Success in battle is the ultimate object of all military training; success may be looked for only when the training is intelligent and thorough. Commanding officers are accountable for the proper training of their respective organizations within the limits prescribed by regulations and orders. The excellence of an organization is judged by its field efficiency. The field efficiency of an organization depends primarily upon its effectiveness as a whole. Thoroughness and uniformity in the training of the units of an organization are indispensable to the efficiency of the whole; it is by such means alone that the requisite teamwork may be developed. The Drill Regulations are furnished as a guide. They provide the principles for training and for increasing the probability of success in battle. The principles of combat are considered in Part II of these regulations. They are treated in the various schools included in Part I only to the extent necessary to indicate the functions of the various commanders and the division of responsibility between them. The amplification necessary to a proper understanding of their application is to be sought in Part II. Drill, combat, marches and camps, ceremonies and inspections, as well as manuals are all addressed.

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