1846 On June 30, 1846, Jackson received the brevet rank of second lieutenant of artillery. He was fortunate from the very outset of his military career. The officers of the United States army, thanks to the thorough education and Spartan discipline of West Point, were fine soldiers; but their scope was limited. On the western frontier, far beyond the confines of civilisation, stood a long line of forts, often hundreds of miles apart, garrisoned by a few troops of cavalry or companies of infantry. It is true that there was little chance of soldierly capacity rusting in these solitary posts. From the borders of Canada to the banks of the Rio Grande swarmed thousands of savage warriors, ever watchful for an opportunity to pay back with bloody interest the aggression of the whites. Murder, robbery, and massacre followed each other in rapid succession, and the troops were allowed few intervals of rest. But the warfare was inglorious—a mere series of petty incidents, the punishment of a raid, or the crushing of an isolated revolt. The scanty butcher’s bills of the so-called battles made small appeal to the popular imagination, and the deeds of the soldiers in the western wilderness, gallant as they might be, aroused less interest in the States than the conflicts of the police with the New York mob. But although pursuits which carried the adversaries half across the continent, forays which were of longer duration than a European war, and fights against overwhelming odds, where no quarter was asked or given, kept the American officers constantly employed, their training was hardly sufficient for the needs of a great campaign. In the running fights against Apache or Blackfoot the rules of strategy and tactics were of small account. The soldier was constrained to acknowledge the brave and the trapper as his teachers; and Moltke himself, with all his lore, would have been utterly baffled by the cunning of the Indian. Before the war of 1845–6 the strength of the regular army was not more than 8,500 men; and the whole of this force, with the exception of a few batteries, was scattered in small detachments along the frontier. The troops were never brought together in considerable bodies; and although they were well drilled and under the strictest discipline, neither the commanders nor the staff had the least experience of handling men in masses. Many of the infantry officers had never drilled with a whole battalion since they left West Point. A brigade of cavalry—that is, two or three regiments working together as a single unit—had never been assembled; and scarcely a single general had ever commanded a force composed of the three arms, either on service or on parade. “During my twenty years of service on the frontier,” said one of the most famous of the Confederate leaders,[[2]] “I learned all about commanding fifty United States dragoons and forgot everything else.”

Nevertheless, this life of enterprise and hard work, the constant struggle against nature, for the illimitable space of the inhospitable wilderness was a more formidable antagonist than the stealthy savage, benefited the American soldier in more ways than one. He grew accustomed to danger and privation. He learned to use his wits; to adapt his means to his end; to depend on his intelligence rather than on rule. Above all, even the most junior had experience of independent command before the enemy. A ready assumption of responsibility and a prompt initiative distinguished the regular officers from the very outset of the Civil War; and these characteristics had been acquired on the western prairies.

But the warfare of the frontier had none of the glamour of the warfare which is waged with equal arms against an equal enemy, of the conflict of nation against nation. To bring the foe to bay was a matter of the utmost difficulty. A fight at close quarters was of rare occurrence, and the most successful campaign ended in the destruction of a cluster of dirty wigwams, or the surrender of a handful of starving savages. In such unsatisfactory service Jackson was not called upon to take a part. It is doubtful if he ever crossed the Mississippi. His first experience of campaigning was to be on a field where gleams of glory were not wanting. The ink on his commission was scarcely dry when the artillery subaltern was ordered to join his regiment, the First Artillery, in Mexico. The war with the Southern Republic had blazed out on the Texan border in 1845, and the American Government had now decided to carry it into the heart of the hostile territory. With the cause of quarrel we have no concern. General Grant has condemned the war as “one of the most unjust ever waged by a stronger against a weaker nation.”[[3]] Be this as it may, it is doubtful whether any of Grant’s brother officers troubled themselves at all with the equity of invasion. It was enough for them that the expedition meant a struggle with a numerous enemy, armed and organised on the European model, and with much experience of war; that it promised a campaign in a country which was the very region of romance, possessing a lovely climate, historic cities, and magnificent scenery. The genius of Prescott had just disentombed from dusty archives the marvellous story of the Spanish conquest, and the imagination of many a youthful soldier had been already kindled by his glowing pages. To follow the path of Cortez, to traverse the golden realms of Montezuma, to look upon the lakes and palaces of Mexico, the most ancient city of America, to encamp among the temples of a vanished race, and to hear, while the fireflies flitted through the perfumed night, the music of the black-eyed maidens of New Spain—was ever more fascinating prospect offered to a subaltern of two-and-twenty?

