The Influence of Sea Power Upon History, 1660-1783 · Alfred Thayer Mahan
The war of 1778, between Great Britain and the House of Bourbon, which is so inextricably associated with the American Revolution, stands by itself in one respect. It was purely a maritime war. Not only did the allied kingdoms carefully refrain from continental entanglements, which England in accordance with her former policy strove to excite, but there was between the two contestants an approach to equality on the sea which had not been realized since the days of Tourville. The points in dispute, the objects for which the war was undertaken or at which it aimed, were for the most part remote from Europe; and none of them was on the continent with the single exception of Gibraltar, the strife over which, being at the extreme point of a rugged and difficult salient, and separated from neutral nations by the whole of France and Spain, never threatened to drag in other parties than those immediately interested.
No such conditions existed in any war between the accession of Louis XIV. and the downfall of Napoleon. There was a period during the reign of the former in which the French navy was superior in number and equipment to the English and Dutch; but the policy and ambition of the sovereign was always directed to continental extension, and his naval power, resting on inadequate foundations, was ephemeral. During the first three-quarters of the eighteenth century there was practically no check to the sea power of England; great as were its effects upon the issues of the day, the absence of a capable rival made its operations barren of military lessons. In the later wars of the French Republic and Empire, the apparent equality in numbers of ships and weight of batteries was illusive, owing to the demoralization of the French officers and seamen by causes upon which it is not necessary here to enlarge. After some years of courageous but impotent effort, the tremendous disaster of Trafalgar proclaimed to the world the professional inefficiency of the French and Spanish navies, already detected by the keen eyes of Nelson and his brother officers, and upon which rested the contemptuous confidence that characterized his attitude, and to some extent his tactics, toward them. Thenceforward the emperor "turned his eyes from the only field of battle where fortune had been unfaithful to him, and deciding to pursue England elsewhere than upon the seas, undertook to restore his navy, but without reserving to it any share in a strife become more than ever furious.... Up to the last day of the Empire he refused to offer to this restored navy, full of ardor and confidence, the opportunity to measure itself with the enemy." Great Britain resumed her old position as unquestioned mistress of the seas.
The student of naval war will therefore expect to find a particular interest in the plans and methods of the parties to this great contest, and especially where they concern the general conduct of the whole war, or of certain large and clearly defined portions of it; in the strategic purpose which gave, or should have given, continuity to their actions from first to last, and in the strategic movements which affected for good or ill the fortunes of the more limited periods, which may be called naval campaigns. For while it cannot be conceded that the particular battles are, even at this day, wholly devoid of tactical instruction, which it has been one of the aims of the preceding pages to elicit, it is undoubtedly true that, like all the tactical systems of history, they have had their day, and their present usefulness to the student is rather in the mental training, in the forming of correct tactical habits of thought, than in supplying models for close imitation. On the other hand, the movements which precede and prepare for great battles, or which, by their skilful and energetic combinations, attain great ends without the actual contact of arms, depend upon factors more permanent than the weapons of the age, and therefore furnish principles of more enduring value.
In a war undertaken for any object, even if that object be the possession of a particular territory or position, an attack directly upon the place coveted may not be, from the military point of view, the best means of obtaining it. The end upon which the military operations are directed may therefore be other than the object which the belligerent government wishes to obtain, and it has received a name of its own,--the objective. In the critical consideration of any war it is necessary, first, to put clearly before the student's eye the objects desired by each belligerent; then, to consider whether the objective chosen is the most likely, in case of success, to compass those objects; and finally, to study the merits or faults of the various movements by which the objective is approached. The minuteness with which such an examination is conducted will depend upon the extent of the work which the inquirer proposes to himself; but it will generally conduce to clearness if an outline, giving only the main features unencumbered by detail, should precede a more exhaustive discussion. When such principal lines are thoroughly grasped, details are easily referred to them, and fall into place. The effort here will be confined to presenting such an outline, as being alone fitted to the scope of this work.
