List of coalition military operations of the Iraq War in 2004

During the early occupation, a number of widely cited humanitarian, tactical, and political errors by coalition planners, particularly the United States and United Kingdom led to a growing armed resistance, usually called the "Iraqi insurgency" (referred to by the mainstream media and coalition governments). The anti-occupation/anti-coalition forces are believed to be predominantly, but not exclusively, Iraqi Sunni Muslim Arabs, plus some foreign Arab and Muslim fighters, some of the latter tied to al-Qaeda. Several minor coalition members have pulled out of Iraq; this has been widely considered a political success for the anti-occupation forces.

Despite this, there was a reduction in violence throughout Iraq in the start of 2004 due to reorganization within the insurgent forces. During this time the tactics used by coalition forces were studied and the insurgency began to plan a new strategy. The calm did not last long however and once the insurgency had regained its footing attacks resumed and increased. Throughout the remainder of 2004 and continuing into the present day, the insurgency has employed bombings as their primary means of combating the coalition forces. This has led to hundreds of Iraqi civilians and police killed in addition to the coalition forces they were fighting. Many were killed in a series of massive bombings at mosques and shrines throughout Iraq. The bombings indicated that as the relevance of Saddam Hussein and his followers was diminishing, radical Islamists, both foreign and Iraqi was increasing to take their place. An organized Sunni insurgency, with deep roots and both nationalist and Islamist motivations, was becoming clear. The Mahdi Army also began launching attacks on coalition targets and to seize control from the Iraqi security forces. The southern and central portions of Iraq began to erupt in urban guerilla combat as coalition forces attempted to keep control and prepared for a counteroffensive.

In response to insurgent attacks, coalition forces focused on hunting down the remaining leaders of the former regime, culminating in the shooting deaths of Saddam's two sons in July. In all, over 200 top leaders of the former regime were killed or captured, as well as supports and military personnel during the summer of 2004.