Final answer:
The South Alamo Wall is tied to the 1836 Battle of the Alamo during the Texas Revolution, where Texan defenders suffered heavy casualties against the Mexican army led by Santa Anna.
Step-by-step explanation:
The South Alamo Wall is a historical reference to the defenses of the Alamo mission during the famous Battle of the Alamo in 1836, part of the Texas Revolution. Mexican troops led by Antonio López de Santa Anna besieged the Alamo, where a small group of Texan defenders held out. The Texan defenders suffered catastrophic casualties, and after about an hour of combat, the numerical superiority of the Mexican army prevailed, and they breached the walls of the mission.
The defenders, including iconic figures like James Bowie and Davy Crockett, fought fiercely but were ultimately outnumbered. All but a few defenders were killed in the battle, with the survivors, excluding noncombatants, being executed as prisoners. This siege laid the groundwork for the rallying cry "Remember the Alamo!" which was used by Texas forces during the subsequent Battle of San Jacinto.