Sea-Power and Other Studies

by Sir Cyprian Bridge

The strategic command of the sea in a particular war or campaign has equal concern for all maritime belligerents. Before seeing what it is, it will be well to learn on high authority what it is not. Mahan says that command, or, to use his own term, 'control of the sea, however real, does not imply that an enemy's single ships or small squadrons cannot steal out of port, cannot cross more or less frequented tracts of ocean, make harassing descents upon unprotected points of a long coast-line, enter blockaded harbours. On the contrary, history has shown that such evasions are always possible, to some extent, to the weaker party, however great the inequality of naval strength.'[55] The Anglo-French command of the sea in 1854-56, complete as it was, did not enable the allies to intercept the Russian ships in the North-Western Pacific, nor did that held by the Federals in the American civil war put an early stop to the cruises of the Confederate vessels. What the term really does imply is the power possessed from the first, or gained during hostilities, by one belligerent of carrying out considerable over-sea expeditions at will. In the Russian war just mentioned the allies had such overwhelmingly superior sea-power that the Russians abandoned to them without a struggle the command of the sea; and the more recent landing in South Africa, more than six thousand miles away, of a large British army without even a threat of interruption on the voyage is another instance of unchallenged command. In wars between great powers and also between secondary powers, if nearly equally matched, this absence of challenge is rare. The rule is that the command of the sea has to be won after hostilities begin. To win it the enemy's naval force must be neutralised. It must be driven into his ports and there blockaded or 'masked,' and thus rendered virtually innocuous; or it must be defeated and destroyed. The latter is the preferable, because the more effective, plan. As was perceptible in the Spanish-American war of 1898, as long as one belligerent's fleet is intact or at large, the other is reluctant to carry out any considerable expedition over-sea. In fact, the command of the sea has not been secured whilst the enemy continues to have a 'fleet in being.'[56]

[Footnote 55: _Influence_of_Sea-power_on_History_, 1890, p. 4.]

[Footnote 56: See ante, Sea-Power, p. 50.]

In 1782 a greatly superior Franco-Spanish fleet was covering the siege of Gibraltar. Had this fleet succeeded in preventing the revictualling of the fortress the garrison would have been starved into surrender. A British fleet under Lord Howe, though much weaker in numbers, had not been defeated and was still at large. Howe, in spite of the odds against him, managed to get his supply-ships in to the anchorage and to fight a partial action, in which he did the allies as much damage as he received. There has never been a display of higher tactical skill than this operation of Howe's, though, it may be said, he owes his fame much more to his less meritorious performance on the first of June. The revictualling of Gibraltar surpassed even Suffren's feat of the capture of Trincomalee in the same year. In 1798 the French, assuming that a temporary superiority in the Mediterranean had given them a free hand on the water, sent a great expedition to Egypt. Though the army which was carried succeeded in landing there, the covering fleet was destroyed by Nelson at the Nile, and the army itself was eventually forced to surrender. The French had not perceived that, except for a short time and for minor operations, you cannot separate the command of the Mediterranean or of any particular area of water from that of the sea in general. Local command of the sea may enable a belligerent to make a hasty raid, seize a relatively insignificant port, or cut out a vessel; but it will not ensure his being able to effect anything requiring considerable time for its execution, or, in other words, anything likely to have an important influence on the course of the war. If Great Britain has not naval force enough to retain command of the Mediterranean, she will certainly not have force enough to retain command of the English Channel. It can be easily shown why it should be so. In war danger comes less from conditions of locality than from the enemy's power to hurt. Taking up a weak position when confronting an enemy may help him in the exercise of his power, but it does not constitute it.[57] A maritime enemy's power to hurt resides in his fleet. If that can be neutralised his power disappears. It is in the highest degree improbable that this end can be attained by splitting up our own fleet into fragments so as to have a part of it in nearly every quarter in which the enemy may try to do us mischief. The most promising plan—as experience has often proved—is to meet the enemy, when he shows himself, with a force sufficiently strong to defeat him. The proper station of the British fleet in war should, accordingly, be the nearest possible point to the enemy's force. This was the fundamental principle of Nelson's strategy, and it is as valid now as ever it was. If we succeed in getting into close proximity to the hostile fleet with an adequate force of our own, our foe cannot obtain command of the sea, or of any part of it, whether that part be the Mediterranean or the English Channel, at any rate until he has defeated us. If he is strong enough to defeat our fleet he obtains the command of the sea in general; and it is for him to decide whether he shall show the effectiveness of that command in the Mediterranean or in the Channel.

