Can you defend the Alamo against the overwhelming Mexican forces? Use your Crockett cards wisely to defeat the attackers! Hold the Alamo and become a hero of the Mexican war. (February 23 - March 6, 1836) The Battle of the Alamo. This was a pivotal event in the Texas Revolution. Mexican troops under President General Antonio Lopez de Santa Anna started a 13-day siege, reclaiming the Alamo Mission near San Antonio de Bexar (modern-day San Antonio, Texas, United States), Santa Anna's refusal to take prisoners during the battle, killing most of the occupants inside, inspired many Texans and Tejanos to join the Texan Army. Motivated by their written desire to preserve a border open to immigration, and a desire fro revenge, the Texans defeated the Mexican Army at the Battle of San Jacinto, on April 21, 1836, ending the rebellion in favor of the newly formed Republic of Texas