A British advance has just begun, and the surgeons of a Divisional Collecting Station near the Somme are awaiting the arrival of the first laden stretcher-bearers. In a few minutes the three officers will be at work, perhaps for twenty-four hours on end. At one Casualty Clearing Station a distinguished surgeon performed, without resting, nineteen difficult operations, each lasting more than an hour, in cases of severe abdominal wounds, where delay would have meant the loss of life. In almost every case the man was saved. Another surgeon operated for thirty-six hours without relief. Such devotion is not exceptional in the R.A.M.C.