establish Joint Security Stations so that reconstruction programs could begin in safety. The U.S. military commander in Iraq, David Petraeus, went so far as to say Iraq would be "doomed" if this plan failed. Numerous members of Congress stated the plan was a critical period for the U.S. presence in Iraq.
The Battle of Baqubah II took place during the Iraq War in the capital of the Iraqi province Diyala, to the north-east of Baghdad. It began in early March 2007, when U.S. and Iraqi forces commenced preliminary operations to "establish a presence in Diyala beyond their Forward Operating Base".
Operation Phantom Thunder began on 16 June 2007, when Multi-National Force-Iraq launched major offensive operations against al-Qaeda and other extremist terrorists operating throughout Iraq. It was the largest coordinated military operation since the 2003 invasion of Iraq. Operation Phantom Thunder was a corps level operation, including Operation Arrowhead Ripper in Diyala Province, Operation Marne Torch and Operation Commando Eagle in Babil Province, Operation Fardh al-Qanoon in Baghdad, Operation Alljah in Anbar Province, and continuing special forces actions against the Mahdi Army in southern Iraq and against Al-Qaeda leadership throughout the country. The operation was one of the biggest military operations in Iraq since the U.S. invasion in 2003.
Operation Commando Eagle was a 2007 military operation of the Iraq War. It began on 21 June 2007, when Iraqi and Coalition forces launched a combined ground and air assault operation against al-Qaeda and other extremist terrorists operating in the Mahmudiyah region of Babil province. The action was intended to curb terrorist activity southwest of Baghdad through a mix of helicopter assaults and Humvee-mounted movements.
Operation Marne Avalanche was a US military operation that occurred in southern Baghdad in July 2007 as part of Operation Phantom Thunder. The goal of the offensive operation was to stop southern Baghdad from being used as a haven and to prevent the movement of weapons, munitions and insurgent activity into Baghdad.
Operation Alljah was an operation launched by Coalition forces in Iraq, mainly U.S. Marines, in June 2007 to secure the neighborhoods of Fallujah. The strategy of the operation was somewhat based on a successful operation in Ramadi conducted in 2006. Insurgents in the town of Karma nearby were also targeted during the operation, which was part of the overall operation Phantom Thunder.
Operation Phantom Strike was a major offensive launched by the Multi-National Corps – Iraq on 15 August 2007 in a crackdown to disrupt both the al-Qaeda-affiliated Islamic State of Iraq and Shia insurgent operations in Iraq. It consisted of a number of simultaneous operations throughout Iraq focused on pursuing remaining ISI terrorists and Iranian-supported insurgent groups. It was concluded in January 2008 and followed up with Operation Phantom Phoenix.
Operation Phantom Phoenix was a major nationwide offensive launched by the Multinational Force Iraq (MNF-I) on 8 January 2008 in an attempt to build on the success of the two previous corps-level operations, Operation Phantom Thunder and Operation Phantom Strike and further reduce violence and secure Iraq's population, particularly in the capital Baghdad. The offensive consisted of a number of joint Coalition and Iraqi Army operations throughout northern Iraq as well as in the southern Baghdad Belts.
The 2008 Nineveh campaign was a series of offensives and counter-attacks between insurgent and Coalition forces for control of the Nineveh Governorate in northern Iraq in early-to-mid-2008. Some fighting also occurred in the neighboring Kirkuk Governorate.
The Baghdad Belts are the residential, agricultural and industrial areas, as well as communications and transportation infrastructure that encircle the Iraqi capital and connect it to other areas in Iraq. In the Iraq War, they were used by insurgents as staging points for operations in the capital.
The siege of Sadr City was a blockade of the Shi'a district of northeastern Baghdad carried out by US and Iraqi government forces in an attempt to destroy the main power base of the insurgent Mahdi Army in Baghdad. The siege began on 4 April 2004 – later dubbed "Black Sunday" – with an uprising against the Coalition Provisional Authority following the government banning of a newspaper published by Muqtada Al-Sadr's Sadrist Movement. The most intense periods of fighting in Sadr City occurred during the first uprising in April 2004, the second in August the same year, during the sectarian conflict that gripped Baghdad in late 2006, during the Iraq War troop surge of 2007, and during the spring fighting of 2008.
Arab Jibor is a neighborhood of Baghdad, Iraq. It is a predominantly Sunni area to the immediate south-east of Baghdad that lies to the west of the Tigris River. It has an estimated population 12,00 of which 80% are Sunni. It is a fertile, rural area with many canals and difficult terrain. During the era of Saddam Hussein, many influential Sunnis, including Uday and Qusay Hussein, had weekend homes in the area.
Joint Special Operations Command Task Force in the Iraq War was a joint American and British special operations unit, of which little is publicly known. It is described as a "hunter-killer team" with its core made up of the United States Army's 1st Special Forces Operational Detachment-Delta and the 75th Ranger Regiment, as well as the United States Naval Special Warfare Development Group and members of the United States Air Force's 24th Special Tactics Squadron, all under Joint Special Operations Command (JSOC) and elements from the United Kingdom Special Forces, including the Special Air Service, Special Boat Service (SBS), Special Reconnaissance Regiment (SRR), 18 (UKSF) Signal Regiment and the Special Forces Support Group (SFSG). The unit was reported to be responsible for the cross border raid into Syria from Iraq in October 2008 that resulted in eight deaths including Abu Ghadiya, along with several US operations in the Horn of Africa targeting al-Qaeda.
United States 
New Iraqi Army 
Islamic state of Iraq 
