The Influence of Sea Power upon History. Alfred Thayer Mahan
to the harbor. The allied fleet began to get under way at 7 A.m., and Nelson, even under the conditions of those days, knew it by 9.30. The English fleet at that distance was a very real danger to its enemy. It seems possible, in these days of submarine telegraphs, that the blockading forces in-shore and off-shore, and from one port to another, might be in telegraphic communication with one another along the whole coast of the United States, readily giving mutual support; and if, by some fortunate military combination, one detachment were attacked in force, it could warn the others and retreat upon them. Granting that such a blockade off one port were broken on one day, by fairly driving away the ships maintaining it, the notification of its being re-established could be cabled all over the world the next. To avoid such blockades there must be a military force afloat that will at all times so endanger a blockading fleet that it can by no means keep its place. Then neutral ships, except those laden with contraband of war, can come and go freely, and maintain the commercial relations of the country with the world outside.
It may be urged that, with the extensive sea-coast of the United States, a blockade of the whole line cannot be effectively kept up. No one will more readily concede this than officers who remember how the blockade of the Southern coast alone was maintained. But in the present condition of the navy, and, it may be added, with any additions not exceeding those so far proposed by the government,14 the attempt to blockade Boston, New York, the Delaware, the Chesapeake, and the Mississippi, in other words, the great centres of export and import, would not entail upon one of the large maritime nations efforts greater than have been made before. England has at the same the blockaded Brest, the Biscay coast, Toulon, and Cadiz, when there were powerful squadrons lying within the harbors. It is true that commerce in neutral ships can then enter other ports of the United States than those named; but what a dislocation of the carrying traffic of the country, what failure of supplies at times, what inadequate means of transport by rail or water, of dockage, of lighterage, of warehousing, will be involved in such an enforced change of the ports of entry! Will there be no money loss, no suffering, consequent upon this? And when with much pain and expense these evils have been partially remedied, the enemy may be led to stop the new inlets as he did the old. The people of the United States will certainly not starve, but they may suffer grievously. As for supplies which are contraband of war, is there not reason to fear that the United States is not now able to go alone if an emergency should arise?
The question is eminently one in which the influence of the government should make itself felt, to build up for the nation a navy which, if not capable of reaching distant countries, shall at least be able to keep clear the chief approaches to its own. The eyes of the country have for a quarter of a century been turned from the sea; the results of such a policy and of its opposite will be shown in the instance of France and of England. Without asserting a narrow parallelism between the case of the United States and either of these, it may safely be said that it is essential to the welfare of the whole country that the conditions of trade and commerce should remain, as far as possible, unaffected by an external war. In order to do this, the enemy must be kept not only out of our ports, but far away from our coasts.15 Can this navy be had without restoring the merchant shipping? It is doubtful. History has proved that such a purely military sea power can be built up by a despot, as was done by Louis XIV.; but though so fair seeming, experience showed that his navy was like a growth which having no root soon withers away. But in a representative government any military expenditure must have a strongly represented interest behind it, convinced of its necessity. Such an interest in sea power does not exist, cannot exist here without action by the government. How such a merchant shipping should be built up, whether by subsidies or by free trade, by constant administration of tonics or by free movement in the open air, is not a military but an economical question. Even had the United States a great national shipping, it may be doubted whether a sufficient navy would follow; the distance which separates her from other great powers, in one way a protection, is also a snare. The motive, if any there be, which will give the United States a navy, is probably now quickening in the Central American Isthmus. Let us hope it will not come to the birth too late.
Here concludes the general discussion of the principal elements which affect, favorably or unfavorably, the growth of sea power in nations. The aim has been, first to consider those elements in their natural tendency for or against, and then to illustrate by particular examples and by the experience of the past. Such discussions, while undoubtedly embracing a wider field, yet fall mainly within the province of strategy, as distinguished from tactics. The considerations and principles which enter into them belong to the unchangeable, or unchanging, order of things, remaining the same, in cause and effect, from age to age. They belong, as it were, to the Order of Nature, of whose stability so much is heard in our day; whereas tactics, using as its instruments the weapons made by man, shares in the change and progress of the race from generation to generation. From time to time the superstructure of tactics has to be altered or wholly torn down but the old foundations of strategy so far remain, as though laid upon a rock. There will next be examined the general history of Europe and America, with particular reference to the effect exercised upon that history, and upon the welfare of the people, by sea power in its broad sense. From time to time, as occasion offers, the aim will be to recall and reinforce the general teaching, already elicited, by particular illustrations. The general tenor of the study will therefore be strategical, in that broad definition of naval strategy which has been been quoted and accepted: "Naval strategy has for its end to found, support, and increase, as well in peace as in war, the sea power of a country." In the matter of particular battles, while freely admitting that the change of details has made obsolete much of their teaching, the attempt will be made to point out where the application or neglect of true general principles has produced decisive effects; and, other things being equal, those actions will be preferred which, from their association with the names of the most distinguished officers, may be presumed to show how far just tactical ideas obtained in a particular age or a particular service. It will also be desirable, where analogies between ancient and modern weapons appear on the surface, to derive such probable lessons as they offer, without laying undue stress upon the points of resemblance. Finally, it must be remembered that, among all changes, the nature of man remains much the same; the personal equation, though uncertain in quantity and quality in the particular instance, is sure always to be found.
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