"A close observation of the experience in foreign countries has shown us the vital necessity for a peace time prearrangement for conversion in all industries. Wars, as now waged, involve every human and material resource of a belligerent nation. Every factory and every man, woman, and child are affected. Every sinew of industry, of transportation, and of finance must be harnessed in the country's service. In England two years and a half ago there were three government arsenals. Today thousands of England's industrial plants are being operated as government factories for the production of war materials, and many other thousands of plants, still under private control, are centering their energies in this same direction. "We have here in the United States vast resources in manufacturing and producing equipment, but they are unorganized and uneducated for the national service. Our observations of the European War have taught us that it is upon organized industry that we must base every plan of military defense. In the event of trouble with any one of the several first-class powers, between 80 and 90 per cent. of our industrial activity would of necessity be centered upon the making of supplies for the government. We have learned also that from one to two years of time and of conscientious effort are needed to permit any large manufacturing establishment to change over from its usual peace-time commercial line to the quantity production of war materials for which it has had no previous training." In certain respects the position of the United States was unique, not only because of its resources but because it was to a certain extent self-dependent as a belligerent. England was able for some time to import large quantities of munitions and supplies from other countries. In the case of the United States when it entered the war, munition and food supplies had to come from its own resources. Practically all of the war materials had to be ultimately produced in the United States. Many observers were optimistic because they had a sanguine opinion of the efficiency presented by American industrial democracy. But efficiency alone could not win the war. There were certain limitations to the sphere of efficiency. This was pointed out by Mr. H. G. Moulton in an address on "Industrial Conscription," delivered before the Western Economic Society, at Chicago, in 1917: