| 2003 invasion of Iraq | |||||||
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| Part of the Iraq War | |||||||
From left to right: Marines of the U.S. 1st Marine Regiment escort Iraqi prisoners of war; a convoy of U.S. military vehicles in a sandstorm; U.S. soldiers watch an enemy building in Baghdad burn; Iraqi civilians cheer as a statue of Saddam Hussein is toppled. | |||||||
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| Belligerents | |||||||
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Coalition forces: With military support from: |
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| Commanders and leaders | |||||||
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Ahmed Chalabi |
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| Strength | |||||||
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Shia Al Mahdi Army: 1600–2800 | ||||||
| Casualties and losses | |||||||
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Coalition: 214 killed 238 dead, 1,000+ wounded |
Estimated Iraqi combatant fatalities: 30,000 (figure attributed to General Tommy Franks) 7,600–11,000 (4,895–6,370 observed and reported) (Project on Defense Alternatives study) 13,500–45,000 (extrapolated from fatality rates in units serving around Baghdad) Total: 7,600–8,000 killed | ||||||
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Estimated Iraqi civilian fatalities: | |||||||

The 2003 invasion of Iraq (20 March 2003 – 1 May 2003) was the invasion committed by the United States, the United Kingdom, Australia, Poland and some other countries against Iraq, to end the rule of Saddam Hussein. The main reason that the invasion started was said to be because the British and American Governments believed that Iraq had dangerous weapons of mass destruction (such as chemical or nuclear weapons) that could be used against other countries. This turned out after the invasion to not be true.
Another reason for the start of the invasion was that many people thought that Abu Musab al-Zarqawi, one of the leaders of al-Qaeda, was hiding in Iraq after the 11 September attacks. Though Saddam Hussein was not involved in the planning of the 11 September attacks, many people accused him of giving al-Qaeda a safe place to hide from the United States. The invasion was extremely controversial. Many British and American people blamed British Prime Minister Tony Blair and the American President, George W. Bush.
American and British paratroopers landed in the far north of Iraq and a few soldiers attacked from the sea, but most invaded from Kuwait in the south. The combined forces proceeded to advance and capture Baghdad. 4,734 NATO soldiers were killed in Iraq war including 4,600 U.S. servicemen, 179 UK servicemen and 139 Other NATO soldiers with a total of 4900 casualties. 31,882 U.S. servicemen and over 3,600 UK servicemen were wounded in Iraq. More than 180,000 Iraqi civilians who were not soldiers were also killed.
The United Nations Secretary-General said that "[F]rom our point of view and from the Charter point of view [the war] was illegal."
In the war, Iraq's conventional military forces were overwhelmed by the approximately 380,000-person U.S. and British-led 30-country18 "coalition of the willing" force, a substantial proportion of which were in supporting roles.