The principal parties to the War of 1778 were, on the one hand, Great Britain; on the other, the House of Bourbon, controlling the two great kingdoms of France and Spain. The American colonies, being already engaged in an unequal struggle with the mother-country, gladly welcomed an event so important to them; while in 1780 Holland was deliberately forced by England into a war from which she had nothing to gain and all to lose. The object of the Americans was perfectly simple,--to rid their country out of the hands of the English. Their poverty and their lack of military sea power, with the exception of a few cruisers that preyed upon the enemy's commerce, necessarily confined their efforts to land warfare, which constituted indeed a powerful diversion in favor of the allies and an exhausting drain upon the resources of Great Britain, but which it was in the power of the latter to stop at once by abandoning the contest. Holland, on the other hand, being safe from invasion by land, showed little desire for anything more than to escape with as little external loss as possible, through the assistance of the allied navies. The object of these two minor parties may therefore be said to have been the cessation of the war; whereas the principals hoped from its continuance certain changed conditions, which constituted their objects.
With Great Britain also the object of the war was very simple. Having been led into a lamentable altercation with her most promising colonies, the quarrel had gone on step by step till she was threatened with their loss. To maintain forcible control when willing adhesion had departed, she had taken up arms against them, and her object in so doing was to prevent a break in those foreign possessions with which, in the eyes of that generation, her greatness was indissolubly connected. The appearance of France and Spain as active supporters of the colonists' cause made no change in England's objects, whatever change of objective her military plans may, or should, have undergone. The danger of losing the continental colonies was vastly increased by these accessions to the ranks of her enemies, which brought with them also a threat of loss, soon to be realized in part, of other valuable foreign possessions. England, in short, as regards the objects of the war, was strictly on the defensive; she feared losing much, and at best only hoped to keep what she had. By forcing Holland into war, however, she obtained a military advantage; for, without increasing the strength of her opponents, several important but ill-defended military and commercial positions were thereby laid open to her arms.
The views and objects of France and Spain were more complex. The moral incentives of hereditary enmity and desire of revenge for the recent past doubtless weighed strongly, as in France did also the sympathy of the salons and philosophers with the colonists' struggle for freedom; but powerfully as sentimental considerations affect the action of nations, only the tangible means by which it is expected to gratify them admit of statement and measurement. France might wish to regain her North American possessions; but the then living generation of colonists had too keen personal recollection of the old contests to acquiesce in any such wishes as to Canada. The strong inherited distrust of the French, which characterized the Americans of the revolutionary era, has been too much overlooked in the glow of gratitude which followed the effectual sympathy and assistance then given; but it was understood at the time, and France felt, that to renew those pretensions might promote, between people of the same race only recently alienated, a reconciliation by just concessions, which a strong and high-minded party of Englishmen had never ceased to advocate. She therefore did not avow, perhaps did not entertain, this object. On the contrary, she formally renounced all claim to any part of the continent which was then, or had recently been, under the power of the British crown, but stipulated for freedom of action in conquering and retaining any of the West India Islands, while all the other colonies of Great Britain were, of course, open to her attack. The principal objects at which France aimed were therefore the English West Indies and that control of India which had passed into English hands, and also to secure in due time the independence of the United States, after they had wrought a sufficient diversion in her favor. With the policy of exclusive trade which characterized that generation, the loss of these important possessions was expected to lessen that commercial greatness upon which the prosperity of England depended,--to weaken her and to strengthen France. In fact, the strife which should be greater may be said to have been the animating motive of France; all objects were summed up in the one supreme end to which they contributed,--maritime and political superiority over England.
Preponderance over England, in combination with France, was also the aim of the equally humbled but less vigorous kingdom of Spain; but there was a definiteness in the injuries suffered and the objects specially sought by her which is less easily found in the broader views of her ally. Although no Spaniard then living could remember the Spanish flag flying over Minorca, Gibraltar, or Jamaica, the lapse of time had not reconciled the proud and tenacious nation to their loss; nor was there on the part of the Americans the same traditional objection to the renewal of Spanish sovereignty over the two Floridas that was felt with reference to Canada.
