Question: What lost film is the first motion picture to depict the Battle of the Alamo?
Answer: The Immortal Alamo, a 10-minute 1911 silent film directed by William F. Haddock and shot on location. It is not historically accurate and received mixed reviews when released. The oldest surviving motion picture about the battle is the 1915 silent film Martyrs of the Alamo. It can be watched for free here.