Gys pulled himself free and sat up, seeming dazed for the moment. Then he rubbed his head briskly with both hands, collected his nerve and slowly rose to his feet. He cast fearful glances at the firing line, but the demand for his surgical skill was a talisman that for a time enabled him to conquer his terror. With frightened backward glances he ran to the ambulance and made a dive into it as if a pack of wolves was at his heels.