Chapter VII: Sea-Coast Defences (1)
The principal attacks which we have had to sustain, either as colonies or states, from civilized foes, have come from Canada. As colonies we were continually encountering difficulties and dangers from the French possessions. In the war of the Revolution, it being one of national emancipation, the military operations were more general throughout the several states; but in the war of 1812 the attacks were confined to the northern frontier and a few exposed points along the coast. In these two contests with Great Britain, Boston, New York, Philadelphia, Baltimore, Washington, Charleston, Savannah, Mobile, and New Orleans, being within reach of the British naval power, and offering the dazzling attraction of rich booty, have each been subjected to powerful assaults.
Similar attacks will undoubtedly be made in any future war with England. An attempt at permanent lodgment would be based either on Canada or a servile insurrection in the southern states. The former project, in a military point of view, offers the greatest advantages, but most probably the latter would also be resorted to for effecting a diversion, if nothing more. But for inflicting upon us a sudden and severe injury by the destruction of large amounts of public and private property, our seaport towns offer inducements not likely to be disregarded. This mode of warfare, barbarous though it be, will certainly attend a conflict with any great maritime power. How can we best prepare in time of peace to repel these attacks?
Immediately after the war of 1812 a joint commission of our most distinguished military and naval officers was formed, to devise a system of defensive works, to be erected in time of peace for the security of the most important and the most exposed points on our sea-coast. It may be well here to point out, in very general terms, the positions and character of these works, mentioning only such as have been completed, or are now in course of construction, and such as are intended to be built as soon as Congress shall grant the requisite funds. There are other works projected for some future period, but as they do not belong to the class required for immediate, use, they will not be referred to.
MAINE.
Beginning at the northeastern extremity of our coast, we have, for Eastport and Wiscasset, projected works estimated to carry about fifty guns. Nothing has yet been done to these works.
Next Portland, with works carrying about forty or fifty guns, and Fort Penobscot and batteries, carrying about one hundred and fifty guns. These are only partly built.
NEW HAMPSHIRE.
Defences of Portsmouth and the vicinity, about two hundred guns. These works are also only partly built.
MASSACHUSETTS.
Projected works east of Boston, carrying about sixty guns. These are not yet commenced.
Works for defence of Boston Harbor carry about five hundred guns. These are nearly three-quarters completed. Those of New Bedford harbor carry fifty guns: not yet begun.
RHODE ISLAND.
Newport harbor,--works carry about five hundred guns, nearly completed.
CONNECTICUT.
New London harbor, New Haven, and the Connecticut river. The first of these nearly completed; the two latter not yet begun.
NEW YORK.
The works projected for the defence of New York harbor are estimated to carry about one thousand guns. These works are not yet one-half constructed.
PENNSYLVANIA.
The works projected for the defence of the Delaware Bay and Philadelphia will carry about one hundred and fifty guns. They are not one-quarter built.
MARYLAND AND VIRGINIA.
Baltimore and Annapolis--these works will carry some two hundred and fifty guns. The works for the Chesapeake Bay will carry about six hundred guns; and those for the Potomac river about eighty guns. These are more than one-half completed.
NORTH CAROLINA.
The works at Beaufort and Smithville carry about one hundred and fifty guns. They are essentially completed.
SOUTH CAROLINA.
The works for the defence of Charleston carry some two hundred guns. They are one-half constructed.
GEORGIA.
The defences of Savannah carry about two hundred guns and are nearly three-quarters finished.
FLORIDA.
The works projected for the defence of St. Augustine, Key West, Tortugas, and Pensacola will carry some eight or nine hundred guns. Those at St. Augustine and Pensacola are essentially completed, but those at Key West and Tortugas are barely begun.
ALABAMA.
The works for the defence of Mobile will carry about one hundred and sixty guns. These are nearly constructed.
LOUISIANA.
The works for the defence of New Orleans will carry some two hundred and fifty or three hundred guns; they are nearly completed.
The works north of the Chesapeake cost about three thousand dollars per gun; those south of that point about six thousand dollars per gun. This difference in cost is due in part to the character of the soil on which the fortifications are built, and in part to the high prices paid in the south for materials and workmanship.
* * * * *
Having pointed out the character and condition of our system of sea-coast defences, let us briefly examine how far these works may be relied on as a means of security against a maritime descent.
To come to a proper conclusion on this subject, let us first examine the three or four great maritime descents attempted by the English during the wars of the French Revolution; a period at which the great naval superiority of England over other nations, gave her the title of _mistress of the seas_. Let us notice what have been the results of the several attempts made by this power at maritime invasions, and the means by which such attacks have been repelled.
In 1795, a maritime expedition was fitted out against Quiberon, at an expense of eight millions of dollars. This port of the French coast had then a naval defence of near thirty sail, carrying about sixteen hundred guns. Lord Bridport attacked it with fourteen sail of the line, five frigates, and some smaller vessels, about fifteen hundred guns in all, captured a portion of the fleet, and forced the remainder to take shelter under the guns of the fortifications of L'Orient. The French naval defence being destroyed, the British now entered Quiberon without opposition. This bay is said by Brenton, in his British Naval History, to be "the finest on the coast of France, or perhaps in the world, for landing an army." Besides these natural advantages in favor of the English, the inhabitants of the surrounding country were in open insurrection, ready to receive the invaders with open arms. A body of ten thousand troops were landed, and clothing, arms, &c., furnished to as many more royalist troops; but the combined forces failed in their attack upon St. Barbe, and General Hoche, from his intrenchments, with seven thousand men, held in check a body of eighteen thousand, penned up, without defences, in the narrow peninsula. Reinforced by a new debarkation, the allies again attempted to advance, but were soon defeated, and ultimately almost entirely destroyed.
