The myth and legend of the Alamo is the creation story of Texas, central to the Texas legend itself, and it is a legend which continues growing, capturing the imagination of people around the world.
The entire siege lasted 13 days. Tuesday February 23 - Sunday March 6, 1836. The siege and final battle of the Alamo in 1836 constitute the most celebrated military engagement in Texas history. The battle was conspicuous for the large number of illustrious personalities among its combatants. These included Tennessee congressman David Crockett, entrepreneur-adventurer James Bowie, and Mexican president Antonio López de Santa Anna. Although not nationally famous at the time, William Barret Travis achieved lasting distinction as commander at the Alamo. For many Americans and most Texans, the battle has become a symbol of patriotic sacrifice. Traditional popular depictions, including novels, stage plays, and motion pictures, emphasize legendary aspects that often obscure the historical event.
To understand the real battle, one must appreciate its strategic context in the Texas Revolution. In December 1835 a Federalist army of Texan (or Texian, as they were called) immigrants, American volunteers, and their Tejano allies had captured the town from a Centralist force during the siege of Bexar. With that victory, a majority of the Texan volunteers of the "Army of the People" left service and returned to their families. Nevertheless, many officials of the provisional government feared the Centralists would mount a spring offensive. Two main roads led into Texas from the Mexican interior. The first was the Atascosito Road, which stretched from Matamoros on the Rio Grande northward through San Patricio, Goliad, Victoria, and finally into the heart of Austin's colony. The second was the Old San Antonio Road, a camino real that crossed the Rio Grande at Paso de Francia (the San Antonio Crossing) and wound northeastward through San Antonio de Béxar, Bastrop, Nacogdoches, San Augustine, and across the Sabine River into Louisiana. Two forts blocked these approaches into Texas: Presidio La Bahía (Nuestra Señora de Loreto Presidio) at Goliad and the Alamo at San Antonio. Each installation functioned as a frontier picket guard, ready to alert the Texas settlements of an enemy advance. James Clinton Neill received command of the Bexar garrison. Some ninety miles to the southeast, James Walker Fannin, Jr., subsequently took command at Goliad. Most Texan settlers had returned to the comforts of home and hearth. Consequently, newly arrived American volunteers-some of whom counted their time in Texas by the week-constituted a majority of the troops at Goliad and Bexar. Both Neill and Fannin determined to stall the Centralists on the frontier. Still, they labored under no delusions. Without speedy reinforcements, neither the Alamo nor Presidio La Bahía could long withstand a siege.
Bexar had twenty-one artillery pieces of various caliber. Because of his artillery experience and his regular army commission, Neill was a logical choice to command. Throughout January he did his best to fortify the mission fort on the outskirts of town. Maj. Green B. Jameson, chief engineer at the Alamo, installed most of the cannons on the walls. Jameson boasted to Gen. Sam Houston that if the Centralists stormed the Alamo, the defenders could "whip 10 to 1 with our artillery." Such predictions proved excessively optimistic. Far from the bulk of Texas settlements, the Bexar garrison suffered from a lack of even basic provender. On January 14 Neill wrote Houston that his people were in a "torpid, defenseless condition." That day he dispatched a grim message to the provisional government: "Unless we are reinforced and victualled, we must become an easy prey to the enemy, in case of an attack."
By January 17, Houston had begun to question the wisdom of maintaining Neill' s garrison at Bexar. On that date he informed Governor Henry Smith that Col. James Bowie and a company of volunteers had left for San Antonio. Many have cited this letter as proof that Houston ordered the Alamo abandoned. Yet, Houston's words reveal the truth of the matter:
"I have ordered the fortifications in the town of Bexar to be demolished, and, if you should think well of it, I will remove all the cannon and other munitions of war to Gonzales and Copano, blow up the Alamo and abandon the place, as it will be impossible to keep up the Station with volunteers, the sooner I can be authorized the better it will be for the country."
