During the actual battle, the intelligence was that of the officers and men in the respective fleets, in managing the two fleets, the ships themselves, and the guns, engines, and machines of all kinds that those ships contained. It is this factor—trained intelligence—that has decided most of the battles of history, and the course that nations thereafter followed. Battles have usually been fought between forces not very different in point of numbers and material, for the reason that a force which knew itself to be weaker than another would not fight unless compelled to fight; and in cases where two forces of widely differing strength have fought, the situation has usually been brought about directly by a superior intelligence. In fact, one of the most frequent and important endeavors of strategy and tactics—used triumphantly by Napoleon—has always been such a handling of one's forces as to be superior to the enemy at the point of contact—to "get the mostest men there the firstest," as General Forrest is said to have expressed it.

The effect of superior-trained intelligence is greatest "at the top," but it can accomplish little unless a fine intelligence permeates the whole. A fine intelligence at the top will so direct the men below, will so select men for the various posts, and will so co-ordinate their efforts, that the organization will resemble a veritable organism: all the various organs fulfilling separately yet accurately their allotted functions; all the fire-control parties, all the gun crews, all the torpedo crews, all the engineer forces properly organized and drilled; all the hulls of the vessels, all the guns, all the torpedoes, all the multifarious engines, machines, and instruments in good material condition and correctly adjusted for use.

But it is not only in the actual battle that fine intelligence is required; it is required long before the battle and far distant from the scene—in the "admiralty" at home. The Japanese fleet set out fully manned with a highly trained, enthusiastic, and confident personnel; the Russian fleet set out manned with a poorly trained and discouraged personnel, only too well aware of their defects. The issue at Tsushima was decided before the respective fleets left their respective homes—though that issue was not then known to mortals. The battle emphasized, but did not prove, what had been proved a hundred times before: the paramount importance of preparedness; that when two forces fight—the actual battle merely secures the decision as to the relative values of two completed machines, and their degrees of preparedness for use.

Preparedness of material is not, of course, so important as preparedness of personnel, because if the personnel is prepared, they will inevitably prepare the material. And the preparedness must pervade all grades: for while it is true that the preparedness of those in high command is more important than the preparedness of those in minor posts, yet there is no post so lowly that its good or its ill performance will not be a factor in the net result. An unskilful oiler may cause a hot bearing that will slow down a battleship, and put out of order the column of a squadron; a signalman's mistake may throw a fleet into confusion.

Perfect preparedness of personnel and material is essential because events follow each other so rapidly in war that no preparation can be made after it has begun. To fight is the most intense work a man can do; and a war is nothing but a fight. No matter how great or how small a war may be, no war can lose the essential qualities of a fight, or (save in the treatment of prisoners) be more brutal or less brutal when fought between two little savage tribes, than when fought between two colossal groups of Christian nations, civilized to the highest point. War is the acme of the endeavor of man. Each side determines that it will win at all costs and at all hazards; that nobody's comfort, happiness, or safety shall receive the slightest consideration; that everybody's strength and courage must be worked to the limit by night as well as by day, and that there must be no rest and no yielding to any softening influence whatever; that the whole strength and mind of the nation, and of every individual in it, must be devoted, and must be sacrificed, if need be, to the cause at stake.

In war, a navy's primary duty has usually been to protect the coast and trade routes of its country; and in order to do this, it has had to be able to oppose to an attacking fleet a defending fleet more militarily effective. If it were less effective, even if no invasion were attempted, the attacking fleet could cripple or destroy the defending fleet and then institute a blockade. In modern times an effective blockade, or at least a hostile patrol of trade routes, could be held hundreds of miles from the coast, where the menace of submarines would be negligible; and this blockade would stop practically all import and export trade. This would compel the country to live exclusively on its own resources, and renounce intercourse with the outside world. Some countries could exist a long time under these conditions. But they would exist merely, and the condition of mere existence would never end until they sued for peace; because, even if new warships were constructed with which to beat off the enemy, each new and untrained ship would be sunk or captured shortly after putting out to sea as, on June 1, 1813, in Massachusetts Bay, the American frigate Chesapeake was captured and nearly half her crew were killed and wounded in fifteen minutes by a ship almost identical in the material qualities of size and armament—the better-trained British frigate Shannon.

For these reasons, every nation that has acquired and has long retained prosperity, has realized that every country liable to be attacked by any navy must either be defended by some powerful country, or else must keep a navy ready to repel the attack successfully. To do this, the defending navy must be ready when the attack comes; because if not ready then, it will never have time to get ready. In regard to our own country, much stress is laid by some intelligent people—who forget the Chesapeake and Shannon—on the 3,000 miles of water stretching between the United States and Europe. This 3,000 miles is, of course, a factor of importance, but it is not a prohibition, because it can be traversed with great surety and quickness—with much greater surety and quickness, for instance, than the 12,000 miles traversed by the Russian fleet, in 1904, in steaming from Russia to Japan.

The 3,000 miles that separate the United States from Europe can be traversed by a fleet more powerful than ours in from two to three weeks; and the fleet would probably arrive on our shores in good condition, and manned by full crews of well-trained officers and men, habituated to their duties by recent practice and thoroughly ready to fight, as the Shannon was. We could not meet this fleet successfully unless we met it with a fleet more militarily effective; and we could not do this unless we had in the regular service and the reserve a personnel of officers and men sufficiently numerous to man immediately all the vessels that would be needed, and to man in addition all the shore stations, which would have to be expanded to a war basis. The officers and enlisted men, of course, would have to be at least as well trained as the corresponding personnel in the attacking fleet, and have as recent and thorough practice in their respective duties; for otherwise, no matter how brave and devoted they might be, the fate of the American fleet would be the fate of the Chesapeake.

In order to be ready when war breaks, the first essential is a plan for preparation. Preparation is divided naturally into two parts: first, preparation of sufficient material and personnel; second, preparation of plans for the conduct of the war after it has begun. These two parts are both considered in what are technically called "War Plans."

Preparation for war has always been known to be essential. Lack of preparation has never been due to lack of knowledge, but always to neglect. The difference between the wise and the foolish virgins was not a difference in knowledge but a difference in character. The difference between Alexander's little army and the tremendous army of Darius was not so much in numbers as in preparedness. Trained under Philip of Macedon for many years, organized for conquest and aggression, prepared to meet any situation that might arise, Philip's army carried Philip's son from victory to victory, and made him the master of the world. Cæsar was great in peace as well as war, but it was by Cæsar's army that Cæsar's greatness was established; and it was a thoroughness of preparation unknown before that made Cæsar's army great. Napoleon's successes were built on the splendid preparation of a mind transcendently fitted to grasp both principles and details, and on the comparatively unprepared state of his opponents.