In 1799, the English and Russians made a descent upon Holland with fourteen ships of the line and ten frigates, carrying about eleven hundred guns and a great number of transports, with an army of thirty-six thousand men. The Dutch naval defences consisted of eight ships of the line, three fifty-four gun ships, eight forty-eight gun ships and eight smaller frigates, carrying in all about twelve hundred guns; but this force contributed little or nothing to the defence, and was soon forced to hoist the hostile flag. The defensive army was at first only twelve thousand, but the Republicans afterwards increased it to twenty-two thousand, and finally to twenty-eight thousand men. But notwithstanding this immense naval and military superiority, and the co-operation of the Orange party in assisting the landing of their troops, the allies failed to get possession of a single strong place; and after a loss of six thousand men, were compelled to capitulate. "Such," says Alison, "was the disastrous issue of the greatest expedition which had yet sailed from the British harbors during the war."
In 1801, Nelson, with three ships of the line, two frigates, and thirty-five smaller vessels, made a desperate attack upon the harbor of Boulogne, but was repulsed with severe loss.
Passing over some unimportant attacks, we come to the descent upon the Scheldt, or as it is commonly called, the Walcheren expedition, in 1809. This expedition, though a failure, has often been referred to as proving the expediency of maritime descents. The following is a brief narrative of this expedition:--
Napoleon had projected vast fortifications, dock-yards, and naval arsenals at Flushing and Antwerp for the protection of a maritime force in the Scheldt. But no sooner was the execution of this project begun, than the English fitted out an expedition to seize upon the defences of the Scheldt, and capture or destroy the naval force. Flushing, at the mouth of the river, was but ill-secured, and Antwerp, some sixty or seventy miles further up the river, was entirely defenceless; the rampart was unarmed with cannon, dilapidated, and tottering, and its garrison consisted of only about two hundred invalids and recruits. Napoleon's regular army was employed on the Danube and in the Peninsula. The British attacking force consisted of thirty-seven ships of the line, twenty-three frigates, thirty-three sloops of war, twenty-eight gun, mortar, and bomb vessels, thirty-six smaller vessels, eighty-two gunboats, innumerable transports, with over forty thousand troops, and an immense artillery train; making in all, says the English historian, "an hundred thousand combatants." A landing was made upon the island of Walcheren, and siege laid to Flushing, which place was not reduced till eighteen days after the landing; the attack upon the water was made by seven or eight ships of the line, and a large flotilla of bomb vessels, but produced no effect. The channel at the mouth of the river was too broad to be defended by the works of Flushing, and the main portion of the fleet passed out of reach of the guns, and ascended the Scheldt part way up to Antwerp. But in the mean time, the fortifications of that place had been repaired, and, after a fruitless operation of a whole month in the river, the English were gradually forced to retreat to Walcheren, and finally to evacuate their entire conquest.
The cost of the expedition was immense, both in treasure and in life. It was certainly very poorly managed. But we cannot help noticing the superior value of fortifications as a defence against such descents. They did much to retard the operations of the enemy till a defensive army could be raised. The works of Flushing were never intended to close up the Scheldt, and of course could not intercept the passage of shipping; but they were not reduced by the English naval force, as has sometimes been alleged. Col. Mitchel, of the English service, says that the fleet "kept up so tremendous a fire upon the batteries, that the French officers who had been present at Austerlitz and Jena declared that the cannonade in these battles had been a mere _jeu d'enfans_ in comparison. Yet what was the effect produced on the defences of the place by this fire, so formidable, to judge by the sound alone? The writer can answer the question with some accuracy, for he went along the entire sea-line the very day after the capitulation, and found no part of the parapet injured so as to be of the slightest consequence, and only one solitary gun dismounted, evidently by the bursting of a shell, and which could not, of course, have been thrown from the line of battle ships, but must have been thrown from the land batteries."[16]
[Footnote 16: The batteries constructed in the siege of this place were armed with fifty-two heavy guns and mortars.]
But it may be said that although great naval descents on a hostile coast are almost always unsuccessful, nevertheless a direct naval attack upon a single fortified position will be attended with more favorable results; and that our seaport towns, however fortified, will be exposed to bombardment and destruction by the enemy's fleets. In other words, that in a direct contest between ships and forts the former will have at least an equal chance of success.
Let us suppose a fair trial of this relative strength. The fort is to be properly constructed and in good repair; its guns in a position to be used with effect; its garrison skilful and efficient; its commander capable and brave. The ship is of the very best character, and in perfect order; the crew disciplined and courageous; its commander skilful and adroit; the wind, and tide, and sea--all as could be desired.[17] The numbers of the garrison and crew are to be no more than requisite, with no unnecessary exposure of human life to swell the lists of the slain. The issue of this contest, unless attended with extraordinary and easily distinguishable circumstances, would be a fair test of their relative strength.
[Footnote 17: These conditions for a battery are easily satisfied, but for the ship, are partly dependent on the elements, and seldom to be wholly attained.]