Houston may have wanted to raze the Alamo, but he was clearly requesting Smith's consent. Smith did not "think well of it" and refused to authorize Houston' s proposal.
On January 19, Bowie rode into the Alamo compound, and what he saw impressed him. As a result of much hard work, the mission had begun to look like a fort. Neill, who understood the consequences of leaving the camino real unguarded, convinced Bowie that the Alamo was the only post between the enemy and Anglo settlements. Neill's arguments and his leadership electrified Bowie. "I cannot eulogize the conduct and character of Col. Neill too highly," he wrote Smith; "no other man in the army could have kept men at this post, under the neglect they have experienced." On February 2 Bowie wrote Smith that he and Neill had resolved to "die in these ditches" before they would surrender the post. The letter confirmed Smith's understanding of controlling factors. He had concluded that Bexar must not go undefended. Rejecting Houston's advice, Smith prepared to funnel additional troops and provisions to San Antonio. In brief, Houston had asked for permission to abandon the post. Smith considered his request. He answered, "No."
Colonel Neill had complained that "for want of horses," he could not even "send out a small spy company." If the Alamo were to function as an early-warning station, Neill had to have outriders. Now fully committed to bolstering the Bexar garrison, Smith directed Lt. Col. William B. Travis to take his "Legion of Cavalry" and report to Neill. Only thirty horsemen responded to the summons. Travis pleaded with Governor Smith to reconsider: "I am unwilling to risk my reputation (which is ever dear to a soldier) by going off into the enemy' s country with such little means, and with them so badly equipped." Travis threatened to resign his commission, but Smith ignored these histrionics. At length, Travis obeyed orders and dutifully made his way toward Bexar with his thirty troopers. Reinforcements began to trickle into Bexar. On February 3, Travis and his cavalry contingent reached the Alamo. The twenty six year old cavalry officer traveled to his new duty station under duress. Yet, like Bowie, he soon became committed to Neill and the fort, which he began to describe as the "key to Texas." About February 8, David Crockett arrived with a group of American volunteers.
On February 14 Neill departed on furlough. He learned that illness had struck his family and that they desperately needed him back in Bastrop. While on leave, Neill labored to raise funds for his Bexar garrison. He promised that he would resume command when circumstances permitted, certainly within twenty days, and left Travis in charge as acting post commander. Neill had not intended to slight the older and more experienced Bowie, but Travis, like Neill, held a regular army commission. For all of his notoriety, Bowie was still just a volunteer colonel. The Alamo's volunteers, accustomed to electing their officers, resented having this regular officer foisted upon them. Neill had been in command since January; his maturity, judgment, and proven ability had won the respect of both regulars and volunteers. Travis, however, was unknown. The volunteers insisted on an election, and their acting commander complied with their wishes. The garrison cast its votes along party lines: the regulars voted for Travis, the volunteers for Bowie. In a letter to Smith, Travis claimed that the election and Bowie's subsequent conduct had placed him in an "awkward situation." The night following the balloting, Bowie dismayed Bexar residents with his besotted carousal. He tore through the town, confiscated private property and released convicted criminals from jail. Appalled by this disorderly exhibition, Travis assured the governor that he refused to assume responsibility "for the drunken irregularities of any man", not even the redoubtable Jim Bowie. Fortunately, this affront to Travis's sense of propriety did not produce a lasting breach between the two commanders. They struck a compromise: Bowie would command the volunteers, Travis the regulars. Both would co-sign all orders and correspondence until Neill's return. There was no more time for personality differences. They had learned that Santa Anna's Centralist army had reached the Rio Grande. Travis did not believe that Santa Anna could reach Bexar until March 15, but Santa Anna's arrival on February 23 convinced him otherwise. As Texans gathered in the Alamo, Travis dispatched a hastily scribbled missive to Gonzales: "The enemy in large force is in sight. We want men and provisions. Send them to us. We have 150 men and are determined to defend the garrison to the last." Travis and Bowie understood that the Alamo could not hold without additional forces. Their fate now rested with the General Council in San Felipe, Fannin at Goliad, and other Texan volunteers who might rush to assist the beleaguered Bexar garrison.
