A well organized General Staff to put into effect the plans of the Commander in Chief is essential to a successful modern army. However capable divisions, battalions, and companies may be as units, success would be impossible unless they worked together. A well organized General Staff trained for war has not hitherto existed in our army. Under the Commander in Chief this staff must carry out the policy of the army as a whole and direct all the details of its preparation, support, and operation. As models to aid us, we had the veteran French General Staff and the experience of the British who had formed a staff to meet the demands of a great army. By selecting from each the features that best met our needs and helped by our own early experience in the war, our great General Staff system was completed.
The General Staff is divided into five groups, each with its chief. G. 1 is in charge of the organization and equipment of troops, replacements, overseas shipment, and welfare associations; G. 2 has censorship, gathering and disseminating information, particularly concerning the enemy, preparation of maps, and all similar subjects; G. 3 is charged with all strategic studies and plans and the supervision of the movement of troops and of fighting; G. 4 co-ordinates questions of army supply, necessary construction, transport for troops going into battle, of hospitals and the movement of the sick and wounded; G. 5 supervises the various schools and has general direction of education and training.
It was decided that our combat divisions should consist of four regiments of infantry of 3,000 men each with three battalions to a regiment, and four companies of 250 men each to a battalion, and of an artillery brigade of three regiments, a machine gun battalion, an engineer regiment, a trench-mortar battery; a signal battalion, wagon trains, and the headquarters staffs and military police. These with medical and other units, made a total of over 28,000 men, or about double the size of a French or German division. Each corps consisted of six divisions—four combat and one depot and one replacement division—and also two regiments of cavalry. Each army consisted of from three to five corps. With four divisions fully trained, a corps could take over an American sector with two divisions in line and two in reserve, with the depot and replacement divisions prepared to fill the gaps in the ranks.
Our purpose was to prepare an American force which should be able to take the offensive in every respect. Accordingly, the development of a self-reliant infantry by thorough drill in the use of the rifle and in the tactics of open warfare was always uppermost. The plan of training after arrival in France allowed a division one month for acclimatization and instruction in small units from battalions down, a second month in quiet trench sectors by battalion, and a third month after it came out of the trenches when it should be trained as a complete division in war of movement.
Very early a system of schools was outlined and started which should have the advantage of instruction by officers direct from the front. At the great school centre at Langres, one of the first to be organized, was the staff school, where the principles of general staff work, as laid down in our own organization, were taught to carefully selected officers. Men in the ranks who had shown qualities of leadership were sent to the school of candidates for commissions. A school of the line taught younger officers the principles of leadership, tactics, and the use of the different weapons. In the artillery school, at Saumur, young officers were taught the fundamental principles of modern artillery; while at Issoudun an immense plant was built for training cadets in aviation. These and other schools, with their well-considered curriculums for training in every branch of our organization, were co-ordinated in a manner best to develop an efficient army out of willing and industrious young men, many of whom had not before known even the rudiments of military technique. Both Marshal Haig and General Pétain placed officers and men at our disposal for instructional purposes, and we are deeply indebted for the opportunities given to profit by their veteran experience.
The place the American Army should take on the western front was to a large extent influenced by the vital questions of communication and supply. The northern ports of France were crowded by the British Armies' shipping and supplies while the southern ports, though otherwise at our service, had not adequate port facilities for our purposes, and these we should have to build. The already overtaxed railway system behind the active front in Northern France would not be available for us as lines of supply, and those leading from the southern ports of Northeastern France would be unequal to our needs without much new construction. Practically all warehouses, supply depots and regulating stations must be provided by fresh constructions. While France offered us such material as she had to spare after a drain of three years, enormous quantities of material had to be brought across the Atlantic.
With such a problem any hesitation or lack of definiteness in making plans might cause failure even with victory within our grasp. Moreover, plans as great as our national purpose and resources would bring conviction of our power to every soldier in the front line, to the nations associated with us in the war, and to the enemy. The tonnage for material for necessary construction for the supply of an army of three and perhaps four million men would require a mammoth program of shipbuilding at home, and miles of dock construction in France, with a corresponding large project for additional railways and for storage depots.
All these considerations led to the conclusion that if we were to handle and supply the great forces deemed essential to win the war we must utilize the southern ports of France—Bordeaux, La Pallice, St. Nazaire, and Brest—and the comparatively unused railway systems leading therefrom to the northeast. This would mean the use of our forces against the enemy somewhere in that direction, but the great depots of supply must be centrally located, preferably in the area included by Tours, Bourges, and Châteauroux, so that our armies could be supplied with equal facility wherever they might be serving on the western front.
To build up such a system there were talented men in the Regular Army, but more experts were necessary than the army could furnish. Thanks to the patriotic spirit of our people at home, there came from civil life men trained for every sort of work involved in building and managing the organization necessary to handle and transport such an army and keep it supplied. With such assistance the construction and general development of our plans have kept pace with the growth of the forces, and the Service of Supply is now able to discharge from ships and move 45,000 tons daily, besides transporting troops and material in the conduct of active operations.
As to organization, all the administrative and supply services, except the Adjutant General's, Inspector General's, and Judge Advocate General's Departments, which remain at general headquarters, have been transferred to the headquarters of the services of supplies at Tours under a commanding General responsible to the Commander-in-Chief for supply of the armies. The Chief Quartermaster, Chief Surgeon, Chief Signal Officer, Chief of Ordnance, Chief of Air Service, Chief of Chemical Warfare, the general purchasing agent in all that pertains to questions of procurement and supply, the Provost Marshal General in the maintenance of order in general, the Director General of Transportation in all that affects such matters, and the Chief Engineer in all matters of administration and supply, are subordinate to the Commanding General of the Service of Supply, who, assisted by a staff especially organized for the purpose, is charged with the administrative co-ordination of all these services.