What result should we anticipate from the nature of the contending forces? The ship, under the circumstances we have supposed, can choose her point of attack, selecting the one she may deem the most vulnerable; but she herself is everywhere vulnerable; her men and guns are much concentrated, and consequently much exposed. But in the fort the guns and men are more distributed, a fort with an interior area of several acres not having a garrison as large as the crew of a seventy-four-gun ship. All parts of the vessel are liable to injury; while the fort offers but a small mark,--the opening of the embrasures, a small part of the carriage, and now and then a head or arm raised above the parapet,--the ratio of exposed surfaces being not less than _twenty to one_. In the vessel the guns are fired from an oscillating deck, and the balls go at random; in the fort the guns are fired from an immoveable platform, and the balls reach their object with unerring aim. There is always more or less motion in the water, so that the ship's guns, though accurately pointed at one moment, at the next will be thrown entirely away from the object, even when the motion is too slight to be otherwise noticed; whereas in the battery the guns will be fired just as they are pointed; and the motion of the vessel will merely vary to the extent of a few inches the spot in which the shot is received. In the fort the men and guns are behind impenetrable walls of stone and earth; in the vessel they are behind frail bulwarks, whose splinters are equally destructive with the shot. The fort is incombustible; while the ship may readily be set on fire by incendiary projectiles. The ship has many points exposed that may be called vital points. By losing her rudder, or portions of her rigging, or of her spars, she may become unmanageable, and unable to use her strength; she may receive shots under water, and be liable to sink; she may receive hot shot, and be set on fire: these damages are in addition to those of having her guns dismounted and her people killed by shots that pierce her sides and scatter splinters from her timbers; while the risks of the battery are confined to those mentioned above--namely, the risk that the gun, the carriage, or the men may be struck.
The opinions of military writers, and the facts of history, fully accord with these deductions of theory. Some few individuals mistaking, or misstating, the facts of a few recent trials, assert that modern improvements in the naval service have so far outstripped the progress in the art of land defence, that a floating force is now abundantly able to cope, upon equal terms, with a land battery. Ignorant and superficial persons, hearing merely that certain forts had recently yielded to a naval force, and taking no trouble to learn the real facts of the case, have paraded them before the public as proofs positive of a new era in military science. This conclusion, however groundless and absurd, has received credit merely from its novelty. Let us examine the several trials of strength which have taken place between ships and forts within the last fifty years, and see what have been the results.
In 1792 a considerable French squadron attacked Cagliari, whose fortifications were at that time so dilapidated and weak, as scarcely to deserve the name of defences. Nevertheless, the French fleet, after a bombardment of three days, was most signally defeated and obliged to retire.
In 1794 two British ships, "the Fortitude of seventy-four, and the Juno frigate of thirty-two guns," attacked a small town in the bay of Martello, Corsica, which was armed with one gun in barbette, and a garrison of thirty men. After a bombardment of two and a half hours, these ships were forced to haul off with considerable damage and loss of life. The little tower had received no injury, and its garrison were unharmed. Here were _one hundred and six guns_ afloat against _one_ on shore; and yet the latter was successful.
In 1797 Nelson attacked the little inefficient batteries of Santa Crux, in Teneriffe, with eight vessels carrying four hundred guns. But notwithstanding his great superiority in numbers, skill, and bravery, he was repelled with the loss of two hundred and fifty men, while the garrison received little or no damage. A single ball from the land battery, striking the side of one of his vessels, instantly sunk her with near a hundred seamen and marines!
In 1798, a French flotilla of fifty-two brigs and gunboats, manned with near seven thousand men, attacked a little English redoubt on the island of Marcou, which was armed with two thirty-two-pounders, two six-pounders, four four-pounders, and two carronades, and garrisoned with two hundred and fifty men. Notwithstanding this great disparity of numbers, the little redoubt sunk seven of the enemy's brigs and gunboats, captured another, and forced the remainder to retreat with great loss; while the garrison had but one man killed and three wounded.
In 1801, the French, with three frigates and six thousand men, attacked the poorly-constructed works of Porto Ferrairo, whose defensive force was a motley garrison of fifteen hundred Corsicans, Tuscans, and English. Here the attacking force was _four_ times as great as that of the garrison; nevertheless they were unsuccessful after several bombardments and a siege of five months.
In July of the same year, 1801, Admiral Saumarez, with an English fleet of six ships of the line and two smaller vessels, carrying in all five hundred and two guns, attacked the Spanish and French defences of Algesiras. Supposing the floating forces of the contending parties to be equal, gun for gun, (which is certainly a very fair estimate for the attacking force, considering the circumstances of the case,) we have a French land-battery of only twelve guns opposed by an English floating force of one hundred and ninety-six guns. Notwithstanding this inequality of nearly _seventeen_ to _one_, the little battery compelled the superior naval force to retreat with great loss.
Shortly after this, the French and Spanish fleets attacked the same English squadron with a force of nearly _three_ to _one_, but met with a most signal defeat; whereas with a land-battery of only _one_ to _seventeen_, the same party had been victorious. What proof can be more decisive of the superiority of guns on shore over those afloat!
