Yes, the Texian forces lost the Battle of the Alamo on March 6, 1836. After a 13-day siege, Mexican troops led by General Antonio López de Santa Anna launched a pre-dawn assault and successfully breached the walls of the mission. Virtually all of the Texian defenders—including famous figures like Davy Crockett, James Bowie, and William B. Travis—were killed in the battle. However, while the battle was a tactical defeat, it became a strategic "victory in spirit." The sacrifice of the defenders delayed Santa Anna’s army and served as a powerful rallying cry ("Remember the Alamo!") that inspired the Texian army to defeat the Mexican forces just weeks later at the Battle of San Jacinto. So, while Texas lost the physical fortress and the men inside, the event directly fueled the eventual independence of the Republic of Texas.