Then we returned to the ambulance headquarters and in an open tent shared the excellent rations which the field service provides for its workers. We were sitting with the French lieutenant and discussing the values of rhythm in prose when the boys shouted to us from the next field. An aeroplane was dipping over an anchored sausage-shaped observation balloon. The aeroplane had marked its victim, which could not escape, as a bird darts for a worm. The balloon opened up into flame and fell through thirty seconds, burning with a dull red. The hours we had just spent of work and excitement seemed to me fairly crowded, but they were mild in the life of the field service. They pound away overtime and take ugly hazards and preserve a boy's humor. More young men of the same stuff are needed at once for this American Ambulance Field Service. The country is full of newly made college graduates, wondering what they can make of their lives. Here is the choicest service in fifty years offered to them. Even a jitney wears out. Bump it in the carburetor enough times, rake it with shrapnel, and it begins to lose its first freshness. More full sections of cars should be given. The work is in charge of Piatt Andrew, who used to teach political economy in Harvard, was later Director of the Mint, Assistant Secretary of the Treasury and secretary of Senator Aldrich's Monetary Commission. [Illustration: A. Piatt Andrew, who, as Director, has raised the American Ambulance Field Service from a small beginning to a powerful factor in rescue work.] As soon as twilight fell we started on the nightly round. Here was Section 4 of the American Ambulance doing hot service for Hill 304 and Dead Man's Hill. It was on this ride that I saw the real Verdun, the center of the deadliest action since men learned how to kill. The real Verdun is the focused strength of all France, flowing up the main roads, trickling down the side roads and overflowing upon the fields. The real Verdun is fed and armed by the thousands of motor cars that bray their way from forty miles distant, by the network of tiny narrow gauge railways, and by the horses that fill the meadows and forests. Tiny trucks and trains are stretched through all the sector. They look like a child's railroad, the locomotive not more than four feet high. They brush along by the road, and wander through fields and get lost in woods. The story goes in the field service that one of these wee trains runs along on a hillside, and just back of it is a battery of 220's which shoot straight across the tracks at a height of three feet. The little train comes chugging along full of ammunition. The artillery men yell "Attention," and begin firing all together. The train waits till there seems to be a lull, and goes by under the muzzles.