In 1803 the English garrison of Diamond Rock, near Port Royal Bay, with only one hundred men and some fifteen guns, repelled a French squadron of two seventy-four-gun ships, a frigate, and a brig, assisted by a land attack of two hundred troops. There was not a single man killed or wounded in the redoubt, while the French lost fifty men! The place was afterwards reduced by famine.
In 1806 a French battery on Cape Licosa, of only two guns and a garrison of twenty-five men, resisted the attacks of a British eighty-gun ship and two frigates. The carriage of one of the land-guns failed on the second shot, so that, in fact, only _one_ of them was available during the action. Here was _a single piece of ordnance_ and a garrison of _twenty-five men,_ opposed to a naval force of _over one hundred and fifty guns_ and about _thirteen hundred men._ And what effects were produced by this strange combat? The attacking force lost _thirty-seven_ men killed and wounded, the eighty-gun ship was much disabled, while the fort and garrison escaped entirely unharmed! What could not be effected by force was afterwards obtained by negotiation.
In 1808 a French land-battery of only _three_ guns, near Fort Trinidad, drove off an English seventy-four-gun ship, and a bomb-vessel.
In 1813 Leghorn, whose defences were of a very mediocre character, and whose garrison at that time was exceedingly weak, was attacked by an English squadron of six ships, carrying over three hundred guns, and a land force of one thousand troops. The whole attempt was a perfect failure.
"In 1814, when the English advanced against Antwerp," says Colonel Mitchell, an English historian, "Fort Frederick, a small work of only two guns, was established in a bend of the Polder Dyke, at some distance below Lillo. The armament was a long eighteen-pounder and a five and a half inch howitzer. From this post the French determined to dislodge the English, and an eighty-gun ship dropped down with the tide and anchored near the Flanders shore, about six hundred yards from the British battery. By her position she was secured from the fire of the eighteen-pounder, and exposed to that of the howitzer only. As soon as every thing was made tight her broadside was opened; and if noise and smoke were alone sufficient to ensure success in war, as so many of the moderns seem to think, the result of this strange contest would not have been long doubtful, for the thunder of the French artillery actually made the earth to shake again; but though the earth shook, the single British howitzer was neither dismounted nor silenced; and though the artillery-men could not, perfectly exposed as they were, stand to their gun while the iron hail was striking thick and fast around, yet no sooner did the enemy's fire slacken for a moment than they sprang to their post, ready to return at least one shot for eighty. This extraordinary combat lasted from seven o'clock in the morning till near twelve at noon, when the French ship, having had forty-one men killed and wounded, her commander being in the list of the latter, and having besides sustained serious damage in her hull and rigging, returned to Antwerp without effecting any thing whatever. The howitzer was not dismounted, the fort was not injured,--there being in fact nothing to injure,--and the British had only one man killed and two wounded."
It is unnecessary to further specify examples from the wars of the French Revolution; the whole history of these wars is one continued proof of the superiority of fortifications as a maritime frontier defence. The sea-coast of France is almost within stone's throw[18] of the principal British naval depots; here were large towns and harbors, filled with the rich commerce of the world, offering the dazzling attraction of rich booty. The French navy was at this time utterly incompetent to their defence; while England supported a maritime force at an annual expense of near _ninety millions of dollars._ Her largest fleets were continually cruising within sight of these seaports, and not unfrequently attempting to cut out their shipping. "At this period," says one of her naval historians, "the naval force of Britain, so multiplied and so expert from long practice, had acquired an intimate knowledge of their (the French) harbors, their bays and creeks; her officers knew the depth of water, and the resistance likely to be met with in every situation." On the other hand, these harbors and towns were frequently stripped of their garrisons by the necessities of distant wars, being left with no other defence than their fortifications and militia. And yet, notwithstanding all this, they escaped unharmed during the entire contest. They were frequently attacked, and in some instances the most desperate efforts were made to effect a permanent lodgment; but in no case was the success at all commensurate with the expense of life and treasure sacrificed, and no permanent hold was made on either the maritime frontiers of France or her allies. This certainly was owing to no inferiority of skill and bravery on the part of the British navy, as the battles of Aboukir and Trafalgar, and the almost total annihilation of the French marine, have but too plainly proven. Why then did these places, escape? We know of no other reason, than that _they were fortified_; and that the French knew how to defend their fortifications. The British maritime expeditions to Quiberon, Holland, Boulogne, the Scheldt, Constantinople, Buenos Ayres, &c., sufficiently prove the ill-success, and the waste of life and treasure with which they must always be attended. But when her naval power was applied to the destruction of the enemy's marine, and in transporting her land forces to solid bases of operations on the soil of her allies, in Portugal and Belgium, the fall of Napoleon crowned the glory of their achievements.
[Footnote 18: Only eighteen and a half miles across the Channel at the narrowest place.]
Let us now examine the several British naval attacks on our own forts, in the wars of the Revolution and of 1812.
In 1776 Sir Peter Parker, with a British fleet of nine vessels, carrying about two hundred and seventy[19] guns, attacked Fort Moultrie, in Charleston harbor, which was then armed with only twenty-six guns, and garrisoned by only three hundred and seventy-five regulars and a few militia. In this contest the British were entirely defeated, and lost, in killed and wounded, two hundred and five men, while their whole two hundred and seventy guns killed and wounded only thirty-two men in the fort. Of this trial of strength, which was certainly a fair one, Cooper in his Naval History, says:--"It goes fully to prove the important military position that ships cannot withstand forts, when the latter are properly armed, constructed, and garrisoned. General Moultrie says only thirty rounds from the battery were fired, and was of opinion that the want of powder alone prevented the Americans from destroying the men-of-war."
