Battle of San Jacinto April 21, 1836 Sam Houston and the Texan army retreated east following the fall of the Alamo. On the morning of April 19, the Texans marched within a half mile of the San Jacinto River, where they prepared to fight the pursuing Mexican force. The next morning, Santa Anna’s troops marched across the prairie in a battle array. After a hail of Texas artillery brought him to a halt, Santa Anna formed his men in line for battle. Colonel Sidney Sherman of the Texas Cavalry, charged the Mexican army. This inspired the Texans for battle, but broke off the attack on the much larger Mexican force. Both sides withdrew and set up camp for the night. The next day about seven hundred and fifty Texans advanced on the Mexican camp, which had not posted sentries as the soldiers rested. Santa Anna assumed the smaller Texan force would not attack. He expected to attack and defeat them when he chose to do so. Houston sent a few men to destroy Vince’s Bridge, which would leave the Mexicans without an escape. When Houston gave his order to advance, “Remember the Alamo!” and “Remember Goliad!” were shouted. Taken by surprise, seven hundred of the 1,500 Mexicans were killed; and more than seven hundred and thirty were taken prisoner in a twenty-minute battle. The Battle for Texas was won!