The Interest of America in Sea Power, Present and Future Part 6

We have thus the two centres round which revolve all the military study of the Caribbean Sea and the Gulf of Mexico. The two sheets of water, taken together, control or affect the approaches on one side to these two supreme centres of commercial, and therefore of political and military, interest. The approaches on the other side--the interior communications of the Mississippi, that is, or the maritime routes in the Pacific converging upon the Isthmus--do not here concern us.

These approaches, in terms of military art, are known as the "communications." Communications are probably the most vital and determining element in strategy, military or naval. They are literally the most radical; for all military operations depend upon communications, as the fruit of a plant depends upon communication with its root. We draw therefore upon the map the chief lines by which communication exists between these two centres and the outside world. Such lines represent the mutual dependence of the centres and the exterior, by which each ministers to the others, and by severance of which either becomes useless to the others. It is from their potential effect upon these lines of communication that all positions in the Gulf or the Caribbean derive their military value, or want of value.

It is impossible to precede or to accompany a discussion of this sort with a technical exposition of naval strategy. Such definitions of the art as may be needed must be given _in loco_, cursorily and dogmatically. Therefore it will be said here briefly that the strategic value of any position, be it body of land large or small, or a seaport, or a strait, depends, 1, upon situation (with reference chiefly to communications), 2, upon its strength (inherent or acquired), and, 3, upon its resources (natural or stored). As strength and resources are matters which man can acc.u.mulate where suitable situation offers, whereas he cannot change the location of a place in itself otherwise advantageous, it is upon situation that attention must primarily be fixed. Strength and resources may be artificially supplied or increased, but it pa.s.ses the power of man to move a port which lies outside the limits of strategic effect. Gibraltar in mid-ocean might have fourfold its present power, yet would be valueless in a military sense.

The positions which are indicated on the map by the dark squares have been selected, therefore, upon these considerations, after a careful study of the inherent advantages of the various ports and coast-lines of the Caribbean Sea and the Gulf. It is by no means meant that there are not others which possess merits of various kinds; or that those indicated, and to be named, exhaust the strategic possibilities of the region under examination. But there are qualifying circ.u.mstances of degree in particular cases; and a certain regard must be had to political conditions, which may be said to a great extent to neutralize some positions. Some, too, are excluded because overshadowed by others so near and so strong as practically to embrace them, when under the same political tenure. Moreover, it is a commonplace of strategy that pa.s.sive positions, fortified places, however strong, although indispensable as supports to military operations, should not be held in great number. To do so wastes force.

Similarly, in the study of a field of maritime operations, the number of available positions, whose relative and combined influence upon the whole is to be considered, should be narrowed, by a process of gradual elimination, to those clearly essential and representative. To embrace more confuses the attention, wastes mental force, and is a hindrance to correct appreciation. The rejection of details, where permissible, and understandingly done, facilitates comprehension, which is baffled by a multiplication of minutiae, just as the impression of a work of art, or of a story, is lost amid a multiplicity of figures or of actors. The investigation precedent to formulation of ideas must be close and minute, but that done, the unbia.s.sed selection of the most important, expressed graphically by a few lines and a few dots, leads most certainly to the comprehension of decisive relations in a military field of action.

In the United States, Pensacola and the Mississippi River have been rivals for the possession of a navy-yard. The recent decision of a specially appointed board in favor of the latter, while it commands the full a.s.sent of the writer, by no means eliminates the usefulness of the former. Taken together, they fulfil a fair requirement of strategy, sea and land, that operations based upon a national frontier, which a coast-line is, should not depend upon a single place only. They are closer together than ideal perfection would wish; too easily, therefore, to be watched by an enemy without great dispersal of his force, which Norfolk and New York, for instance, are not; but still, conjointly, they are the best we can do on that line, having regard to the draught of water for heavy s.h.i.+ps. Key West, an island lying off the end of the Florida Peninsula, has long been recognized as the chief, and almost the only, good and defensible anchorage upon the Strait of Florida, reasonable control of which is indispensable to water communication between our Atlantic and Gulf seaboards in time of war. In case of war in the direction of the Caribbean, Key West is the extreme point now in our possession upon which, granting adequate fortification, our fleets could rely; and, so used, it would effectually divert an enemy's force from Pensacola and the Mississippi. It can never be the ultimate base of operations, as Pensacola or New Orleans can, because it is an island, a small island, and has no resources--not even water; but for the daily needs of a fleet--coal, ammunition, etc.--it can be made most effective. Sixty miles west of it stands an antiquated fortress on the Dry Tortugas.