Santa Anna sent a courier to demand that the Alamo surrender. Travis replied with a cannonball. There could be no mistaking such a concise response. Centralist artillerymen set about knocking down the walls. Once the heavy pounding reduced the walls, the garrison would have to surrender in the face of overwhelming odds. Bottled up inside the fort, the Texans had only one hope, that reinforcements would break the siege.
On February 24 Travis assumed full command when Bowie fell victim to a mysterious malady variously described as "hasty consumption" or "typhoid pneumonia." As commander, Travis wrote his letter addressed to the "people of Texas & all Americans in the world," in which he recounted that the fort had "sustained a continual Bombardment and cannonade for 24 hours." He pledged that he would "never surrender or retreat" and swore "Victory or Death." The predominant message, however, was an entreaty for help: "I call on you in the name of Liberty, of patriotism and everything dear to the American character, to come to our aid, with all dispatch." On March 1, thirty-two troops attached to Lt. George C. Kimbell's Gonzales ranging company made their way through the enemy cordon and into the Alamo. Travis was grateful for any reinforcements, but knew he needed more. On March 3 he reported to the convention at Washington-on-the-Brazos that he had lost faith in Colonel Fannin. "I look to the colonies alone for aid; unless it arrives soon, I shall have to fight the enemy on his own terms." He grew increasingly bitter that his fellow Texans seemed deaf to his appeals. In a letter to a friend, Travis revealed his frustration: "If my countrymen do not rally to my relief, I am determined to perish in the defense of this place, and my bones shall reproach my country for her neglect."
On March 5, day twelve of the siege, Santa Anna announced an assault for the following day. This sudden declaration stunned his officers. The enemy's walls were crumbling. No Texan relief column had appeared. When the provisions ran out, surrender would remain the rebels' only option. There was simply no valid military justification for the costly attack on a stronghold bristling with cannons. But ignoring these reasonable objections, Santa Anna stubbornly insisted on storming the Alamo. Around 5:00 A.M. on Sunday, March 6, he hurled his columns at the battered walls from four directions. Texan gunners stood by their artillery. As about 1,800 assault troops advanced into range, canister ripped through their ranks. Staggered by the concentrated cannon and rifle fire, the Mexican soldiers halted, reformed, and drove forward. Soon they were past the defensive perimeter. Travis, among the first to die, fell on the north bastion. Abandoning the walls, defenders withdrew to the dim rooms of the Long Barracks. There some of the bloodiest hand to hand fighting occurred. Bowie, too ravaged by illness to rise from his bed, found no pity. Mexican soldiers slaughtered him with their bayonets. The chapel fell last. By dawn the Centralists had carried the works. The assault had lasted no more than ninety minutes. As many as seven defenders survived the battle, but Santa Anna ordered their summary execution. Many historians count Crockett as a member of that hapless contingent, an assertion that still provokes debate in some circles. By eight o'clock every Alamo fighting man lay dead. Currently, 189 defenders appear on the official list, but ongoing research may increase the final tally to as many as 257.
Though overlooked, a fascinating account of the Battle of the Alamo and the Texas Revolution is the personal journal of Mexican Army Officer Lt. Col. José Enrique de la Peña. De la Peña witnessed the death of William B. Travis during the fight and the capture and execution of Davy Crockett by Gen. Antonio López de Santa Anna. Below are excerpts from de la Peña's account.

The Death of William Barret Travis
"They had bolted and reinforced the doors, but in order to form trenches they had excavated some places that were now a hindrance to them. Not all of them took refuge, for some remained in the open, looking at us before firing, as if dumbfounded at our daring. Travis was seen to hesitate, but not about the death he would choose. He would take a few steps and stop, turning his proud face toward us to discharge his shots; he fought like a true soldier. Finally he died, but he died after having traded his life very dearly. None of his men died with greater heroism, and they all died. Travis behaved as a hero; one must do him justice, for with a handful of men without discipline, he resolved to face men used to war and much superior in numbers, without supplies, with scarce munitions, and against the will of his subordinates. He was a handsome blond, with a physique as robust as his spirit was strong."

