The Alamo By smamolo Feb 23, 1836 Residents began fleeing Bexar. Period: Feb 23, 1836 to Mar 6, 1836 The Alamo Feb 24, 1836 A Mexican scout becomes the first fatality of the siege. Feb 24, 1836 To the People of Texas & All Americans in the World.(A plea for help) Feb 25, 1836 Mexican soldiers cross the San Antonio River. Feb 26, 1836 320 men, four cannons, and several supply wagons march toward the Alamo. Feb 27, 1836 William B. Travis ordered Samuel G. Bastian to go to Gonzales "to hurry up reinforcements". Feb 27, 1836 Mexican General José de Urrea had soundly defeated Texian Colonel Frank W. Johnson at the Battle of San Patricio. Mar 3, 1836 Texians watched from the walls as approximately 1,000 Mexican troops marched into Béxar. Mar 4, 1836 A local woman approached Santa Anna to negotiate a surrender for the Alamo defenders.[ Mar 6, 1836 The Alamo falls.