These are capable of being made a useful adjunct to Key West, but at present they scarcely can be so considered. Key West is 550 miles distant from the mouth of the Mississippi, and 1200 from the Isthmus.

The islands of Santa Lucia and of Martinique have been selected because they represent the chief positions of, respectively, Great Britain and France on the outer limits of the general field under consideration. For the reasons already stated, Grenada, Barbadoes, Dominica, and the other near British islands are not taken into account, or rather are considered to be embraced in Santa Lucia, which adequately represents them. If a secondary position on that line were required, it would be at Antigua, which would play to Santa Lucia the part which Pensacola does to the Mississippi. In like manner the French Guadeloupe merges in Martinique. The intrinsic importance of these positions consists in the fact that, being otherwise suitable and properly defended, they are the nearest to the mother-countries, between whom and themselves there lies no point of danger near which it is necessary to pa.s.s. They have the disadvantage of being very small islands, consequently without adequate natural resources, and easy to be blockaded on all sides. They are therefore essentially dependent for their usefulness in war upon control of the sea, which neither Pensacola nor New Orleans is, having the continent at their backs.

It is in this respect that the pre-eminent intrinsic advantages of Cuba, or rather of Spain in Cuba, are to be seen; and also, but in much less degree, those of Great Britain in Jamaica. Cuba, though narrow throughout, is over six hundred miles long, from Cape San Antonio to Cape Maysi. It is, in short, not so much an island as a continent, susceptible, under proper development, of great resources--of self-sufficingness. In area it is half as large again as Ireland, but, owing to its peculiar form, is much more than twice as long. Marine distances, therefore, are drawn out to an extreme degree.

Its many natural harbors concentrate themselves, to a military examination, into three princ.i.p.al groups, whose representatives are, in the west, Havana; in the east, Santiago; while near midway of the southern sh.o.r.e lies Cienfuegos. The shortest water distance separating any two of these is 335 miles, from Santiago to Cienfuegos. To get from Cienfuegos to Havana 450 miles of water must be traversed and the western point of the island doubled; yet the two ports are distant by land only a little more than a hundred miles of fairly easy country.

Regarded, therefore, as a base of naval operations, as a source of supplies to a fleet, Cuba presents a condition wholly unique among the islands of the Caribbean and of the Gulf of Mexico; to both which it, and it alone of all the archipelago, belongs. It is unique in its size, which should render it largely self-supporting, either by its own products, or by the acc.u.mulation of foreign necessaries which naturally obtains in a large and prosperous maritime community; and it is unique in that such supplies can be conveyed from one point to the other, according to the needs of a fleet, by interior lines, not exposed to risks of maritime capture. The extent of the coast-line, the numerous harbors, and the many directions from which approach can be made, minimize the dangers of total blockade, to which all islands are subject. Such conditions are in themselves advantageous, but they are especially so to a navy inferior to its adversary, for they convey the power--subject, of course, to conditions of skill--of s.h.i.+fting operations from side to side, and finding refuge and supplies in either direction.

Jamaica, being but one-tenth the size of Cuba, and one-fifth of its length, does not present the intrinsic advantages of the latter island, regarded either as a source of supplies or as a centre from which to direct effort; but when in the hands of a power supreme at sea, as at the present Great Britain is, the questions of supplies, of blockade, and of facility in direction of effort diminish in importance. That which in the one case is a matter of life and death, becomes now only an embarra.s.sing problem, necessitating watchfulness and precaution, but by no means insoluble. No advantages of position can counterbalance, in the long-run, decisive inferiority in organized mobile force,--inferiority in troops in the field, and yet much more in s.h.i.+ps on the sea. If Spain should become involved in war with Great Britain, as she so often before has been, the advantage she would have in Cuba as against Jamaica would be that her communications with the United States, especially with the Gulf ports, would be well under cover. By this is not meant that vessels bound to Cuba by such routes would be in una.s.sailable security; no communications, maritime or terrestrial, can be so against raiding. What is meant is that they can be protected with much less effort than they can be attacked; that the raiders--the offence--must be much more numerous and active than the defence, because much farther from their base; and that the question of such raiding would depend consequently upon the force Great Britain could spare from other scenes of war, for it is not likely that Spain would fight her single-handed. It is quite possible that under such conditions advantage of position would more than counterbalance a _small_ disadvantage in local force. "War," said Napoleon, "is a business of positions;" by which that master of lightning-like rapidity of movement a.s.suredly did not mean that it was a business of getting into a position and sticking there. It is in the utilization of position by mobile force that war is determined, just as the effect of a chessman depends upon both its individual value _and_ its relative position. While, therefore, in the combination of the two factors, force and position, force is intrinsically the more valuable, it is always possible that great advantage of position may outweigh small advantage of force, as 1 + 5 is greater than 2 + 3. The positional value of Cuba is extremely great.