[Footnote 19: These vessels _rated_ two hundred and fifty-four guns, but the number actually carried is stated to have been two hundred and seventy.]
In 1814 a British fleet of four vessels, carrying ninety-two guns, attacked Fort Boyer, a small redoubt, located on a point of land commanding the passage from the Gulf into the bay of Mobile. This redoubt was garrisoned by only one hundred and twenty combatants, officers included; and its armament was but twenty small pieces of cannon, some of which were almost entirely useless, and most of them poorly mounted "in batteries hastily thrown up, and leaving the gunners uncovered from the knee upward," while the enemy's land force, acting in concert with the ships, consisted of twenty artillerists with a battery of two guns, and seven hundred and thirty marines, Indians, and negroes. His ships carried five hundred and ninety men in all. This immense disparity of numbers and strength did not allow to the British military and naval commanders the slightest apprehension "that four British ships, carrying ninety-two guns, and a land force somewhat exceeding seven hundred combatants, could fail in reducing a small work mounting only twenty short carronades, and defended by a little more than a hundred men, unprovided alike with furnaces for heating shot, or casements to cover themselves from rockets and shells." Nevertheless, the enemy was completely repulsed; one of his largest ships was entirely destroyed, and 85 men were killed and wounded on board the other; while our loss was only eight or nine. Here a naval force of _five_ to _one_ was repelled by the land-battery.
Again, in 1814, a barbette battery of one four-pounder and two eighteen-pounder guns at Stonington, repelled a British fleet of one hundred and thirty-four guns. During the engagement the Americans exhausted their ammunition, and spiked their eighteen-pounders, and only one of them was afterwards used. Two of the enemy's ships, carrying one hundred and twelve guns, were engaged during the whole time of attack, and during much of this time bombarded the town from a position beyond reach of the land-battery. They were entirely too far off for the four-pounder gun to be of any use. Supposing the two eighteen-pounders to have been employed during the whole action, and also all the guns of the fleet, _one_ eighteen-pounder on land must have been more than equivalent to _sixty-seven_ guns afloat, for the ships were so much injured as to render it necessary for them to withdraw. The British loss was twenty killed, and more than fifty wounded. Ours was only two killed and six wounded.[20]
[Footnote 20: Perkins says two killed and six wounded. Holmes says six wounded, but makes no mention of any killed.]
The fleet sent to the attack of Baltimore, in 1814, consisted of forty sail, the largest of which were ships of the line, carrying an army of over six thousand combatants. The troops were landed at North Point, while sixteen of the bomb-vessels and frigates approached within reach of Fort McHenry, and commenced a bombardment which lasted twenty-five hours. During this attack, the enemy threw "fifteen hundred shells, four hundred of which exploded within the walls of the fort, but without making any impression on either the strength of the work or the garrison," and the British were compelled to retire with much loss.
In 1815, a squadron of British ships, stationed off the mouths of the Mississippi, for the purpose of a blockade, ascended the river as high as Fort St. Philip, which is a small work capable of an armament of only twenty guns in all. A heavy fire of shot and shells was continued with but few and short pauses for nine days and nights, but making no impression either on the fort or garrison, they retreated to their former position at the mouth of the river.
There is but a single instance in the war of 1812, where the enemy's vessels succeeded in reducing a fort; and this has sometimes been alluded to, by persons ignorant of the real facts of the case, as a proof against the ability of our fortifications to resist naval attacks. Even if it were a case of decided failure, would this single exception be sufficient to overthrow the weight of evidence on the other side? We allude to the reduction of the so-called Fort Washington by the British fleet that ascended the Potomac in 1814, to assist in the disgraceful and barbarous operation of burning the capitol and destroying the archives of the nation. Fort Washington was a very small and inefficient work, incorrectly planned by an incompetent French engineer; only a small part of the fort was then built, and it has not yet been completed. The portion constructed was never, until very recently, properly prepared for receiving its armament, and at the time of attack could not possibly have held out a long time. But no defence whatever was made. Capt. Gordon, with a squadron of eight sail, carrying one hundred and seventy-three guns, under orders "to ascend the river as high as Fort Washington, and try upon it the experiment of a bombardment," approached that fort, and, upon firing a single shell, which did no injury to either the fort or the garrison, the latter deserted the works, and rapidly retreated. The commanding officer was immediately dismissed for his cowardice. An English naval officer, who was one of the expedition, in speaking of the retreat of the garrison, says: "We were at loss to account for such an extraordinary step. The position was good and the capture would have cost us at least fifty men, and more, had it been properly defended; besides, an unfavorable wind and many other chances were in their favor," &c. The fleet ascended the river to Alexandria, but learning soon afterwards that batteries were preparing at White House and Indian Head to cut off its retreat, it retired, in much haste, but not without injury.
Some have also pretended to find in modern European history a few examples contradictory of the relative power which we have here assigned to ships and forts. Overlooking the numerous and well-authenticated examples, where forts of small dimensions and of small armament have repelled large fleets, they would draw their conclusions from the four or five instances where fleets have gained (as was at first supposed) a somewhat doubtful victory over forts. But a careful and critical examination of the facts in these cases, will show that even these are no exceptions to the general rule of the superiority of guns ashore over guns afloat.
