(Updates with new tolls)

Aug 9 (Reuters) - A roadside bomb killed two British soldiers and seriously wounded two others early on Thursday when it detonated near a military convoy driving north of southern Iraq's Rumaila oilfields, the British military said.

A U.S. Marine was killed in combat on Tuesday in the western province of Anbar, the U.S. military said on Thursday. Earlier the U.S. military said that a U.S. soldier was killed by a roadside bomb in western Baghdad on Tuesday.

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

U.S.-LED COALITION FORCES:

United States 3,684

Britain 168

Other nations 129

IRAQIS:

Military Between 4,900 and 6,375#

Civilians Between 69,045 and 75,495*

# = 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.

The U.S-led military coalition toll includes casualties from Iraq and the surrounding area where troops are stationed.

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