 When he was 22, during the 1836 Texas Revolution, Young Perry Alsbury fought on the Texian side in Captain Henry Wax Karnes’ Cavalry, better known as "Deaf Smith's spy company".Prior to the pivotal Battle of San Jacinto on April 21, 1836, he joined a small company in passing close to enemy lines to burn the strategic Vince's Bridge to prevent reinforcement and escape of Antonio López de Santa Anna.The others who were with him on that mission were Deaf Smith, John Coker, Denmore W. Reaves, John T. Garner, Moses Lapham and Edwin R. Rainwater.