Such, then, were the objects sought by the two nations, whose interposition changed the whole character of the American Revolutionary War. It is needless to say that they did not all appear among the causes, or pretexts, avowed for engaging in hostility; but sagacious English opinion of the day rightly noted, as embodying in a few words the real ground of action of the united Bourbon Courts, the following phrase in the French manifesto: "To avenge their respective injuries, and to put an end to that tyrannical empire which England has usurped, and claims to maintain upon the ocean." In short, as regards the objects of the war the allies were on the offensive, as England was thrown upon the defensive.
The tyrannical empire which England was thus accused, and not unjustly, of exercising over the seas, rested upon her great sea power, actual or latent; upon her commerce and armed shipping, her commercial establishments, colonies, and naval stations in all parts of the world. Up to this time her scattered colonies had been bound to her by ties of affectionate sentiment, and by the still stronger motive of self-interest through the close commercial connection with the mother-country and the protection afforded by the constant presence of her superior navy. Now a break was made in the girdle of strong ports upon which her naval power was based, by the revolt of the continental colonies; while the numerous trade interests between them and the West Indies, which were injured by the consequent hostilities, tended to divide the sympathies of the islands also. The struggle was not only for political possession and commercial use. It involved a military question of the first importance,--whether a chain of naval stations covering one of the shores of the Atlantic, linking Canada and Halifax with the West Indies, and backed by a thriving seafaring population, should remain in the hands of a nation which had so far used its unprecedented sea power with consistent, resolute aggressiveness, and with almost unbroken success.
While Great Britain was thus embarrassed by the difficulty of maintaining her hold upon her naval bases, which were the defensive element of her naval strength, her offensive naval power, her fleet, was threatened by the growth of the armed shipping of France and Spain, which now confronted her upon the field which she had claimed as her own, with an organized military force of equal or superior material strength. The moment was therefore favorable for attacking the great Power whose wealth, reaped from the sea, had been a decisive factor in the European wars of the past century. The next question was the selection of the points of attack--of the principal objectives upon which the main effort of the assailants should be steadily directed, and of the secondary objectives by which the defence should be distracted and its strength dissipated.
One of the wisest French statesmen of that day, Turgot, held that it was to the interest of France that the colonies should not achieve their independence. If subdued by exhaustion, their strength was lost to England; if reduced by a military tenure of controlling points, but not exhausted, the necessity of constant repression would be a continual weakness to the mother-country. Though this opinion did not prevail in the councils of the French government, which wished the ultimate independence of America, it contained elements of truth which effectually moulded the policy of the war. If benefit to the United States, by effecting their deliverance, were the principal object, the continent became the natural scene, and its decisive military points the chief objectives, of operations; but as the first object of France was not to benefit America, but to injure England, sound military judgment dictated that the continental strife, so far from being helped to a conclusion, should be kept in vigorous life. It was a diversion ready made to the hand of France and exhausting to Great Britain, requiring only so much support as would sustain a resistance to which the insurgents were bound by the most desperate alternatives. The territory of the thirteen colonies therefore should not be the principal objective of France; much less that of Spain.
