Direct proof of use
Vehicle-borne improvised explosive devices were documented in the 2003 Iraq War from the major-combat phase into the post-invasion insurgency. An Association of the U.S. Army paper on suicide bombings in Operation Iraqi Freedom records an Iraqi vehicle-borne suicide attack at Najaf on March 29, 2003 that killed four U.S. soldiers, and it describes attempted explosive-laden vehicle attacks against U.S. mechanized columns around Baghdad in early April 2003.
The same study records a post-major-combat sequence of vehicle attacks, including the August 7, 2003 truck bombing of the Jordanian Embassy in Baghdad and the August 19, 2003 suicide-initiated VBIED attack on the United Nations headquarters at the former Canal Hotel in Baghdad. United Nations material on the Canal Hotel bombing separately confirms that the U.N. headquarters in Baghdad was largely destroyed by a bomb attack on August 19, 2003.
A 2005 Congressional Research Service report describes the Iraq IED threat as expanding to vehicle-borne IEDs, with insurgents driving cars loaded with explosives into targeted groups of service members. CRS also described vehicular bombs as an aggressive insurgent innovation in Iraq, with many of those attacks driven by suicide bombers.
Sources: Suicide Bombings in Operation Iraqi Freedom, Improvised Explosive Devices in Iraq, 20 years since the Canal Hotel bombing
Timeline
On March 29, 2003, during major combat operations, AUSA records the first successful suicide attack against U.S. forces in Iraq at Najaf, identifying it as an Iraqi vehicle-borne suicide attack against a U.S. military checkpoint.
On August 7, 2003, after the end of major combat, AUSA records a truck bombing at the Jordanian Embassy in Baghdad. It treats the attack as the first post-major-combat suicide bombing in its chronology and as a signal of concerted suicide bombing in support of the Iraqi insurgency.
On August 19, 2003, the United Nations headquarters in Baghdad was struck at the former Canal Hotel. AUSA identifies the attack as a suicide-initiated VBIED truck assault against the front of the headquarters; U.N. material confirms the date, location, and destruction of the Canal Hotel headquarters.
Sources: Suicide Bombings in Operation Iraqi Freedom, 20 years since the Canal Hotel bombing
Operational role
In the 2003 Iraq War, VBIEDs were used by Iraqi insurgent, militia, and jihadist actors rather than by U.S., coalition, or Iraqi government forces. The documented roles were attacks on checkpoints and convoys, attacks on diplomatic and humanitarian sites, and insurgent bombings intended to pressure coalition stabilization and reconstruction efforts.
The sources separate vehicle-borne use from general IED possession. AUSA's chronology identifies specific vehicle, car, and truck suicide attacks in Iraq, while CRS describes vehicle-borne IEDs as a distinct part of the Iraq insurgent IED threat against service members at checkpoints and in vehicles.
The cited record also shows a transition from battlefield and checkpoint attacks during the invasion period to strategic urban bombings after major combat. AUSA links the post-major-combat VBIED pattern to attacks on the Jordanian Embassy, the United Nations headquarters, the International Committee of the Red Cross, Iraqi police, Shi'ia religious venues, political figures, and coalition-related sites.
Sources: Suicide Bombings in Operation Iraqi Freedom, Improvised Explosive Devices in Iraq
