 The Louisiana Tigers, first raised by Major Chatham Roberdeau Wheat, had a large number of Irish American members.Company E, Emerald Guard, 33rd Virginia Infantry of the Stonewall Brigade composed of Irish immigrant volunteers may have been first to make the infamous "rebel yell" at 1st Bull Run, attacking 14th New York guns on Henry Hill.The Davis Guard, a company of mostly Irish-American men from the Houston and Galveston area, won a lopsided victory Second Battle of Sabine Pass in 1863.