Quick Facts
Date:
February 23, 1836 - March 6, 1836
Location:
San Antonio
United States
Participants:
Mexico
Texas
Context:
Texas Revolution

Battle of the Alamo, battle during the Texas Revolution that occurred from February 23 to March 6, 1836, in San Antonio, Texas. It ended in a decisive victory for Mexican forces over “Texian” volunteers, who were annihilated. It also became a symbol of fierce resistance for the people of Texas and a rallying cry during the Mexican-American War.

The Texas Revolution began in October 1835 with a string of Texan victories that drove the Mexican federal forces south of the Rio Grande by December. This success was short-lived, however. A Mexican army under General Antonio López de Santa Anna advanced north to put down the rebels, and most of the victorious Texas volunteer rebel army went home. Small garrisons were left at several towns, including San Antonio de Béxar (San Antonio), where the Texans occupied a former Spanish mission called the Alamo, named for the tall cottonwood trees that surrounded it. It consisted of three one-story adobe buildings, with log palisades enclosing open plaza areas. Nineteen cannon lined the walls.

Sam Houston, the commanding general of the revolutionary army, had earlier left the mission with the main body of his troops, believing it could not be easily defended. A small militia force remained. The co-commanders, William Travis and James Bowie, did not credit warnings that Santa Anna was coming and did little to lay in food, supplies, or ammunition. They were surprised on February 23 when Santa Anna arrived with his advance detachment. (Estimates of the eventual size of Santa Anna’s army vary widely, from perhaps 1,800 men to as many as 6,000.) His demand for unconditional surrender was answered with a cannon shot. Angered, he gave orders that no quarter was to be given, and a 13-day siege began. The Mexican forces set up artillery opposite the south and east walls and began a steady bombardment, with their cannonballs being shot back by the Texan defenders until the order came to conserve powder. Santa Anna’s infantry maneuvered closer to the Alamo but were careful to stay outside the range of the Texans’ rifled muskets.

Texas Revolution Events

Cold winter weather made life difficult for both sides. Small skirmishes took place with few casualties. On two occasions, a small group of Texan reinforcements broke through the Mexican lines, raising the garrison to what is now believed to 257 men (though estimates vary, with 189 defenders on the official roll) plus families, but many more men joined Santa Anna. Occasionally Texan couriers managed to slip out of the surrounded Alamo with pleas from Travis for reinforcements, but the disorganized provisional Texas government was unable to put together any relief force. On March 3 the last element of Santa Anna’s army arrived, and he prepared his attack.

Before dawn on March 6, four columns of Mexican infantry attacked from different directions. There were no loopholes or firing ports at the Alamo, so the defenders had to expose themselves to fire over the walls. Texan cannon, loaded with nails, horseshoes, and old iron, fired into the Mexican forces and, together with the rifle fire, repulsed the first assault. Regrouping, the Mexican infantry tried again but were driven back. Travis died opposing a mass attack against the weak north wall that finally penetrated the compound. When a cannon covering the south was turned around to meet the attack, Mexican soldiers went over that wall and captured the gun.

When Texan defenders retreated to the adobe barracks buildings for cover, Mexican gunners rolled up cannon and blew down the heavy doors. Infantry then rushed in, and, for more than an hour, room-to-room fighting took place. Bowie died there. Two groups of Texans trying to escape were cut down outside the walls by the cavalry posted there. The last bastion to fall was the chapel, where a small Texan detachment controlled their last cannon. They fired once as Mexican infantry broke through the doors and were then killed in hand-to-hand fighting. The Texan families sheltered there were spared by the Mexicans, but any surviving fighters were executed. Nearly all of the Texan defenders were killed during the battle. Among the dead, famously, was the former Tennessee congressman David “Davy” Crockett. Estimates of the number of Mexican soldiers killed vary significantly, from 600 to 1,600; hundreds more were wounded.

The siege at the Alamo and the fate of its defenders prompted a mass exodus of Texian settlers from numerous towns, an event called the “Runaway Scrape.” Most of those settlers returned to their homes when news arrived of Houston’s victory over Santa Anna at the Battle of San Jacinto. The battle cry of Houston’s troops there was “Remember the Alamo!”

Are you a student?
Get a special academic rate on Britannica Premium.
Raymond K. Bluhm
Britannica Chatbot logo

Britannica Chatbot

Chatbot answers are created from Britannica articles using AI. This is a beta feature. AI answers may contain errors. Please verify important information using Britannica articles. About Britannica AI.

Mexican-American War

Mexico-United States [1846–1848]
Also known as: Guerra de 1847, Guerra de Estados Unidos a Mexico, Mexican War
Quick Facts
Also called:
Mexican War
Spanish:
Guerra de 1847 or Guerra de Estados Unidos a Mexico (“War of the United States Against Mexico”)
Date:
April 1846 - February 1848
Location:
Mexico
Texas
United States
Participants:
Mexico
United States
Top Questions

What was the Mexican-American War?