Regarded solely as a naval position, without reference to the force thereon based, Jamaica is greatly inferior to Cuba in a question of general war, notwithstanding the fact that in Kingston it possesses an excellent harbor and naval station. It is only with direct reference to the Isthmus, and therefore to the local question of the Caribbean as the main scene of hostilities, that it possesses a certain superiority which will be touched on later. It is advisable first to complete the list, and so far as necessary to account for the selection, of the other points indicated by the squares.

Of these, three are so nearly together at the Isthmus that, according to the rule before adopted, they might be reduced very properly to a single representative position. Being, however, so close to the great centre of interest in the Caribbean, and having different specific reasons const.i.tuting their importance, it is essential to a full statement of strategic conditions in that sea to mention briefly each and all. They are, the harbor and town of Colon, sometimes called Aspinwall; the harbor and city of Cartagena, 300 miles to the eastward of Colon; and the Chiriqui Lagoon, 150 miles west of Colon, a vast enclosed bay with many islands, giving excellent and diversified anchorage, the sh.o.r.es of which are nearly uninhabited. Colon is the Caribbean terminus of the Panama Railroad, and is also that of the ca.n.a.l projected, and partly dug, under the De Lesseps scheme. The harbor being good, though open to some winds, it is naturally indicated as a point where Isthmian transit may begin or end. As there is no intention of entering into the controversy about the relative merits of the Panama and Nicaragua ca.n.a.l schemes, it will be sufficient here to say that, if the former be carried through, Colon is its inevitable issue on one side. The city of Cartagena is the largest and most flouris.h.i.+ng in the neighborhood of the Isthmus, and has a good harbor. With these conditions obtaining, its advantage rests upon the axiomatic principle that, other things being nearly equal, a place where commerce centres is a better strategic position than one which it neglects. The latter is the condition of the Chiriqui Lagoon. This truly n.o.ble sheet of water, which was visited by Columbus himself, and bears record of the fact in the name of one of its basins,--the Bay of the Admiral,--has every natural adaptation for a purely naval base, but has not drawn to itself the operations of commerce. Everything would need there to be created, and to be maintained continuously. It lies midway between Colon and the mouth of the river San Juan, where is Greytown, which has been selected as the issue of the projected Nicaragua Ca.n.a.l; and therefore, in a peculiar way, Chiriqui symbolizes the present indeterminate phase of the Isthmian problem. With all its latent possibilities, however, little can be said now of Chiriqui, except that a rough appreciation of its existence and character is essential to an adequate understanding of Isthmian conditions.

The Dutch island of Curacao has been marked, chiefly because, with its natural characteristics, it cannot be pa.s.sed over; but it now is, and it may be hoped will remain indefinitely, among the positions of which it has been said that they are neutralized by political circ.u.mstances.

Curacao possesses a fine harbor, which may be made impregnable, and it lies unavoidably near the route of any vessel bound to the Isthmus and pa.s.sing eastward of Jamaica. Such conditions const.i.tute undeniable military importance; but Holland is a small state, unlikely to join again in a general war. There is, indeed, a floating apprehension that the German Empire, in its present desires of colonial extension, may be willing to absorb Holland, for the sake of her still extensive colonial possessions. Improbable as this may seem, it is scarcely more incomprehensible than the recent mysterious movements upon the European chess-board, attributed by common rumor to the dominating influence of the Emperor of Germany, which we puzzled Americans for months past have sought in vain to understand.

