At the 1918 Battle of the Somme, a British cavalry officer orders a search party to follow a dozen German troops into No Man's Land, swearing he saw them go underground. He was advised against it as the sun was setting – soon, the legend says, wild, ghoul-like men will feast on the Germans and kill anyone who gets in the way.  Of all the military myths and legends that sprung from World War I, there is possibly no greater mystery – and nothing closer to the men in the trenches – than the Wild...