We will try to picture a typical railhead. It is about 6 a.m. Drawn up in the yard of some country station, possibly one that has been blown to bits by shell fire, are one or more goods trains. They are composed of large closed-in trucks, each of which is marked "Hommes 40. Chevaux [en long] 8." One reads this for the first time with feelings of sympathy, for either the "hommes" or the "chevaux." But, for the trucks we are going to deal with, the inscription is misleading, for they actually contain rations for men and horses, and go to make up a supply train. The Column Supply Officer arrives in his car and "takes over the train" from the Railhead Supply Officer. The sealed trucks are opened up by the supply personnel. A convoy of perhaps sixty to eighty empty motor-lorries appears on the scene. They draw up outside the railhead and are checked into the yard in batches and detailed for the load they are to carry. Entering the yard, they "back" one by one up against the open trucks and are loaded up from the train. The grocery trucks in particular present a scene of great animation. The men who "issue" the groceries are experts at their job, and can ladle out tea or sugar and cut off given weights of cheese and bacon with a rapidity which is amazing. So accurate are they, through long practice, that weights and scales are almost unnecessary. Each railhead has attached to it several officers of considerable importance, namely: Railway Transport Officer, Railhead Supply Officer, Railhead Ordnance Officer, and a representative of the Assistant Military Forwarding Officer, officially designated and known only by their initials, R.T.O., R.S.O., R.O.O., and A.M.F.O. respectively—not forgetting the "Commissaire Militaire," an officer of the French Army, usually of advanced age and senior rank, who is the liaison officer between the French and British Armies in matters of traffic regulation and organization. The only other personnel at railheads are a few military police, a handful of A.S.C. details, and usually a company or so of some line regiment in charge of a subaltern. These latter are employed as sentries over trains and on various fatigues, and are usually part of the remnants of a battalion that has had a rough time in the trenches and is out on rest, awaiting the arrival from England of reinforcements to bring it up once more to its fighting strength. The duties of the R.T.O. include all matters in connection with the regulation of the railway traffic of his railhead, such as the arrival and departure of supply and ammunition trains; the entraining and detraining of troops, reinforcements and remounts; the evacuation of sick and wounded men and horses; and last, but surely not least, the issue of "movement orders" to officers and men travelling by train, including the "leave train," which, being apparently of little or no importance in the scheme of things, has to make way for all other