The same probable neutrality must be admitted for the remaining positions that have been distinguished: Mujeres Island, Samana Bay, and the island of St. Thomas. The first of these, at the extremity of the Yucatan Peninsula, belongs to Mexico, a country whose interest in the Isthmian question is very real; for, like the United States, she has an extensive seaboard both upon the Pacific and--in the Gulf of Mexico--upon the Atlantic Ocean. Mujeres Island, however, has nothing to offer but situation, being upon the Yucatan Pa.s.sage, the one road from all the Gulf ports to the Caribbean and the Isthmus. The anchorage is barely tolerable, the resources _nil_, and defensive strength could be imparted only by an expense quite disproportionate to the result obtained. The consideration of the island as a possible military situation does but emphasize the fact, salient to the most superficial glance, that, so far as position goes, Cuba has no possible rival in her command of the Yucatan Pa.s.sage, just as she has no compet.i.tor, in point of natural strength and resources, for the control of the Florida Strait, which connects the Gulf of Mexico with the Atlantic.

Samana Bay, at the northeast corner of Santo Domingo, is but one of several fine anchorages in that great island, whose territory is now divided between two negro republics--French and Spanish in tongue. Its selection to figure in our study, to the exclusion of the others, is determined by its situation, and by the fact that we are seeking to take a comprehensive glance of the Caribbean as a whole, and not merely of particular districts. For instance, it might be urged forcibly, in view of the existence of two great naval ports like Santiago de Cuba and Port Royal in Jamaica, close to the Windward Pa.s.sage, through which lies the direct route from the Atlantic seaboard to the Isthmus, that St. Nicholas Mole, immediately on the Pa.s.sage, offers the natural position for checking the others in case of need. The reply is that we are not seeking to check anything or anybody, but simply examining in the large the natural strategic features, and incidentally thereto noting the political conditions, of a maritime region in which the United States is particularly interested; political conditions, as has been remarked, having an unavoidable effect upon military values.

The inquiry being thus broad, Samana Bay and the island of St. Thomas are ent.i.tled to the pre-eminence here given to them, because they represent, efficiently and better than any other positions, the control of two princ.i.p.al pa.s.sages into the Caribbean Sea from the Atlantic. The Mona Pa.s.sage, on which Samana lies, between Santo Domingo and Puerto Rico, is particularly suited to sailing-vessels from the northward, because free from dangers to navigation. This, of course, in these days of steam, is a small matter militarily; in the latter sense the Mona Pa.s.sage is valuable because it is an alternative to the Windward Pa.s.sage, or to those to the eastward, in case of hostile predominance in one quarter or the other. St. Thomas is on the Anegada Pa.s.sage, actually much used, and which better than any other represents the course from Europe to the Isthmus, just as the Windward Pa.s.sage does that from the North American Atlantic ports. Neither of these places can boast of great natural strength nor of resources; St.

Thomas, because it is a small island with the inherent weaknesses attending all such, which have been mentioned; Samana Bay, because, although the island on which it is is large and productive, it has not now, and gives no hope of having, that political stability and commercial prosperity which bring resources and power in their train.

Both places would need also considerable development of defensive works to meet the requirements of a naval port. Despite these defects, their situations on the pa.s.sages named ent.i.tle them to paramount consideration in a general study of the Caribbean Sea and the Gulf of Mexico. Potentially, though not actually, they lend control of the Mona and Anegada Pa.s.sages, exactly as Kingston and Santiago do of the Windward.

For, granting that the Isthmus is in the Caribbean the predominant interest, commercial, and therefore concerning the whole world, but also military, and so far possessing peculiar concern for those nations whose territories lie on both oceans, which it now severs and will one day unite--of which nations the United States is the most prominent--granting this, and it follows that entrance to the Caribbean, and transit across the Caribbean to the Isthmus, are two prime essentials to the enjoyment of the advantages of the latter.

Therefore, in case of war, control of these two things becomes a military object not second to the Isthmus itself, access to which depends upon them; and in their bearing upon these two things the various positions that are pa.s.sed under consideration must be viewed--individually first, and afterwards collectively.

The first process of individual consideration the writer has asked the reader to take on faith; neither time nor s.p.a.ce permits its elaboration here; but the reasons for choosing those that have been named have been given as briefly as possible. Let us now look at the map, and regard as a collective whole the picture there graphically presented.

Putting to one side, for the moment at least, the Isthmian points, as indicating the end rather than the precedent means, we see at the present time that the positions at the extremes of the field under examination are held by Powers of the first rank,--Martinique and Santa Lucia by France and Great Britain, Pensacola and the Mississippi by the United States.