The commercial value of the English West Indies made them tempting objects to the French, who adapted themselves with peculiar readiness to the social conditions of that region, in which their colonial possessions were already extensive. Besides the two finest of the Lesser Antilles, Guadeloupe and Martinique, which she still retains, France then held Sta. Lucia and the western half of Hayti. She might well hope by successful war to add most of the English Antilles, and thus to round off a truly imperial tropical dependency; while, though debarred from Jamaica by the susceptibilities of Spain, it might be possible to win back that magnificent island for an allied and weaker nation. But however desirable as possessions, and therefore as objects, the smaller Antilles might be, their military tenure depended too entirely upon control of the sea for them to be in themselves proper objectives. The French government, therefore, forbade its naval commanders to occupy such as they might seize. They were to make the garrisons prisoners, destroy the defences, and so retire. In the excellent military port of Fort Royal, Martinique, in Cap Français, and in the strong allied harbor of Havana, a fleet of adequate size found good, secure, and well-distributed bases; while the early and serious loss of Sta. Lucia must be attributed to the mismanagement of the French fleet and the professional ability of the English admiral. On shore, in the West Indies, the rival powers therefore found themselves about equally provided with the necessary points of support; mere occupation of others could not add to their military strength, thenceforth dependent upon the numbers and quality of the fleets. To extend occupation further with safety, the first need was to obtain maritime supremacy, not only locally, but over the general field of war. Otherwise occupation was precarious, unless enforced by a body of troops so large as to entail expense beyond the worth of the object. The key of the situation in the West Indies being thus in the fleets, these became the true objectives of the military effort; and all the more so because the real military usefulness of the West Indian ports in this war was as an intermediate base, between Europe and the American continent, to which the fleets retired when the armies went into winter quarters. No sound strategic operation on shore was undertaken in the West Indies except the seizure of Sta. Lucia by the English, and the abortive plan against Jamaica in 1782; nor was any serious attempt against a military port, as Barbadoes or Fort Royal, possible, until naval preponderance was assured either by battle or by happy concentration of force. The key of the situation, it must be repeated, was in the fleet.
The influence of naval power, of an armed fleet, upon the war on the American continent has also been indicated in the opinions of Washington and Sir Henry Clinton; while the situation in the East Indies, regarded as a field by itself, has been so largely discussed under the head of Suffren's campaign, that it needs here only to repeat that everything there depended upon control of the sea by a superior naval force. The capture of Trincomalee, essential as it was to the French squadron which had no other base, was, like that of Sta. Lucia, a surprise, and could only have been effected by the defeat, or, as happened, by the absence of the enemy's fleet. In North America and India sound military policy pointed out, as the true objective, the enemy's fleet, upon which also depended the communications with the mother-countries. There remains Europe, which it is scarcely profitable to examine at length as a separate field of action, because its relations to the universal war are so much more important. It may simply be pointed out that the only two points in Europe whose political transfer was an object of the war were Gibraltar and Minorca; the former of which was throughout, by the urgency of Spain, made a principal objective of the allies. The tenure of both these depended, obviously, upon control of the sea.
In a sea war, as in all others, two things are from the first essential,--a suitable base upon the frontier, in this case the seaboard, from which the operations start, and an organized military force, in this case a fleet, of size and quality adequate to the proposed operations. If the war, as in the present instance, extends to distant parts of the globe, there will be needed in each of those distant regions secure ports for the shipping, to serve as secondary, or contingent, bases of the local war. Between these secondary and the principal, or home, bases there must be reasonably secure communication, which will depend upon military control of the intervening sea. This control must be exercised by the navy, which will enforce it either by clearing the sea in all directions of hostile cruisers, thus allowing the ships of its own nation to pass with reasonable security, or by accompanying in force (convoying) each train of supply-ships necessary for the support of the distant operations. The former method aims at a widely diffused effort of the national power, the other at a concentration of it upon that part of the sea where the convoy is at a given moment. Whichever be adopted, the communications will doubtless be strengthened by the military holding of good harbors, properly spaced yet not too numerous, along the routes,--as, for instance, the Cape of Good Hope and the Mauritius. Stations of this kind have always been necessary, but are doubly so now, as fuel needs renewing more frequently than did the provisions and supplies in former days. These combinations of strong points at home and abroad, and the condition of the communications between them, may be called the strategic features of the general military situation, by which, and by the relative strength of the opposing fleets, the nature of the operations must be determined. In each of the three divisions of the field, Europe, America, and India, under which for sake of clearness the narrative has been given, the control of the sea has been insisted upon as the determining factor, and the hostile fleet therefore indicated as the true objective. Let the foregoing considerations now be applied to the whole field of war, and see how far the same conclusion holds good of it, and if so, what should have been the nature of the operations on either side.
