One of the strangest stories of the two world wars is that of Britain's
Camouflage Unit, when a group of art-masters and painters were brought together to build dummy armies to deceive the enemy.
Martin Wainwright meets the men who built decoy towns on the moors of northern England and false railheads in the Western Desert.
Producer Wendy Pilmer
Contributors Unknown: Martin Wainwright
Producer: Wendy Pilmer