Further, there are held by these same states of the first order two advanced positions, widely separated from the first bases of their power; namely, Key West, which is 460 miles from Pensacola, and Jamaica, which is 930 miles from Santa Lucia. From the Isthmus, Key West is distant 1200 miles; Jamaica, 500 miles.

Between and separating these two groups, of primary bases and advanced posts, extends the chain of positions from Yucatan to St. Thomas. As far as is possible to position, apart from mobile force, these represent control over the northern entrances--the most important entrances--into the Caribbean Sea. No one of this chain belongs to any of the Powers commonly reckoned as being of the first order of strength.

The entrances on the north of the sea, as far as, but not including, the Anegada Pa.s.sage, are called the most important, because they are so few in number,--a circ.u.mstance which always increases value; because they are so much nearer to the Isthmus; and, very especially to the United States, because they are the ones by which, and by which alone,--except at the cost of a wide circuit,--she communicates with the Isthmus, and, generally, with all the region lying within the borders of the Caribbean.

In a very literal sense the Caribbean is a mediterranean sea; but the adjective must be qualified when comparison is made with the Mediterranean of the Old World or with the Gulf of Mexico. The last-named bodies of water communicate with the outer oceans by pa.s.sages so contracted as to be easily watched from near-by positions, and for both there exist such positions of exceptional strength,--Gibraltar and some others in the former case, Havana and no other in the latter.

The Caribbean, on the contrary, is enclosed on its eastern side by a chain of small islands, the pa.s.sages between which, although practically not wider than the Strait of Gibraltar, are so numerous that entrance to the sea on that side may be said correctly to extend over a stretch of near 400 miles. The islands, it is true, are so many positions, some better, some worse, from which military effort to control entrance can be exerted; but their number prevents that concentration and that certainty of effect which are possible to adequate force resting upon Gibraltar or Havana.

On the northern side of the sea the case is quite different. From the western end of Cuba to the eastern end of Puerto Rico extends a barrier of land for 1200 miles--as against 400 on the east--broken only by two straits, each fifty miles wide, from side to side of which a steamer of but moderate power can pa.s.s in three or four hours. These natural conditions, governing the approach to the Isthmus, reproduce as nearly as possible the strategic effect of Ireland upon Great Britain. There a land barrier of 300 miles, midway between the Pentland Firth and the English Channel--centrally situated, that is, with reference to all the Atlantic approaches to Great Britain--gives to an adequate navy a unique power to flank and hara.s.s either the one or the other, or both. Existing political conditions and other circ.u.mstances unquestionably modify the importance of these two barriers, relatively to the countries affected by them. Open communication with the Atlantic is vital to Great Britain, which the Isthmus, up to the present time, is not to the United States. There are, however, varying degrees of importance below that which is vital.

Taking into consideration that of the 1200-mile barrier to the Caribbean 600 miles is solid in Cuba, that after the 50-mile gap of the Windward Pa.s.sage there succeeds 300 miles more of Haiti before the Mona Pa.s.sage is reached, it is indisputable that a superior navy, resting on Santiago de Cuba or Jamaica, could very seriously incommode all access of the United States to the Caribbean mainland, and especially to the Isthmus.

In connection with this should be considered also the influence upon our mercantile and naval communication between the Atlantic and the Gulf coasts exercised by the peninsula of Florida, and by the narrowness of the channels separating the latter from the Bahama Banks and from Cuba. The effect of this long and not very broad strip of land upon our maritime interests can be realized best by imagining it wholly removed, or else turned into an island by a practicable channel crossing its neck. In the latter case the two entrances to the channel would have indeed to be a.s.sured; but our s.h.i.+pping would not be forced to pa.s.s through a long, narrow waterway, bordered throughout on one side by foreign and possibly hostile territories. In case of war with either Great Britain or Spain, this channel would be likely to be infested by hostile cruisers, close to their own base, the very best condition for a commerce-destroying war; and its protection by us under present circ.u.mstances will exact a much greater effort than with the supposed channel, or than if the Florida Peninsula did not exist.