What did the Mexican-American War have to do with Manifest Destiny?

Was there opposition to the Mexican-American War within the United States?

What did the U.S. gain by winning the Mexican-American War?

How did the Mexican-American War increase sectionalism in the United States?

Mexican-American War, war between the United States and Mexico (April 1846–February 1848) stemming from the United States’ annexation of Texas in 1845 and from a dispute over whether Texas ended at the Nueces River (Mexican claim) or the Rio Grande (U.S. claim). The war—in which U.S. forces were consistently victorious—resulted in the United States’ acquisition of more than 500,000 square miles (1,300,000 square km) of Mexican territory extending westward from the Rio Grande to the Pacific Ocean.

“American blood on American soil”: Polk and the prelude to war

Mexico severed relations with the United States in March 1845, shortly after the U.S. annexation of Texas. In September U.S. Pres. James K. Polk sent John Slidell on a secret mission to Mexico City to negotiate the disputed Texas border, settle U.S. claims against Mexico, and purchase New Mexico and California for up to $30 million. Mexican Pres. José Joaquín Herrera, aware in advance of Slidell’s intention of dismembering the country, refused to receive him. When Polk learned of the snub, he ordered troops under Gen. Zachary Taylor to occupy the disputed area between the Nueces and the Rio Grande (January 1846).

On May 9, 1846, Polk began to prepare a war message to Congress, justifying hostilities on the grounds of Mexican refusal to pay U.S. claims and refusal to negotiate with Slidell. That evening he received word that Mexican troops had crossed the Rio Grande on April 25 and attacked Taylor’s troops, killing or injuring 16 of them. In his quickly revised war message—delivered to Congress on May 11—Polk claimed that Mexico had “invaded our territory and shed American blood on American soil.”

Spot Resolutions and Civil Disobedience: American opposition to the war

Congress overwhelmingly approved a declaration of war on May 13, but the United States entered the war divided. Democrats, especially those in the Southwest, strongly favoured the conflict. Most Whigs viewed Polk’s motives as conscienceless land grabbing. Indeed, from the outset, Whigs in both the Senate and the House challenged the veracity of Polk’s assertion that the initial conflict between U.S. and Mexican forces had taken place in U.S. territory. Further, legislators were at odds over whether Polk had the right to unilaterally declare that a state of war existed. Principally at issue was where the encounter had actually taken place and the willingness of Americans to acknowledge the Mexican contention that the Nueces River formed the border between the two countries. Active Whig opposition not only to the legitimacy of Polk’s claim but also to the war itself continued well into the conflict. In December 1846 Polk accused his Whig doubters of treason. In January 1847 the by-then Whig-controlled House voted 85 to 81 to censure Polk for having “unnecessarily and unconstitutionally” initiated war with Mexico.

Among the most-aggressive challenges to the legitimacy of Polk’s casus belli was that offered by future president Abraham Lincoln, then a first-term member of the House of Representatives from Illinois. In December 1847 Lincoln introduced eight “Spot Resolutions,” which placed the analysis of Polk’s claim in a carefully delineated historical context that sought to

Louis IX of France (St. Louis), stained glass window of Louis IX during the Crusades. (Unknown location.)
Britannica Quiz
World Wars

obtain a full knowledge of all the facts which go to establish whether the particular spot of soil on which the blood of our citizens was so shed was, or was not, our own soil at that time.

Ultimately, the House did not act on Lincoln’s resolutions, and Polk remained steadfast in his claim that the conflict was a just war.

Are you a student?
Get a special academic rate on Britannica Premium.

Abolitionists saw the war as an attempt by the slave states to extend slavery and enhance their power with the creation of additional slave states out of the soon-to-be-acquired Mexican lands. One abolitionist who agreed with that interpretation was author Henry David Thoreau, who was incarcerated in July 1846 when he refused to pay six years’ worth of back poll taxes because he felt the U.S. government’s prosecution of the war with Mexico was immoral. Although he spent only a single night in jail (his aunt, against his wishes, paid the taxes, thus securing his release), Thoreau documented his opposition to the government’s actions in his famous book-length essay Civil Disobedience (1849), insisting that if an injustice of government is

of such a nature that it requires you to be the agent of injustice to another, then, I say, break the law. Let your life be a counter friction to stop the machine.

Britannica Chatbot logo

Britannica Chatbot

Chatbot answers are created from Britannica articles using AI. This is a beta feature. AI answers may contain errors. Please verify important information using Britannica articles. About Britannica AI.