Other: When Bowie and his men first enter the Alamo, Travis calls for the colors ceremony and the detail marches to the flagpole. One section is ordered to "halt", then the order "about face" is given. However, the detail does a "right face" instead.

Factual error: The movie's opening scene manages to get wrong almost every historical detail except the names. Sam Houston was never in San Antonio with Colonels Neill, Travis, and Bowie. Then-governor Henry Smith - not General Houston - made Travis a colonel (in December). Bowie did a lot of drinking and carousing, but that never caused him to be demoted or to lose a command. Bowie did marry into the Mexican aristocracy, and he acquired a lot of land, but it would have been ridiculous for Travis to therefore doubt his loyalty to the rebellion. Bowie was one of the rebellion's best-known firebrands and had just taken San Antonio from the Mexicans.

Other: When John Wayne is running about near the chapel with a torch. You can see inside the chapel a lot of Mexican soldiers just stood there not doing anything.

Factual error: The last we see of John Wayne is when, mortally wounded, he lunges into the powder magazine with alighted torch and blows it up. In actuality, this was attempted by an Alamo defender named Robert Evans who was shot dead in the process of unsuccessfully trying to do just this.

Factual error: The final assault began before dawn, around 5:00 in the morning. Travis was killed almost immediately by a shot in the head.