While the military have enjoyed certain advantages in the development of their training programs they have also operated under certain limitations caused by the necessity of building one of the largest military establishments in the world within 4 years. The Services have been faced with the need of adjusting their training programs to constantly changing conditions of warfare and the rapidly developing techniques of war making. What has been the fundamental planning approach which the Services have adopted in order to take advantage of the favorable conditions under which they have operated to offset in so far as possible the limiting conditions? The training programs of the Services have been based upon three points of approach: (1) The utilization of the most modern scientific testing and classification procedures whereby the skills and aptitudes of each serviceman are determined and used as a basis for this assignment to duty and to training; (2) The utilization of scientific job and operations analyses as the bases for curriculum building; and (3) The utilization of the tools and procedures of experiential learning to the utmost degree, as especially exemplified in the widespread use of training aids including audio-visual aids. The integration and correlation of these three basic procedures are in many ways the most interesting and thought-provoking aspect of military training. This review of the bases for the training programs of the Services is not to be construed as implying that the Army and Navy have neglected general training for those personal qualities which go to make a good soldier or sailor, or for leadership for those in responsible positions. The Committee has been interested for the most part, however, in those programs of "job training" in which training aids and devices have been principally used. A bibliography is included. Individual sections contain footnotes. [Best copy available has been provided.].