According to the report on the news this morning the American attacked the British tanks even though they were displaying the correct friendly insignia; they had the friendly infra-red lights on; they were flying the Union Jack; and they lit friendly coloured flares (red). And the guy kept coming in for another attack until he had wiped out two tanks.

A very sad day - the actions of the American were deliberate. But, given the history of America killing friendlies, he'll get away scot free.