The last flag to fly over an organized Confederate force was buried in the river near this spot on July 4, 1865, by Gen. Jos. O. Shelby, of Missouri. His un-surrendered cavalry brigade, with arms, cannon and ragged battle flags, marched across Texas three months after Lee's surrender, to enter Mexico in the hope to continue their fight. As a last rite on Texas soil, Shelby assembled his command on the banks of the Rio Grande. At sound of drum and bugle, their flag was folded, weighted and consigned to the waters of the muddy Rio. (1964)