Many years ago I heard a story about an incident that allegedly took place at the battle of the Somme on 1st July 1916 at what became the Lochnagar Crater and would like to know if its true. As some people know at 7.28 24 tons of explosive were detonated beneath German positions immediatly before an advance by allied troops along a 12 mile front. The story I have heard is that a British soldier waiting in the trenches for the charges to blow readied himself by placing a leg on the front wall of the trench as he leaned against the rear wall. When the charges blew the shock waves given off were so severe they fractured this soldiers leg so badly it had to be amputated. Is this tale true or a case of Chinese whispers?