In Europe the home base of Great Britain was on the English Channel, with the two principal arsenals of Plymouth and Portsmouth. The base of the allied powers was on the Atlantic, the principal military ports being Brest, Ferrol, and Cadiz. Behind these, within the Mediterranean, were the dock-yards of Toulon and Cartagena, over against which stood the English station Port Mahon, in Minorca. The latter, however, may be left wholly out of account, being confined to a defensive part during the war, as the British fleet was not able to spare any squadron to the Mediterranean. Gibraltar, on the contrary, by its position, effectually watched over detachments or reinforcements from within the Straits, provided it were utilized as the station of a body of ships adequate to the duty. This was not done; the British European fleet being kept tied to the Channel, that is, to home defence, and making infrequent visits to the Rock to convoy supplies essential to the endurance of the garrison. There was, however, a difference in the parts played by Port Mahon and Gibraltar. The former, being at the time wholly unimportant, received no attention from the allies until late in the war, when it fell after a six months' siege; whereas the latter, being considered of the first importance, absorbed from the beginning a very large part of the allied attack, and so made a valuable diversion in favor of Great Britain. To this view of the principal features of the natural strategic situation in Europe may properly be added the remark, that such aid as Holland might be inclined to send to the allied fleets had a very insecure line of communication, being forced to pass along the English base on the Channel. Such aid in fact was never given.
In North America the local bases of the war at its outbreak were New York, Narragansett Bay, and Boston. The two former were then held by the English, and were the most important stations on the continent, from their position, susceptibility of defence, and resources. Boston had passed into the hands of the Americans, and was therefore at the service of the allies. From the direction actually given to the war, by diverting the active English operations to the Southern States in 1779, Boston was thrown outside the principal theatre of operations, and became from its position militarily unimportant; but had the plan been adopted of isolating New England by holding the line of the Hudson and Lake Champlain, and concentrating military effort to the eastward, it will be seen that these three ports would all have been of decisive importance to the issue. South of New York, the Delaware and Chesapeake Bays undoubtedly offered tempting fields for maritime enterprise; but the width of the entrances, the want of suitable and easily defended points for naval stations near the sea, the wide dispersal of the land forces entailed by an attempt to hold so many points, and the sickliness of the locality during a great part of the year, should have excepted them from a principal part in the plan of the first campaigns. It is not necessary to include them among the local bases of the war. To the extreme south the English were drawn by the ignis fatuus of expected support among the people. They failed to consider that even if a majority there preferred quiet to freedom, that very quality would prevent them from rising against the revolutionary government by which, on the English theory, they were oppressed; yet upon such a rising the whole success of this distant and in its end most unfortunate enterprise was staked. The local base of this war apart was Charleston, which passed into the hands of the British in May, 1780, eighteen months after the first expedition had landed in Georgia.
The principal local bases of the war in the West Indies are already known through the previous narrative. They were for the English, Barbadoes, Sta. Lucia, and to a less degree Antigua. A thousand miles to leeward was the large island of Jamaica, with a dock-yard of great natural capabilities at Kingston. The allies held, in the first order of importance, Fort Royal in Martinique, and Havana; in the second order, Guadeloupe and Cap Français. A controlling feature of the strategic situation in that day, and one which will not be wholly without weight in our own, was the trade-wind, with its accompanying current. A passage to windward against these obstacles was a long and serious undertaking even for single ships, much more for larger bodies. It followed that fleets would go to the western islands only reluctantly, or when assured that the enemy had taken the same direction, as Rodney went to Jamaica after the Battle of the Saints, knowing the French fleet to have gone to Cap Français. This condition of the wind made the windward, or eastern, islands points on the natural lines of communication between Europe and America, as well as local bases of the naval war, and tied the fleets to them. Hence also it followed that between the two scenes of operations, between the continent and the Lesser Antilles, was interposed a wide central region into which the larger operations of war could not safely be carried except by a belligerent possessed of great naval superiority, or unless a decisive advantage had been gained upon one flank. In 1762, when England held all the Windward Islands, with undisputed superiority at sea, she safely attacked and subdued Havana; but in the years 1779-1782 the French sea power in America and the French tenure of the Windward Islands practically balanced her own, leaving the Spaniards at Havana free to prosecute their designs against Pensacola and the Bahamas, in the central region mentioned.
