The Battle of the Alamo took place in 1836 at the Alamo in what is now San Antonio, Texas, United States. Texas then belonged to Mexico, but many people wanted to have their own new country. Over 100 of them, including former Representative Davy Crockett, were in the Alamo. Under the Spanish Empire, it had been a mission like a church. A Mexican army of several thousand arrived, led by General Antonio López de Santa Anna. For 13 days, the Mexican army surrounded the Alamo and attacked it on March 6, 1836. All 187 of the men from Texas were killed. 