If there is any one thing needed in the training of U. S. Army leaders of today and for the future, it is vision—vision that can foresee the size of a conflict and make preparations accordingly. We do not mean vision that will order, as happened in some cases, ten times as much material as could possibly be used by even 5,000,000 troops, but the sort of vision that could foresee in the fall of 1917 that 2,000,000 men might be needed in France and then make preparations to get materials there for those troops by the time they arrived. In order to cover the early formative period of the C. W. S. in France and to show some of the difficulties encountered, the following running account is given of some of the early happenings without regard to the subdivisions under which they might properly be considered. =Assignment of Chief of the Gas Service.= Sailing from the United States on the 23d of July, 1917, Fries arrived in Paris on the morning of August 14, 1917, and was immediately assigned the task of organizing a highway service for the American Expeditionary Forces. Five days later and before the highway order was issued, he was asked what he would think if his orders were changed so as to make him Chief of the newly proposed Gas Service. Being given one night to think it over he told the General Staff he would undertake the work. The road work was immediately closed up and on the 22d of August the organization of a Gas Service was actively started. At that time some information concerning gases and gas troops had been gathered by Colonel Barber of the General Staff. Likewise, Colonel (later Brigadier General) Hugh A. Drum had made a rough draft of an order accompanied by a diagram for the establishment of the Gas Service. This information was turned over to Fries who was told to complete the draft of the order, together with an organization chart, for the action of the Commander-in-Chief. After one and a half days had been put on this work the draft and chart were considered in good enough shape to submit to General Pershing, Commander-in-Chief. =First Trip to British Gas Headquarters.= Noting that the proposed organization provided for the handling of 4-inch Stokes’ mortars by gas troops, General Pershing asked why this work could not be done by regular trench mortar companies. He was told that gas operations were too technical and dangerous to be intrusted to any but especially trained troops, and that, furthermore, it was understood that 4-inch Stokes’ mortars were used only by the British troops. General Pershing said, “You had better beat it to the British Gas Headquarters in the field and settle definitely that and certain other minor points.” Fries told him he was only too glad to do this, and, having completed preparations, left on the morning of August 25th with Colonel Church and Captain Boothby, both of the Medical Department, for St. Omer, Headquarters of the British Gas Service in the Field.