Posts like Martinique and Sta. Lucia had therefore for the present war great strategic advantage over Jamaica, Havana, or others to leeward. They commanded the latter in virtue of their position, by which the passage westward could be made so much more quickly than the return; while the decisive points of the continental struggle were practically little farther from the one than from the other. This advantage was shared equally by most of those known as the Lesser Antilles; but the small island of Barbadoes, being well to windward of all, possessed peculiar advantages, not only for offensive action, but because it was defended by the difficulty with which a large fleet could approach it, even from so near a port as Fort Royal. It will be remembered that the expedition which finally sat down before St. Kitt's had been intended for Barbadoes, but could not reach it through the violence of the trade-wind. Thus Barbadoes, under the conditions of the time, was peculiarly fitted to be the local base and depot of the English war, as well as a wayside port of refuge on the line of communications to Jamaica, Florida, and even to North America; while Sta. Lucia, a hundred miles to leeward, was held in force as an advanced post for the fleet, watching closely the enemy at Fort Royal.
In India the political conditions of the peninsula necessarily indicated the eastern, or Coromandel, coast as the scene of operations. Trincomalee, in the adjacent island of Ceylon, though unhealthy, offered an excellent and defensible harbor, and thus acquired first-rate strategic importance, all the other anchorages on the coast being mere open roadsteads. From this circumstance the trade-winds, or monsoons, in this region also had strategic bearing. From the autumnal to the spring equinox the wind blows regularly from the northeast, at times with much violence, throwing a heavy surf upon the beach and making landing difficult; but during the summer months the prevailing wind is southwest, giving comparatively smooth seas and good weather. The "change of the monsoon," in September and October, is often marked by violent hurricanes. Active operations, or even remaining on the coast, were therefore unadvisable from this time until the close of the northeast monsoon. The question of a port to which to retire during this season was pressing. Trincomalee was the only one, and its unique strategic value was heightened by being to windward, during the fine season, of the principal scene of war. The English harbor of Bombay on the west coast was too distant to be considered a local base, and rather falls, like the French islands Mauritius and Bourbon, under the head of stations on the line of communications with the mother-country.
Such were the principal points of support, or bases, of the belligerent nations, at home and abroad. Of those abroad it must be said, speaking generally, that they were deficient in resources,--an important element of strategic value. Naval and military stores and equipments, and to a great extent provisions for sea use, had to be sent them from the mother-countries. Boston, surrounded by a thriving, friendly population, was perhaps an exception to this statement, as was also Havana, at that time an important naval arsenal, where much ship-building was done; but these were distant from the principal theatres of war. Upon New York and Narragansett Bay the Americans pressed too closely for the resources of the neighboring country to be largely available, while the distant ports of the East and West Indies depended wholly upon home. Hence the strategic question of communications assumed additional importance. To intercept a large convoy of supply-ships was an operation only secondary to the destruction of a body of ships-of-war; while to protect such by main strength, or by evading the enemy's search, taxed the skill of the governments and naval commanders in distributing the ships-of-war and squadrons at their disposal, among the many objects which demanded attention. The address of Kempenfeldt and the bad management of Guichen in the North Atlantic, seconded by a heavy gale of wind, seriously embarrassed De Grasse in the West Indies. Similar injury, by cutting off small convoys in the Atlantic, was done to Suffren in the Indian seas: while the latter at once made good part of these losses, and worried his opponents by the success of his cruisers preying on the English supply-ships.