The Death of Davy Crockett
"Some seven men survived the general carnage and, under the protection of General Castrillón, they were brought before Santa Anna. Among them was one of great stature, well proportioned, with regular features, in whose face there was the imprint of adversity, but in whom one also noticed a degree of resignation and nobility that did him honor. He was the naturalist David Crockett, well known in North America for his unusual adventures, who had undertaken to explore the country and who, finding himself in Béjar at the very moment of surprise, had taken refuge in the Alamo, fearing that his status as a foreigner might not be respected. Santa Anna answered Castrillón's intervention in Crockett's behalf with a gesture of indignation and, addressing himself to the sappers, the troops closest to him, ordered his execution. The commanders and officers were outraged at this action and did not support the order, hoping that once the fury of the moment had blown over these men would be spared; but several officers who were around the president and who, perhaps, had not been present during the danger, became noteworthy by an infamous deed, surpassing the solders in cruelty. They thrust themselves forward, in order to flatter their commander, and with swords in hand, fell upon these unfortunate, defenseless men just as a tiger leaps upon his prey. Though tortured before they were killed, these unfortunates died without complaining and without humiliating themselves before their torturers."
Though Santa Anna had his victory, the common soldiers paid the price as his officers had anticipated. Accounts vary, but best estimates place the number of Mexicans killed and wounded at about 600. Mexican officers led several noncombatant women, children, and slaves from the smoldering compound. Santa Anna treated surviving enemy women and children with admirable gallantry by not killing them. He pledged safe passage through his lines and provided each with a blanket and two dollars. The most famous of these survivors were Susanna W. Dickinson, widow of Capt. Almaron Dickinson, and their infant daughter, Angelina Dickinson. After the battle, Mrs. Dickinson traveled to Gonzales. There, she reported the fall of the post to General Houston. The sad intelligence precipitated a wild exodus of Texan settlers called the Runaway Scrape.
What of real military value did the defenders' heroic stand accomplish? Some movies and other works of fiction pretend that Houston used the time to raise an army. During most of the siege, however, he was at the Convention of 1836 at Washington-on-the-Brazos and not with the army. The delay did, on the other hand, allow promulgation of independence, formation of a revolutionary government, and the drafting of a constitution. If Santa Anna had struck the Texan settlements immediately, he might have disrupted the proceedings and driven all insurgents across the Sabine River. The men of the Alamo were valiant soldiers, but no evidence supports the notion, advanced in the more perfervid versions, that they "joined together in an immortal pact to give their lives that the spark of freedom might blaze into a roaring flame." Governor Smith and the General Council ordered Neill, Bowie, and Travis to hold the fort until support arrived. Despite all the "victory or death" hyperbole, they were not suicidal. Throughout the thirteen-day siege, Travis never stopped calling on the government for the promised support. The defenders of the Alamo willingly placed themselves in harm's way to protect their country. Death was a risk they accepted, but it was never their aim. Torn by internal discord, the provisional government failed to deliver on its promise to provide relief, and Travis and his command paid the cost of that dereliction. As Travis predicted, his bones did reproach the factious politicos and the parade ground patriots for their neglect. Even stripped of exaggeration, however, the battle of the Alamo remains an inspiring moment in Texas history. The sacrifice of Travis and his command animated the rest of Texas and kindled a righteous wrath that swept the Mexicans off the field at San Jacinto. Since 1836, Americans on battlefields over the globe have responded to the exhortation, "Remember the Alamo!"

Source:
"ALAMO, BATTLE OF THE." The Handbook of Texas Online. http://www.tsha.utexas.edu/handbook/online/articles/view/AA/qea2.html