In the autumn of 1918 five hundred colleges and universities became a part of the great program of the War Department. Each of these institutions was transformed into a martial training school and nearly all the men students of the whole five hundred, about 170,000 in all, joined the Students’ Army Training Corps, thus becoming members of the United States Army. But while these youths spent much time on drill and training they also were expected to keep up their other studies. For this was a scientific war and demanded for its prosecution men skilled in many branches of learning. The young men were being trained to be not only soldiers but also engineers, chemists, physicians, geologists, physicists, and specialists in many other lines. From their ranks the most promising were selected and sent to military camps for six weeks of a course of rigid and intensive military training in some special line of military service. West Point graduates, army officers with experience on the other side, officers loaned by our Allies, had charge of the military supervision and work of this great body of students. And during the summer of 1918 7,000 members of university and college faculties attended special training camps to prepare themselves to assist in this work. The school year’s training was expected to yield, by the spring of 1919, from 60,000 to 70,000 officers. Thus, by training, selection, rigid test, more intensive training, the hardest of hard work, and still more training under men who had proved their worth in battle and had brought back dearly won knowledge of present day methods of warfare, the need for more, and more, and ever more officers for the rapidly expanding army was met. And in the camps and cantonments the daily drill, drill, drill, and again drill, drill, drill, of a million and a half of soldiers was constantly carried on. Early in the course of all these activities it was perceived that it would be advisable to reconstruct the entire plan of organization of the army in order to make the size and number of its fighting units correspond with those of the English and French armies and thus simplify the brigading of our troops with the others and the exchanging of units in the front lines. This reorganization was carried out, as was also the merging together into one body of the three organizations, Regular Army, National Guard and National Army, in the midst of all the high-speeded preparations for war.