The only instances where it has ever been pretended by writers of any note, that ships have gained advantage, are those of the attack on Copenhagen in 1801; the passage of the Dardanelles, in 1807; the attack on Algiers, in 1816; the attack on San Juan d'Ulloa, in 1838; and the attack on St. Jean d'Acre, in 1840.
Let us examine these examples a little in detail:--
_Copenhagen_.--The British fleet sent to attack Copenhagen, in 1801, consisted of fifty-two sail, eighteen of them being line-of-battle ships, four frigates, &c. They sailed from Yarmouth roads on the 12th of March, passed the Sound on the 30th, and attacked and defeated the Danish line on the 2d of April.
The Sound between Cronenberg and the Swedish coast is about two and a half miles wide, (vide Fig. 34.) The batteries of Cronenberg and Elsinore were lined with one hundred pieces of cannon and mortars; but the Swedish battery had been much neglected, and then mounted only six guns. Nevertheless, the British admiral, to avoid the damage his squadron would have to sustain in the passage of this wide channel, defended by a force scarcely superior to a single one of his ships, preferred to attempt the difficult passage of the Belt; but after a few of his light vessels, acting as scouts, had run on rocks, he returned to the Sound.
He then tried to negotiate a peaceful passage, threatening, however, a declaration of war if his vessels should be fired upon. It must be remembered that at this time England was at peace with both Denmark and Sweden, and that no just cause of war existed. Hence, the admiral inferred that the commanders of these batteries would be loath to involve their countries in a war with so formidable a power as England, by commencing hostilities, when only a free passage was asked. The Danish commander replied, that he should not permit a fleet to pass his post, whose object and destination were unknown to him. He fired upon them, as he was bound to do by long-existing commercial regulations, and not as an act of hostility against the English. The Swedes, on the contrary, remained neutral, and allowed the British vessels to lie near by for several days without firing upon them. Seeing this friendly disposition of the Swedes, the fleet neared their coast, and passed out of the reach of the Danish batteries, which opened a fire of balls and shells; but all of them fell more than two hundred yards short of the fleet, which escaped without the loss of a single man.
The Swedes excused their treachery by the plea that it would have been impossible to construct batteries at that season, and that, even had it been possible, Denmark would not have consented to their doing so, for fear that Sweden would renew her old claim to one half of the rich duties levied by Denmark on all ships passing the strait. There may have been some grounds for the last excuse; but the true reason for their conduct was the fear of getting involved in a war with England. Napoleon says that, even at that season, a few days would have been sufficient for placing a hundred guns in battery, and that Sweden had much more time than was requisite. And with a hundred guns on each side of the channel, served with skill and energy, the fleet must necessarily have sustained so much damage as to render it unfit to attack Copenhagen.
On this passage, we remark:--
1st. The whole number of guns and mortars in the forts of the Sound amounted to only one hundred and six, while the fleet carried over seventeen hundred guns; and yet, with this immense superiority of more than _sixteen_ to _one_, the British admiral preferred the dangerous passage of the Belt to encountering the fire of these land-batteries.
2d. By negotiations, and threatening the vengeance of England, he persuaded the small Swedish battery to remain silent and allow the fleet to pass near that shore, out of reach of Cronenberg and Elsinore.
3d. It is the opinion of Napoleon and the best English writers, that if the Swedish battery had been put in order, and acted in concert with the Danish works, they might have so damaged the fleet as to render it incapable of any serious attempt on Copenhagen.
We now proceed to consider the circumstances attending the attack and defence of Copenhagen itself. The only side of the town exposed to the attack of heavy shipping is the northern, where there lies a shoal extending out a considerable distance, leaving only a very narrow approach to the heart of the city, (Fig. 35) On the most advanced part of this shoal are the Crown-batteries, carrying in all eighty-eight guns.[21] The entrance into the Baltic between Copenhagen and Salthorn, is divided into two channels by a bank, called the Middle Ground, which is situated directly opposite Copenhagen. To defend the entrance on the left of the Crown-batteries, they placed near the mouth of the channel four ships of the line, one frigate, and two sloops, carrying in all three hundred and fifty-eight guns. To secure the port and city from bombardment from the King's Channel, (that between the Middle Ground and town,) a line of floating defences were moored near the edge of the shoal, and manned principally by volunteers. This line consisted of old hulls of vessels, block-ships, prames, rafts, &c., carrying in all six hundred and twenty-eight guns--a force strong enough to prevent the approach of bomb-vessels and gunboats, (the purpose for which it was intended,) but utterly incapable of contending with first-rate ships of war; but these the Danes thought would be deterred from approaching by the difficulties of navigation. These difficulties were certainly very great; and Nelson said, beforehand, that "the wind which might carry him in would most probably not bring out a crippled ship." Had the Danes supposed it possible for Nelson to approach with his large vessels, the line of floating defences would have been formed nearer Copenhagen, the right supported by batteries raised on the isle of Amack. "In that case," says Napoleon, "it is probable that Nelson would have failed in his attack; for it would have been impossible for him to pass between the line and shore thus lined with cannon." As it was, the line was too extended for strength, and its right too far advanced to receive assistance from the battery of Amack. A part of the fleet remained as a reserve, under Admiral Parker, while the others, under Nelson, advanced to the King's Channel. This attacking force consisted of eight ships of the line and thirty-six smaller vessels, carrying in all eleven hundred guns, (without including those in the six gun-brigs, whose armament is not given.) One of the seventy-four-gun ships could not be brought into action, and two others grounded; but, Lord Nelson says, "although not in the situation assigned them, yet they were so placed as to be of great service." This force was concentrated upon _a part_ of the Danish line of floating defences, the whole of which was not only inferior to it by three hundred and eighty-two guns, but so situated as to be beyond the reach of succor, and without a chance of escape. The result was what might have been expected. Every vessel of the right and centre of this outer Danish line was taken or destroyed, except one or two small ones, which cut and run under protection of the fortifications. The left of the line, being supported by the Crown-battery, remained unbroken. A division of frigates, in hopes of providing an adequate substitute for the ships intended to attack the batteries, ventured to engage them, but "it suffered considerable loss, and, in spite of all its efforts, was obliged to relinquish this enterprise, and sheer off."
