May 18 (Reuters) - The U.S. military said on Thursday three soldiers had been killed and one wounded when their patrol was hit by a roadside bomb south of Baghdad.

Following are the latest figures for military deaths in Iraq since the U.S.-led invasion in March 2003:

U.S.-LED COALITION FORCES:

United States 3,401

Britain 148

Other nations 126

IRAQIS:

Military Between 4,900 and 6,375#

Civilians Between 63,929 and 70,023*

# = Think-tank estimates for military under Saddam Hussein killed during the 2003 war. No reliable official figures have been issued since new security forces were set up in late 2003.

* = From www.iraqbodycount.net (IBC), run by academics and peace activists, based on reports from at least two media sources. IBC says on its Web site that the figure underestimates the true number of casualties.

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