Thus the navies, by which alone these vital streams could be secured or endangered, bore the same relation to the maintenance of the general war that has already been observed of the separate parts. They were the links that bound the whole together, and were therefore indicated as the proper objective of both belligerents.
The distance from Europe to America was not such as to make intermediate ports of supply absolutely necessary; while if difficulty did arise from an unforeseen cause, it was always possible, barring meeting an enemy, either to return to Europe or to make a friendly port in the West Indies. The case was different with the long voyage to India by the Cape of Good Hope. Bickerton, leaving England with a convoy in February, was thought to have done well in reaching Bombay the following September; while the ardent Suffren, sailing in March, took an equal time to reach Mauritius, whence the passage to Madras consumed two months more. A voyage of such duration could rarely be made without a stop for water, for fresh provision, often for such refitting as called for the quiet of a harbor, even when the stores on board furnished the necessary material. A perfect line of communications required, as has been said, several such harbors, properly spaced, adequately defended, and with abundant supplies, such as England in the present day holds on some of her main commercial routes, acquisitions of her past wars. In the war of 1778 none of the belligerents had such ports on this route, until by the accession of Holland, the Cape of Good Hope was put at the disposal of the French and suitably strengthened by Suffren. With this and the Mauritius on the way, and Trincomalee at the far end of the road, the communications of the allies with France were reasonably guarded. England, though then holding St. Helena, depended, for the refreshment and refitting of her India-bound squadrons and convoys in the Atlantic, upon the benevolent neutrality of Portugal, extended in the islands of Madeira and Cape Verde and in the Brazilian ports. This neutrality was indeed a frail reliance for defence, as was shown by the encounter between Johnstone and Suffren at the Cape Verde; but there being several possible stopping-places, and the enemy unable to know which, if any, would be used, this ignorance itself conferred no small security, if the naval commander did not trust it to the neglect of proper disposition of his own force, as did Johnstone at Porto Praya. Indeed, with the delay and uncertainty which then characterized the transmission of intelligence from one point to another, doubt where to find the enemy was a greater bar to offensive enterprises than the often slight defences of a colonial port.
This combination of useful harbors and the conditions of the communications between them constitute, as has been said, the main strategic outlines of the situation. The navy, as the organized force linking the whole together, has been indicated as the principal objective of military effort. The method employed to reach the objective, the conduct of the war, is still to be considered.
Before doing this a condition peculiar to the sea, and affecting the following discussion, must be briefly mentioned; that is, the difficulty of obtaining information. Armies pass through countries more or less inhabited by a stationary population, and they leave behind them traces of their march. Fleets move through a desert over which wanderers flit, but where they do not remain; and as the waters close behind them, an occasional waif from the decks may indicate their passage, but tells nothing of their course. The sail spoken by the pursuer may know nothing of the pursued, which yet passed the point of parley but a few days or hours before. Of late, careful study of the winds and currents of the ocean has laid down certain advantageous routes, which will be habitually followed by a careful seaman, and afford some presumption as to his movements; but in 1778 the data for such precision were not collected, and even had they been, the quickest route must often have been abandoned for one of the many possible ones, in order to elude pursuit or lying-in-wait. In such a game of hide-and-seek the advantage is with the sought, and the great importance of watching the outlets of an enemy's country, of stopping the chase before it has got away into the silent desert, is at once evident. If for any reason such a watch there is impossible, the next best thing is, not attempting to watch routes which may not be taken, to get first to the enemy's destination and await him there; but this implies a knowledge of his intentions which may not always be obtainable. The action of Suffren, when pitted against Johnstone, was throughout strategically sound, both in his attack at Porto Praya and in the haste with which he made for their common destination; while the two failures of Rodney to intercept the convoys to Martinique in 1780 and 1782, though informed that they were coming, show the difficulty which attended lying-in-wait even when the point of arrival was known.
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End of part 30 of 31
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