The Pentagon has barred US media from filming the coffins of US service members arriving at Dover Air Force Base in Delaware.

But the Louisiana National Guard allowed a CBS news crew on Wednesday to film the arrival of six soldiers' coffins at the Naval Air Station Joint Reserve Base in Belle Chasse, near New Orleans, Louisiana. 

Despite the Pentagon request, Lieutenant-Colonel Pete Schneider, a spokesman for the Louisiana National Guard told CBS: "What we thought was, we're going to do what the family asked us to do." 

Footage broadcast by CBS showed an honour guard carrying the soldiers' flag-draped coffins out of an aircraft, watched by grieving families, to six waiting hearses. 

The six soldiers, who had served in the Louisiana National Guard, all died last Thursday after their armoured vehicle struck a roadside bomb in Baghdad. 

It was the largest number of US troops killed in a single attack since last month's bombing in a military mess hall at a base near Mosul that killed 14 US soldiers.