March 20:

-- 0235 GMT: The United States launches war on Iraq with limited air strikes on Baghdad, after Iraqi President Saddam Hussein rejects a US deadline to leave the country by 0100 GMT

March 21:

-- The United States launches 1,000 cruise missiles on hundreds of targets in Baghdad and elsewhere

March 22:

-- US troops meet stiff resistance around the key port of Umm Qasr and in Nasiriyah, a key crossing over the Euphrates River

March 23:

-- Iraqi television shows pictures of dead US soldiers and five captured US troops

-- US air raids pound Baghdad, the northern city of Mosul and positions held by Kurdish Islamist group allegedly linked to al-Qaeda

-- A US soldier is detained after a grenade attack that killed one US soldier and wounded 12 in northern Kuwait

March 24:

-- Iraq shoots down two US Apache helicopters

-- Iraq's northern oil capital of Kirkuk is rocked by 24 hours of bombardment

March 25:

-- British and US forces take control of the deep-water port of Umm Qasr, as a fierce sandstorm slows down another flank

-- US President George W. Bush asks Congress to approve a package of 74.7 billion dollars to finance the war

March 26:

-- Iraq says 14 Iraqis are killed when missiles hit a Baghdad residential and market area

-- US-led forces bombard the state television building in Baghdad, taking main TV channels briefly off the air

March 27:

-- 1,000 US paratroopers parachute into the mountainous Kurdish-held north

-- Mines discovered in the port of Umm Qasr delay the first shipment of British aid

-- Bush and British Prime Minister Tony Blair hold a summit, predicting victory while warning the conflict could drag on

March 28:

-- At least 30 people are killed in an air strike on a busy Baghdad market, Iraqis say

-- Hundreds of Iraqi families flee Basra

March 29:

-- A suicide car bombing kills four US soldiers in central Iraq

-- Invading US and British forces destroy a building hosting a meeting of some 200 members of Iraq's ruling Baath party in the Basra region, a US general says

March 30:

-- US military leaders warn of a long battle for Baghdad

-- US withdraws war material prepositioned in southeastern Turkey

March 31:

-- US forces report their first serious battle with Iraq's elite Republican Guard, south of Baghdad

-- The information ministry in Baghdad is again hit by a missile

-- Hundreds of British Royal Marines launch a major assault to secure a suburb southeast of the key southern city on Basra

April 1:

-- US forces shoot dead seven women and children at a military checkpoint

-- Coalition warplanes pound Iraqi army positions at the northern oil city of Kirkuk

April 2:

-- US forces attack four elite Republican Guard divisions at Karbala in central Iraq

-- US special forces rescue 19-year-old US soldier, Jessica Lynch, missing since her supply convoy was ambushed on March 23

-- Saddam says in a message read on satellite TV that only a third of Iraq's armed forces have engaged in the battle so far

-- US Secretary of State Colin Powell wins an accord from Turkey to use its territory to resupply troops in Iraq

April 3:

-- US troops reach Baghdad airport, 20 kilometres (12 miles) from the city centre

-- Kurdish fighters backed by US planes clash with Iraqi forces for control of an army command HQ in Khazer on the road to the northern oil city of Mosul

-- Coalition forces say they now hold more than 9,000 Iraqi prisoners of war

-- Three coalition soldiers, a pregnant woman and the driver of her car are killed when the vehicle explodes close to a US checkpoint near Hadithah Dam

April 4:

-- US forces capture large parts of Baghdad airport and deploy on the tarmac but do not seize the airport buildings

-- Some 2,500 Iraqi troops reported surrendered to US Marines between Baghdad and Al-Kut

-- Kurdish fighters cross a bridge near the strategic northern junction of Khazer after more than 24 hours of fierce fighting

-- Expatriate UN humanitarian workers return to Iraq.

April 5:

-- US forces make their first ground advance into Baghdad, reportedly killing hundreds of Iraqis, but acknowledge the fight for Baghdad is far from finished

-- US special forces and Iraqi Kurd rebels cut off the southern exits from the northern oil city of Kirkuk, Kurdish military sources say

-- The US 101st Airborne Division launches an air assault to secure the central town of Karbala

-- British soldiers discover hundreds of human remains in an abandoned Iraqi military base in southern Iraq

-- Iranian President Mohammad Khatami and Iraq's main Shiite opposition leader demand an end to the war and the establishment of United Nations rule in Iraq

-- US Secretary of State Colin Powell says the United States has no intention of invading Iran and Syria

April 6:

-- Four US special forces troops and 12 Kurdish fighters are killed and dozens wounded near Arbil in northern Iraq when US aircraft mistakenly bomb a joint convoy in northern Iraq, Kurdish sources say

The US military acknowledges that one of its warplanes might have attacked the convoy

-- The BBC says one of its translators was killed apparently by the US friendly fire, and a correspondent injured

-- US troops fight their way around Baghdad in a drive to encircle the capital and isolate the regime of Saddam Hussein, officers say. Artillery, mortar, machine gun and rocket fire is heard in southern Baghdad

-- US Deputy Defense Secretary Paul Wolfowitz says the Iraqi government still controls large parts of Baghdad

-- President Saddam Hussein orders Iraqi "fighters" to join any unit they reach to battle coalition forces taking up positions around the capital

-- British tanks roll into the centre of Basra, the Qatar-based Arabic satellite television station Al-Jazeera reports

-- One US soldier is killed and eight others wounded during high intensity fighting in the city of Karbala, a spokesman for the 101st Airborne Division says

-- Several people are injured when a convoy evacuating the Russian ambassador from Baghdad comes under fire. US Central Command in Qatar says the alleged shooting took place on territory controlled by Iraq and that no US-led coalition forces were in the area

-- a US Navy spokesman says coalition naval forces have put out of action an Iraqi pilot ship suspected of laying mines in the Gulf

-- US forces have smashed most of the six active Republican Guard divisions defending the Iraqi regime, a US army intelligence officer says

-- Egyptians, Jordanians, Saudis and Syrians are fighting alongside Iraqi troops with tactics including suicide bombings which left two marines dead, US officers say

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