The civil functions of the State—legislative, administrative, and judicial—have no very essential connection with the military functions, and there is no reason why both kinds of functions should normally be exercised by the same State. There is, in fact, every reason why the civil State and the military State should be different. The greater modern States are already too large for most civil purposes, but for military purposes they are not large enough, since they are not world-wide. This difference as to the desirable area for the two kinds of State introduces a certain perplexity and hesitation, when it is not realized that the two functions have little necessary connection: one set of considerations points towards small States, the other towards continually larger States. Of course, if there were an international Army and Navy, there would have to be some international authority to set them in motion. But this authority need never concern itself with any of the internal affairs of national States: it need only declare the rules which should regulate their relations, and pronounce judicially when those rules have been so infringed as to call for the intervention of the international force. How easily the limit of the authority could be fixed may be seen by many actual examples. The civil and military State are often different in practice, for many purposes. The South American Republics are sovereign for all purposes except their relations with Europe, in regard to which they are subject to the United States: in dealings with Europe, the Army and Navy of the United States are their Army and Navy. Our self-governing Dominions depend for their defense, not upon their own forces but upon our Navy. Most Governments, nowadays, do not aim at formal annexation of a country which they wish to incorporate, but only at a protectorate—that is, civil autonomy subject to military control. Such autonomy is, of course, in practice incomplete, because it does not enable the “protected” country to adopt measures which are vetoed by the Power in military control. But it may be very nearly complete, as in the case of our self-governing Dominions. At the other extreme, it may become a mere farce, as in Egypt. In the case of an alliance, there is complete autonomy of the separate allied countries, together with what is practically a combination of their military forces into one single force.