Electronic ink to be used to cloak tanks

Unlike conventional forms of camouflage, the images on the hull would change in concert with the changing environment always insuring that the vehicle remains disguised.

In Helmand, for example, all armoured vehicle have desert sand coloured camouflage, which is of little use in the "Green Zone", an area of cultivation where crops are grown and the Taliban often hide.

Up until recently such concepts were thought to be the stuff of science fiction but scientists at the defence company BAE Systems now believe battlefield "invisibility" will soon become science fact.