The latest death takes the number of US soldiers killed in Iraq to 104 since May 1, when US President George W.
Bush declared major hostilities over.
A statement from the coalition of occupying forces in Iraq says one US soldier was killed and five were wounded in an attack in the town of Fallujah.
It is the third attack in the hotspot town in two days in the wake of a taped message purportedly from ousted Iraqi leader Saddam Hussein, issuing a call to arms against the US-led occupiers.
On the reconstruction front, US officials have stepped up their bid to secure more funds for rebuilding Iraq ahead of the two-day donor conference which opens in Spain on Thursday.
“I hope they will come in a generous manner to help the people of Iraq, to make a statement to the Iraqi people that the international community is there with them and for them,” Secretary of State Colin Powell told business leaders on the sidelines of the annual Asia-Pacific Economic Cooperation (APEC) forum in Thailand.
In a bid to overcome resistance to providing large cash donations, the US has endorsed two key provisions giving non-US players a say in how reconstruction funds are spent, officials said.
Both provisions are to be discussed in Madrid, where organisers hope to meet as far as possible the need for $US36 billion ($A51.8 billion) in reconstruction aid between 2004 and 2007.
Japan has pledged 1.5 billion dollars for next year, but the US requests for aid have met with an icy response from France, Germany and Russia.
The US Congress has approved Bush’s request for $US20.3 billion in civilian reconstruction funds. The European Union has pledged 200 million euros ($A335 million).
Meanwhile, a Human Rights Watch report released Tuesday accused the US military of failing to investigate Iraqi civilian deaths arising from excessive use of force by US troops in Baghdad.