The effect of the peninsula is to thrust our route from the Atlantic to the Gulf 300 miles to the southward, and to make imperative a base for control of the strait; while the case is made worse by an almost total lack of useful harbors. On the Atlantic, the most exposed side, there is none; and on the Gulf none nearer to Key West than 175 miles,[2] where we find Tampa Bay. There is, indeed, nothing that can be said about the interests of the United States in an Isthmian ca.n.a.l that does not apply now with equal force to the Strait of Florida. The one links the Atlantic to the Gulf, as the other would the Atlantic to the Pacific. It may be added here that the phenomenon of the long, narrow peninsula of Florida, with its strait, is reproduced successively in Cuba, Haiti, and Puerto Rico, with the pa.s.sages dividing them. The whole together forms one long barrier, the strategic significance of which cannot be overlooked in its effect upon the Caribbean; while the Gulf of Mexico is a.s.signed to absolute seclusion by it, if the pa.s.sages are in hostile control.

[2] There is Charlotte Harbor, at 120 miles, but it can be used only by medium-sized vessels.

The relations of the island of Jamaica to the great barrier formed by Cuba, Haiti, and Puerto Rico are such as to const.i.tute it the natural stepping-stone by which to pa.s.s from the consideration of entrance into the Caribbean, which has been engaging our attention, to that of the transit across, from entrance to the Isthmus, which we must next undertake.

In the matters of entrance to the Caribbean, and of general interior control of that sea, Jamaica has a singularly central position. It is equidistant (500 miles) from Colon, from the Yucatan Channel, and from the Mona Pa.s.sage; it is even closer (450 miles) to the nearest mainland of South America at Point Gallinas, and of Central America at Cape Gracias-a-Dios; while it lies so immediately in rear of the Windward Pa.s.sage that its command of the latter can scarcely be considered less than that of Santiago. The a.n.a.logy of its situation, as a station for a great fleet, to that for an army covering a frontier which is pa.s.sable at but a few points, will scarcely escape a military reader. A comparatively short chain of swift lookout steamers, in each direction, can give timely notice of any approach by either of the three pa.s.sages named; while, if entrance be gained at any other point, the arms stretched out towards Gallinas and Gracias-a-Dios will give warning of transit before the purposes of such transit can be accomplished undisturbed.

With such advantages of situation, and with a harbor susceptible of satisfactory development as a naval station for a great fleet, Jamaica is certainly the most important single position in the Caribbean Sea.

When one recalls that it pa.s.sed into the hands of Great Britain, in the days of Cromwell, by accidental conquest, the expedition having been intended primarily against Santo Domingo; that in the two centuries and a half which have since intervened it has played no part adequate to its advantages, such as now looms before it; that, by all the probabilities, it should have been reconquered and retained by Spain in the war of the American Revolution; and when, again, it is recalled that a like accident and a like subsequent uncertainty attended the conquest and retention of the decisive Mediterranean positions of Gibraltar and Malta, one marvels whether incidents so widely separated in time and place, all tending towards one end--the maritime predominance of Great Britain--can be accidents, or are simply the exhibition of a Personal Will, acting through all time, with purpose deliberate and consecutive, to ends not yet discerned.

Nevertheless, when compared to Cuba, Jamaica cannot be considered the preponderant position of the Caribbean. The military question of position is quant.i.tative as well as qualitative; and situation, however excellent, can rarely, by itself alone, make full amends for defect in the power and resources which are the natural property of size--of ma.s.s. Gibraltar, the synonym of intrinsic strength, is an ill.u.s.tration in point; its smallness, its isolation, and its barrenness of resource const.i.tute limits to its offensive power, and even to its impregnability, which are well understood by military men.

Jamaica, by its situation, flanks the route from Cuba to the Isthmus, as indeed it does all routes from the Atlantic and the Gulf to that point; but, as a military ent.i.ty, it is completely overshadowed by the larger island, which it so conspicuously confronts. If, as has just been said, it by situation intercepts the access of Cuba to the Isthmus, it is itself cut off by its huge neighbor from secure communication with the North American Continent, now as always the chief natural source of supplies for the West Indies, which do not produce the great staples of life. With the United States friendly or neutral, in a case of war, there can be no comparison between the advantages of Cuba, conferred by its situation and its size, and those of Jamaica, which, by these qualities of its rival, is effectually cut off from that source of supplies. Nor is the disadvantage of Jamaica less marked with reference to communication with other quarters than the United States--with Halifax, with Bermuda, with Europe. Its distance from these points, and from Santa Lucia, where the resources of Europe may be said to focus for it, makes its situation one of extreme isolation; a condition emphasized by the fact that both Bermuda and Santa Lucia are themselves dependent upon outside sources for anything they may send to Jamaica. At all these points, coal, the great factor of modern naval war, must be stored and the supply maintained. They do not produce it. The mere size of Cuba, the amount of population which it has, or ought to have, the number of its seaports, the extent of the industries possible to it, tend naturally to an acc.u.mulation of resources such as great mercantile communities always entail. These, combined with its nearness to the United States, and its other advantages of situation, make Cuba a position that can have no military rival among the islands of the world, except Ireland.