[Footnote 57: In his _History_of_Scotland_ (1873). J. H. M. Burton, speaking of the Orkney and Shetland isles in the Viking times, says (vol. i. p. 320): 'Those who occupied them were protected, not so much by their own strength of position, as by the complete command over the North Sea held by the fleets that found shelter in the fiords and firths.']

In the smaller operations of war temporary command of a particular area of water may suffice for the success of an expedition, or at least will permit the execution of the preliminary movements. When the main fleet of a country is at a distance—which it ought not to be except with the object of nearing the opposing fleet—a small hostile expedition may slip across, say the Channel, throw shells into a coast town or burn a fishing village, and get home again unmolested. Its action would have no sort of influence on the course of the campaign, and would, therefore, be useless. It would also most likely lead to reprisals; and, if this process were repeated, the war would probably degenerate into the antiquated system of 'cross-raiding,' discarded centuries ago, not at all for reasons of humanity, but because it became certain that war could be more effectually waged in other ways. The nation in command of the sea may resort to raiding to expedite the formal submission of an already defeated enemy, as Russia did when at war with Sweden in 1719; but in such a case the other side cannot retaliate. Temporary command of local waters will also permit of operations rather more considerable than mere raiding attacks; but the duration of these operations must be adjusted to the time available. If the duration of the temporary command is insufficient the operation must fail. It must fail even if the earlier steps have been taken successfully. Temporary command of the Baltic in war might enable a German force to occupy an Aland isle; but unless the temporary could be converted into permanent command, Germany could make no use of the acquisition, which in the end would revert as a matter of course to its former possessors. The command of the English Channel, which Napoleon wished to obtain when maturing his invasion project, was only temporary. It is possible that a reminiscence of what had happened in Egypt caused him to falter at the last; and that, quite independently of the proceedings of Villeneuve, he hesitated to risk a second battle of the Nile and the loss of a second army. It may have been this which justified his later statement that he did not really mean to invade England. In any case, the English practice of fixing the station of their fleet wherever that of the enemy's was, would have seriously shortened the duration of his command of the Channel, even if it had allowed it to be won at all. Moreover, attempts to carry out a great operation of war against time as well as against the efforts of the enemy to prevent it are in the highest degree perilous.

In war the British Navy has three prominent duties to discharge. It has to protect our maritime trade, to keep open the communications between the different parts of the empire, and to prevent invasion. If we command the sea these duties will be discharged effectually. As long as we command the sea the career of hostile cruisers sent to prey on our commerce will be precarious, because command of the sea carries with it the necessity of possessing an ample cruiser force. As long as the condition mentioned is satisfied our ocean communications will be kept open, because an inferior enemy, who cannot obtain the command required, will be too much occupied in seeing to his own safety to be able to interfere seriously with that of any part of our empire. This being so, it is evident that the greater operation of invasion cannot be attempted, much less carried to a successful termination, by the side which cannot make head against the opposing fleet. Command of the sea is the indispensable preliminary condition of a successful military expedition sent across the water. It enables the nation which possesses it to attack its foes where it pleases and where they seem to be most vulnerable. At the same time it gives to its possessor security against serious counter-attacks, and affords to his maritime commerce the most efficient protection that can be devised. It is, in fact, the main object of naval warfare.

III

WAR AND ITS CHIEF LESSONS[58]

[Footnote 58: Written in 1900. (_Naval_Annual_, 1901.)]