The companies of the First Artillery which had been detailed for foreign service were first transferred to Point Isabel, at the mouth of the Rio Grande. Several engagements had already taken place. Palo Alto, Resaca de la Palma, and Monterey were brilliant American victories, won by hard fighting over superior numbers; and a vast extent of territory had been overrun. But the Mexicans were still unconquered. The provinces they had lost were but the fringe of the national domains; the heart of the Republic had not yet felt the pressure of war, and more than six hundred miles of difficult country intervened between the invaders and the capital. The American proposals for peace had been summarily rejected. A new President, General Santa Anna, had been raised to power, and under his vigorous administration the war threatened to assume a phase sufficiently embarrassing to the United States.

Jackson had been attached to a heavy battery, and his first duty was to transport guns and mortars to the forts which protected Point Isabel. The prospect of immediate employment before the enemy was small. Operations had come to a standstill. It was already apparent that a direct advance upon the capital, through the northern provinces, was an enterprise which would demand an army much larger than the Government was disposed to furnish. It seemed as if the First Artillery had come too late. Jackson was fearful that the war might come to an end before his regiment should be sent to the front. The shy cadet had a decided taste for fighting. “I envy you men,” he said to a comrade more fortunate than himself,[[4]] “who have been in battle. How I should like to be in one battle!” His longing for action was soon gratified. Mexico had no navy and a long sea-board. The fleet of the United States was strong, their maritime resources ample, and to land an army on a shorter route to the distant capital was no difficult undertaking.

General Winfield Scott, who had been sent out as commander-in-chief, was permitted, early in 1847, to organise a combined naval and military expedition for the reduction of Vera Cruz, the principal port of the Republic, whence a good road leads to Mexico. The line of advance would be thus reduced to two hundred and sixty miles; and the natural obstacles, though numerous enough, were far less serious than the deserts which barred invasion from the north.

1847 For this enterprise most of the regular regiments were withdrawn from the Rio Grande; and General Taylor, the hero of Palo Alto and Monterey, was left with a small army, composed principally of volunteers, to hold the conquered provinces. Scott’s troops assembled in the first instance at Tampico. The transports, eighty in number, having embarked their freight, were directed to rendezvous in the road stead of Lobos, one hundred and twenty miles north of Vera Cruz; and when the whole had assembled, the fleet set sail for Los Sacrificios, the island where Cortez had landed in 1520, three miles south of the city. The army of invasion, in which the First Regiment of Artillery was included, consisted of 13,000 men.

March 9 On the morning of March 9 the sun shone propitiously on the expedition. The surf-boats, each holding from seventy to eighty men, were quickly arrayed in line. Then, dashing forward simultaneously, with the strains of martial music sweeping over the smooth waters of the bay, they neared the shore. The landing was covered by seven armed vessels, and as the boats touched the beach the foremost men leaped into the water and ran up the sandy shore. In one hour General Worth’s division, numbering 4,500 men, was disembarked; and by the same precise arrangements the whole army was landed in six hours without accident or confusion. To the astonishment of the Americans the enemy offered no resistance, and the troops bivouacked in line of battle on the beach.

Little more than a mile north, across a waste of sand-hills, rose the white walls of Vera Cruz. The city was held by 4,000 men, and its armament was formidable. The troops, however, but partially organised, were incapable of operations in the open field. The garrison had not been reinforced. Santa Anna, on learning that the American army on the Rio Grande had been reduced, had acted with commendable promptitude. Collecting all the troops that were available he had marched northwards, expecting, doubtless, to overwhelm Taylor and still to be in time to prevent Scott from seizing a good harbour. But distance was against him, and his precautions were inadequate. Even if he defeated Taylor, he would have to march more than a thousand miles to encounter Scott, and Vera Cruz was ill provided for a siege. It was difficult, it is true, for the Mexican general to anticipate the point at which the Americans would disembark. An army that moves by sea possesses the advantage that its movements are completely veiled. But Vera Cruz was decidedly the most probable objective of the invaders, and, had it been made secure, the venture of the Americans would have been rendered hazardous. As it was, with Santa Anna’s army far away, the reduction of the fortress presented little difficulty. An immediate assault would in all likelihood have proved successful. Scott, however, decided on a regular siege. His army was small, and a march on the capital was in prospect. The Government grudged both men and money, and an assault would have cost more lives than could well be spared. On March 18 the trenches were completed. Four days later, sufficient heavy ordnance having been landed, the bombardment was begun.

March 27 On the 27th the town surrendered; the garrison laid down their arms, and 400 cannon, many of large calibre, fell into the hands of the Americans.