At Furnes in Belgium, and at Dunkirk on the coast of France, there were columns of ambulances bringing in an endless tide of wounded. They were laid out stretcher by stretcher in station-yards, five hundred at a time. Some of their faces were masks of clotted blood. Some of their bodies were horribly torn. They breathed with a hard snuffle. A foul smell came from them.

At Chartres they were swilling over the station hall with disinfecting fluid after getting through with one day’s wounded. The French doctor in charge had received a telegram from the director of medical services: “Make ready for forty thousand wounded.” It was during the first battle of the Marne.

“It is impossible!” said the French doctor.⁠ ⁠…