The Battle of the Alamo was a pivotal event and military engagement in the Texas Revolution. The Alamo was a former Spanish mission in San Antonio de Béxar, Texas, occupied by Texans. In 1836, Mexican troops under President General Antonio López de Santa Anna laid siege to the Alamo, and after 13 days, they reclaimed it, killing most of the occupants. The battle inspired many Texans to join the Texian Army, and the phrase "Remember the Alamo" became a rallying cry for the Texas Revolution.

The battle lasted roughly 90 minutes, and by daybreak, all the defenders had been killed. The exact number of defenders is unknown, but estimates range from 182 to 257. Among the defenders were famous frontiersman Davy Crockett and inventor of the Bowie knife, James Bowie.

The Battle of the Alamo was part of the Texas Revolution, which began in 1835 when Texans rebelled against the Mexican governments centralization of power. The Texans sought independence from Mexico, and the Battle of the Alamo became a symbol of their fierce resistance. Two months after the battle, at the Battle of San Jacinto, General Sam Houston led a Texan army against Mexican forces and shouted "Remember the Alamo!" as they fought their way to victory, earning independence for Texas.