- The filming took 7 months, and although the last battle only lasted 6 hours in historical records, it took a full month to shoot.
- Disney originally planned to release the film during Christmas 2003.
- During the filming of the film, the local news media had allowed helicopters to take aerial photos of the Alamo battlefield, which caused strong dissatisfaction among the entire crew, because some films could not be used.
- Billy Bob Thornton learned to play the violin for the film.
- The scene had to be re-shot after an extra had hidden a bag of Doritos chips before he was on set, and when filming began, he lay on the ground and pretended to be dead.
- Texas Lands Secretary Jerry Patterson has appeared in the film.
- Some descendants of the Alamo defenders served as extras in the film.
- In fact, it didn't rain on the day of the Battle of the Alamo.
The Alamo behind the scenes gags
-
William Travis: We could try to get you out with an escort. If you're captured, perhaps given your condition, mercy would be extended.
James Bowie: I don't deserve mercy. I do deserve a drink. You got anything stronger than water?
[He smiles]
William Travis: I don't drink, Jim, you know that. I gamble, go to whores, run off on wives... but drinking, I draw the line.
James Bowie: You know, if you live five more years, you might just be a great man.
William Travis: I think I will probably have to settle for what I am now.
-
Antonio Lopez de Santa Ana: [in Spanish] Move this battery forward!
Mexican Lieutenant: Excelencia, with all due respect for your safety, Davy Crockett is in the Alamo.