 To the sound of drum and bugle, he wrapped the flag around the plume of his hat, weighted it with a stone from the river bank, and lowered it into the river.Shelby’s unit became known as “The Undefeated” and was used as a basis for the 1969 John Wayne-Rock Hudson film by the same name.Saloons, gambling houses, and smuggling operations proliferated in and around Eagle Pass during Reconstruction.