What was the mistake that Santa Anna made that led to the defeat of his army?

Answer 1

Santa Anna's critical mistake was underestimating the resolve and tactical capability of the Texian forces during the Battle of San Jacinto. He divided his troops and failed to maintain a strong defensive position, which left his army vulnerable. Additionally, his overconfidence led to a lack of proper reconnaissance, allowing the Texian forces to launch a surprise attack that decisively defeated his army. This miscalculation ultimately contributed to the loss of Texas to the Texians and the retreat of Santa Anna's forces.