It will be seen, therefore, that the blockading of the principal ports of any purely commercial country would be a disaster so great that there could not be a greater one except actual invasion. Another disaster might be the total destruction of its fleet by the enemy's fleet; but the only direct result of this would be that the people of the country would have fewer ships to support and fewer men to pay. The loss of the fleet and the men would not per se be any loss whatever to the country, but rather a gain. The loss of the fleet, however, would make it possible for the enemy's fleet to blockade our ports later, and thus bring about the horrors of which we have spoken.
While it is true that an absolute blockade of any port might be practically impossible at the present day, while it is true that submarines and torpedo-boats might compel blockading ships to keep at such distance from ports that many loopholes of escape would be open to blockade runners, yet it may be pointed out that even a partial blockade, even a blockade that made it risky for vessels to try to break it, would have a very deleterious effect upon the prosperity of the country and of every man, woman, and child within it. A blockade like this was that maintained during the greater part of the Civil War by the Northern States against the Southern States. This blockade, while not perfect, while it was such as to permit many vessels to pass both ways, was nevertheless so effective that it made it impossible for the Southern States to be prosperous, or to have any reasonable hope of ever being prosperous. And while it would be an exaggeration to state that the navy itself, unaided by the army, could have brought the South to terms; while it would be an exaggeration to state that all the land battles fought in the Civil War were unnecessary, that all the bloodshed and all the ruin of harvests and of homesteads were unnecessary, nevertheless it does seem that so long as the navy maintained the blockade which it did maintain, the people of the South would have been prevented from achieving enough prosperity to carry on an independent government; so that their revolt would have failed. The South, not being able to raise the blockade by means of their navy, might have tried to do so by sending an army into the Northern States, to whip the Northerners on their own ground; but this would clearly have been impossible.
The sentences above are not written with the intention of minimizing the services rendered by the army in the Civil War, or of detracting from the glory of the gallant officers and men who composed it, or of subtracting one jot or tittle from a grateful appreciation of their hardships and bloodshed; neither do they dare to question the wisdom of the statesmen who directed that the war should be fought mainly by the army. Their sole intention is to point out that, if a meagre naval force could produce so great an effect against a country mainly agricultural, a very powerful naval force, blockading effectively the principal ports of a manufacturing country, would have an effect so great that it can hardly be estimated.
It is plainly to be seen that the effect of a blockade against a purely commercial country by a modern navy would be incomparably greater now than it was fifty years ago, for two very important reasons. One reason is that the progress of modern engineering has made navies very much more powerful than they were fifty years ago; and the other reason is that the same cause has made countries very much more vulnerable to blockade, because it has made so many millions of people dependent upon manufacturing industries and the export of manufactured things, and forced them to live an artificial life. While the United States, for instance, does not depend for its daily bread on the regular coming of wheat from over the sea, yet millions of its people do depend, though indirectly, upon the money from the export of manufactured things; for with countries, as with people, habits are formed both of system and of mode of life, which it is dangerous suddenly to break; so that a country soon becomes as dependent upon outside commerce as a man does upon outside air, and a people suddenly deprived of a vigorous outside commerce would seem to be smothered almost like a man deprived of outside air.
A rough idea of the possible effect of a blockade of our coast may be gathered from the fact that our exports last year were valued at more than $2,000,000,000; which means that goods to this amount were sold, for which a return was received, either in money or its equivalent, most of it, ultimately, as wages for labor. Of course no blockade could stop all of this; but it does not seem impossible that it could stop half of it, if our fleet were destroyed by the enemy. Supposing that this half were divided equally among all the people in the United States, it would mean that each man, woman, and child would lose about $10 in one year. If the loss could be so divided up, perhaps no very great calamity would ensue. But, of course, no such division could be made, with the result that a great many people, especially poor people, earning wages by the day, would lose more than they could stand. Suppose, for instance, that a number of people earning about $900 a year, by employment in export enterprises, were the people upon whom the actual loss eventually fell by their being thrown out of employment. This would mean that more than a million people—men, women, and children—would be actually deprived of the means of living. It seems clear that such a thing would be a national disaster, for any loss of money to one man always means a loss of money or its equivalent to other men besides. For instance: suppose A owes $20 to B, B owes $20 to C, C owes $20 to D, D owes $20 to E, E owes $20 to F, F owes $20 to G, G owes $20 to H, H owes $20 to I, and I to J. If A is able to pay B, and does so, then B pays C, and so on, and everybody is happy. But suppose that A for some reason, say a blockade, fails to receive some money that he expected; then A cannot pay B, B cannot pay C, and so on; with the result, that not only does J lose his $20, but nine men are put in debt $20 which they cannot pay; with the further result that A is dunned by H, B is dunned by C, and so on, producing a condition of distress which would seem to be out of all proportion to a mere lack of $20, but which would, nevertheless, be the actual result. So in this country of 100,000,000 people, the sudden loss of $1,000,000,000 a year would produce a distress seemingly out of all proportion to that sum of money, because the individual loss of every loser would be felt by everybody else.
Since to a great manufacturing nation, like ours, the greatest danger from outside (except actual invasion) would seem to be the sudden stoppage of her oversea trade by blockade, we seem warranted in concluding that, since the only possible means of preventing a blockade is a navy, the primary use for our navy is to prevent blockade.
This does not mean that a fleet's place is on its own coast, because a blockade might be better prevented by having the fleet elsewhere; in fact it is quite certain that its place is not on the coast as a rule, but at whatever point is the best with relation to the enemy's fleet, until the enemy's fleet is destroyed. In fact, since the defensive and the offensive are so inseparably connected that it is hard sometimes to tell where one begins and the other ends, the best position for our fleet might be on the enemy's coast. It may be objected that the coast of the United States is so long that it would be impossible to blockade it. Perhaps, but that is not necessary: it would suffice to blockade Boston, Newport, New York, the Delaware, the Chesapeake, and the Gulf, say with forty ships. And we must remember that blockade running would be much more difficult now than in the Civil War, because of the increased power and accuracy of modern gunnery and the advent of the search-light, wireless telegraph, and aeroplane.
It may also be objected that the blockading of even a defenseless coast would cost the blockading country a good deal of money, by reason of the loss of trade with that country. True; but war is always expensive, and the blockade would be very much more expensive to the blockaded country; and though it might hold out a long while, it would be compelled to yield in the end, not only because of the blockade itself but because of the pressure of neutral countries; and the longer it held out, the greater the indemnity it would have to pay. The expense of blockading would therefore be merely a profitable investment.
The author is aware that actual invasion of a country from the sea would be a greater disaster than blockade, and that defense against invasion has often been urged in Great Britain as a reason for a great navy; so that the primary reason for a navy might be said to be defense against invasion. But why should an enemy take the trouble to invade us? Blockade is easier and cheaper, and can accomplish almost everything that an enemy desires, especially if it be enlivened by the occasional dropping of thousand-pound shells into Wall Street and the navy-yard.
While, however, the primary use of naval power seems to be to prevent blockade, a navy, like any other weapon, may be put to any other uses which circumstances indicate. For instance, the Northerners in the Civil War used the navy not to prevent blockade, but to make blockade; the Japanese used the navy to cover the transportation of their armies to Manchuria and Corea; and Great Britain has always used her navy to protect her trade routes.