With a friendly United States, isolation is impossible to Cuba.

The aim of any discussion such as this should be to narrow down, by a gradual elimination, the various factors to be considered, in order that the decisive ones, remaining, may become conspicuously visible.

The trees being thus thinned out, the features of the strategic landscape can appear. The primary processes in the present case have been carried out before seeking the attention of the reader, to whom the first approximations have been presented under three heads. First, the two decisive centres, the mouth of the Mississippi and the Isthmus. Second, the four princ.i.p.al routes, connecting these two points with others, have been specified; these routes being, 1, between the Isthmus and the Mississippi themselves; 2, from the Isthmus to the North American coast, by the Windward Pa.s.sage; 3, from the Gulf of Mexico to the North American coast, by the Strait of Florida; and, 4, from the Isthmus to Europe, by the Anegada Pa.s.sage.

Third, the princ.i.p.al military positions throughout the region in question have been laid down, and their individual and relative importance indicated.

From the subsequent discussion it seems evident that, as "communications" are so leading an element in strategy, the position or positions which decisively affect the greatest number or extent of the communications will be the most important, so far as situation goes. Of the four princ.i.p.al lines named, three pa.s.s close to, and are essentially controlled by, the islands of Cuba and Jamaica, namely, from the Mississippi to the Isthmus by the Yucatan Channel, from the Mississippi to the Atlantic coast of America by the Strait of Florida, and from the Isthmus to the Atlantic coast by the Windward Pa.s.sage.

The fourth route, which represents those from the Isthmus to Europe, pa.s.ses nearer to Jamaica than to Cuba; but those two islands exercise over it more control than does any other one of the archipelago, for the reason that any other can be avoided more easily, and by a wider interval, than either Jamaica or Cuba.

Regarded as positions, therefore, these two islands are the real rivals for control of the Caribbean and of the Gulf of Mexico; and it may be added that the strategic centre of interest for both Gulf and Caribbean is to be found in the Windward Pa.s.sage, because it furnishes the ultimate test of the relative power of the two islands to control the Caribbean. For, as has been said before, and cannot be repeated too often, it is not position only, nor chiefly, but mobile force, that is decisive in war. In the combination of these two elements rests the full statement of any case. The question of position has been adjudged in favor of Cuba, for reasons which have been given. In the case of a conflict between the powers holding the two islands, the question of controlling the Windward Pa.s.sage would be the test of relative mobile strength; because that channel is the shortest and best line of communications for Jamaica with the American coast, with Halifax, and with Bermuda, and as such it must be kept open. If the power of Jamaica is not great enough to hold the pa.s.sage open by force, she is thrown upon evasion--upon furtive measures--to maintain essential supplies; for, if she cannot a.s.sert her strength so far in that direction, she cannot, from her nearness, go beyond Cuba's reach in any direction. Abandonment of the best road in this case means isolation; and to that condition, if prolonged, there is but one issue.

The final result, therefore, may be stated in this way: The advantages of situation, strength, and resources are greatly and decisively in favor of Cuba. To bring Jamaica to a condition of equality, or superiority, is needed a mobile force capable of keeping the Windward Pa.s.sage continuously open, not only for a moment, nor for any measurable time, but throughout the war. Under the present conditions of political tenure, in case of a war involving only the two states concerned, such a question could admit of no doubt; but in a war at all general, involving several naval powers, the issue would be less certain. In the war of 1778 the tenure, not of the Windward Pa.s.sage merely, but of Jamaica itself, was looked upon by a large party in Great Britain as nearly hopeless; and it is true that only a happy concurrence of blundering and bad luck on the part of its foes then saved the island. It is conceivable that odds which have happened once may happen again.

THE END.