[Footnote 21: Some writers say only sixty-eight or seventy; but the English writers generally say eighty-eight. A few, (apparently to increase the brilliancy of the victory,) make this number still greater.]
The Danish vessels lying in the entrance of the channel which leads to the city, were not attacked, and took no material part in the contest. They are to be reckoned in the defence on the same grounds that the British ships of the reserve should be included in the attacking force. Nor was any use made of the guns on shore, for the enemy did not advance far enough to be within their range.
The Crown-battery was _behind_ the Danish line, and mainly masked by it. A part only of its guns could be used in support of the left of this line, and in repelling the direct attacks of the frigates, which it did most effectually. But we now come to a new feature in this battle. As the Danish line of floating defences fell into the hands of the English, the range of the Crown-battery enlarged, and its power was felt. Nelson saw the danger to which his fleet was exposed, and, being at last convinced of the prudence of the admiral's signal for retreat, "made up his mind to weigh anchor and retire from the engagement." To retreat, however, from his present position, was exceedingly difficult and dangerous. He therefore determined to endeavor to effect an armistice, and dispatched the following letter to the prince-regent:
"Lord Nelson has directions to spare Denmark when no longer resisting; but if the firing is continued on the part of Denmark, Lord Nelson must be obliged to set on fire all the floating batteries he has taken, without the power to save the brave Danes who have defended them."
This produced an armistice, and hostilities had hardly ceased, when three of the English ships, including that in which Nelson himself was, struck upon the bank. "They were in the jaws of destruction, and would never have escaped if the batteries had continued their fire. They therefore owed their safety to this armistice." A convention was soon signed, by which every thing was left _in statu quo_, and the fleet of Admiral Parker allowed to proceed into the Baltic. Edward Baines, the able English historian of the wars of the French Revolution, in speaking of Nelson's request for an armistice, says: "This letter, which exhibited a happy union of policy and courage, was written at a moment when Lord Nelson perceived that, in consequence of the unfavorable state of the wind, the admiral was not likely to get up to aid the enterprise; that _the principal batteries_ of the enemy, and the ships at the mouth of the harbor, _were yet untouched;_ that two of his own division had grounded, and others were likely to share the same fate." Campbell says these batteries and ships "_were still unconquered._ Two of his [Nelson's] own vessels were grounded and exposed to a heavy fire; others, if the battle continued, might be exposed to a similar fate, while he found it would be scarcely practicable to bring off the prizes under the fire of the batteries."
With respect to the fortifications of the town, a chronicler of the times says they were of no service while the action lasted. "They began to fire when the enemy took possession of the abandoned ships, but it was at the same time the parley appeared." The Danish commander, speaking of the general contest between the two lines, says: "The Crown-battery did not come at all into action." An English writer says distinctly: "The works (fortifications) of Copenhagen were absolutely untouched at the close of the action." Colonel Mitchel, the English historian, says: "Lord Nelson never fired a shot at the town or fortifications of Copenhagen; he destroyed a line of block-ships, prames, and floating batteries that defended the sea approach to the town; and the Crown Prince, seeing his capital exposed, was willing to finish by armistice a war, the object of which was neither very popular nor well understood. What the result of the action between Copenhagen and the British fleet might ultimately have been, is therefore altogether uncertain. THE BOMBARDMENT OF COPENHAGEN BY NELSON, as it is generally styled, is therefore, like most other oracular phrases of the day, a mere combination of words, without the slightest meaning."
The British lost in killed and wounded nine hundred and forty-three men; and the loss of the Danes, according to their own account, which is confirmed by the French, was but very little higher. The English, however, say it amounted to sixteen or eighteen hundred; but let the loss be what it may, it was almost exclusively confined to the floating defences, and can in no way determine the relative accuracy of aim of the guns ashore and guns afloat.
The facts and testimony we have adduced, prove incontestably--
1st. That of the fleet of fifty-two sail and seventeen hundred guns sent by the English to the attack upon Copenhagen, two ships carrying one hundred and forty-eight guns were grounded or wrecked; seven ships of the line, and thirty-six smaller vessels, carrying over one thousand guns, were actually brought into the action; while the remainder were held as a reserve to act upon the first favorable opportunity.
