Clearly, the forming of a correct conception should not be expected of men not trained to form it; clearly, for instance, mere knowledge of electricity and mere skill in using electrical instruments cannot enable a man to devise radio apparatus for naval use; a certain amount of knowledge of purely naval and nautical matters is needed in addition. Clearly, the concept as to the kind of performance to be required of radio apparatus is not to be expected of a mere technician, but is to be expected of a strategist--and equally the ability to design, construct, and supply the apparatus is not to be expected of a strategist, but it is to be expected of a technician. A like remark may be made concerning any mechanism--say a gun, a torpedo, or an instrument, or a vessel of any kind. The strategist, by studying the requirements of probable war, concludes that a certain kind of thing is needed; and the technician supplies it, or does so to the best of his ability. The statement thus far made indicates a division of work into two sharply defined departments; and, theoretically, such a division does exist. This does not mean, however, that the strategist and the technician should work independently of each other. Such a procedure would result in the strategist demanding things the technician could not supply, and in the technician supplying things the strategist did not want, under a mistaken impression as to what the strategist wanted. The fullest and most intimate understanding and co-operation must exist between the strategist and the technician, as it must equally between the architect and the builder of a house. From an appreciation of such facts as these, every great Navy Department, except that of the United States, has developed a General Staff, which studies what should be done to prepare for passing from a state of peace to a state of war; which informs the minister at the head of the department what things should be done, and is given power to provide that the various bureaus and offices shall be able to do them when war breaks. This is the scheme which all the navy departments, except the American, have devised, to meet the sudden and violent shock of the outbreak of a modern war. _No other means has yet been devised_, and no other means is even forecasted. The means is extremely simple in principle, but complex beyond the reach of an ordinary imagination in detail. It consists simply in writing down a digest of all the various things that are to be done, dividing the task of doing them among the various bureaus and offices that are authorized by law to do them, and then seeing that the bureaus shall be able to do them in the time allowed.