Just to add to the pot, links regarding Captain Twentyman.
http://www.chavasse.u-net.com/chavasse.html
http://www.liverpoolscottish.org.uk/...inter1914b.htm

Captain Arthur Twentyman was the Regiments first casualty during WW1. On being brought to the field hospital, having been shot in the chest by a sniper he was trying to dislodge, he was treated by a doctor who was to receive the Victoria Cross...twice.