2d. That the Danish line of floating defences, consisting mostly of hulls, sloops, rafts, &c., carried only six hundred and twenty-eight guns of all descriptions; that the fixed batteries supporting this line did not carry over eighty or ninety guns at most; and that both these land and floating batteries were mostly manned and the guns served by _volunteers_.
3d. That the fixed batteries in the system of defence were either so completely masked, or so far distant, as to be useless during the contest between the fleet and floating force.
4th. That the few guns of these batteries which were rendered available by the position of the floating defences, repelled, with little or no loss to themselves, and some injury to the enemy, a vastly superior force of frigates which attacked them.
5th. That the line of floating defences was conquered and mostly destroyed, while the fixed batteries were uninjured.
6th. That the fortifications of the city and of Amack island were not attacked, and had no part in the contest.
7th. That, as soon as the Crown-batteries were unmasked and began to act, Nelson prepared to retreat, but, on account of the difficulty of doing so, he opened a parley, threatening, with a cruelty unworthy of the most barbarous ages, that, _unless the batteries ceased their fire upon his ships, he would burn all the floating defences with the Danish prisoners in his possession;_ and that this armistice was concluded just in time to save his own ships from destruction.
8th. That, consequently, the battle of Copenhagen cannot be regarded as a contest between ships and forts, or a triumph of ships over forts: that, so far as the guns on shore were engaged, they showed a vast superiority over those afloat--a superiority known and confessed by the English themselves.
_Constantinople_.--The channel of the Dardanelles is about twelve leagues long, three miles wide at its entrance, and about three-quarters of a mile at its narrowest point. Its principal defences are the outer and inner castles of Europe and Asia, and the castles of Sestos and Abydos. Constantinople stands about one hundred miles from its entrance into the Sea of Marmora, and at nearly the opposite extremity of this sea. The defences of the channel had been allowed to go to decay; but few guns were mounted, and the forts were but partially garrisoned. In Constantinople not a gun was mounted, and no preparations for defence were made; indeed, previous to the approach of the fleet, the Turks had not determined whether to side with the English or the French, and even then the French ambassador had the greatest difficulty in persuading them to resist the demands of Duckforth.
The British fleet consisted of six sail of the line, two frigates, two sloops, and several bomb-vessels, carrying eight hundred and eighteen guns, (besides those in the bomb-ships.) Admiral Duckforth sailed through the Dardanelles on the 19th of February, 1807, with little or no opposition. This being a Turkish festival day, the soldiers of the scanty garrison were enjoying the festivities of the occasion, and none were left to serve the few guns of the forts which had been prepared for defence. But while the admiral was waiting on the Sea of Marmora for the result of negotiations, or for a favorable wind to make the attack upon Constantinople, the fortifications of this city were put in order, and the Turks actively employed, under French engineers and artillery officers, in repairing the defences of the Straits. Campbell, in his Naval History, says:--"Admiral Duckforth now fully perceived the critical situation in which he was placed. He might, indeed, succeed, should the weather become favorable, in bombarding Constantinople; _but unless the bombardment should prove completely successful in forcing the Turks to pacific terms, the injury he might do to the city would not compensate for the damage which his fleet must necessarily sustain. With this damaged and crippled fleet, he must repass the Dardanelles, now rendered infinitely stronger than they were when he came through them_."
Under these circumstances the admiral determined to retreat; and on the 3d of April escaped through the Dardanelles, steering midway of the channel, with a favorable and strong current. "This escape, however," says Baines, "was only from destruction, but by no means from serious loss and injury. * * * * In what instance in the whole course of our naval warfare, have ships received equal damage in so short a time as in this extraordinary enterprise?" In detailing the extent of this damage, we will take the ships in the order they descended. The first had her wheel carried away, and her hull much damaged, but escaped with the loss of only three men. A stone shot penetrated the second, between the poop and quarter deck, badly injured the mizzen-mast, carried away the wheel, and did other serious damage, killing and wounding twenty men. Two shot struck the third, carrying away her shrouds and injuring her masts; loss in killed and wounded, thirty. The fourth had her mainmast destroyed, with a loss of sixteen. The fifth had a large shot, six feet eight inches in circumference, enter her lower deck; loss fifty-five. The sixth, not injured. The seventh, a good deal damaged, with a loss of seventeen. The eighth had no loss. The ninth was so much injured that, "had there been a necessity for hauling the wind on the opposite tack, she must have gone down:" her loss was eight. The tenth lost twelve. The eleventh was much injured, with a loss of eight--making a total loss in repassing the Dardanelles, of one hundred and sixty-seven; and in the whole expedition two hundred and eighty-one, exclusive of two hundred and fifty men who perished in the burning of the Ajax.
Such was the effect produced on the British fleet, sailing with a favorable wind and strong current past the half-armed and half-manned forts of the Dardanelles. Duckforth himself says, that "had he remained before Constantinople much longer--till the forts had been completely put in order--no return would have been open to him, and the unavoidable sacrifice of the squadron must have been the consequence." Scarcely had the fleet cleared the Straits, before it (the fleet) was reinforced with eight sail of the line; but, even with this vast increase of strength, the English did not venture to renew the contest. They had effected a most fortunate escape. General Jomini says that if the defence had been conducted by a more enterprising and experienced people, the expedition would have cost the English their whole squadron.
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Elements of Military Art and ScienceChapter VII: Sea-Coast Defences (1)
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