David Twiggs

David Emanuel Twiggs (February 14, 1790 – July 15, 1862), born in Georgia, was a career army officer, serving during the War of 1812, the Black Hawk War, and Mexican–American War.
As commander of the U.S. Army's Department of Texas when the American Civil War broke out, he surrendered his entire command to Confederate commissioners, with facilities, armaments and other supplies valued at $1.6 million. Dismissed from the US Army and described as a traitor, he was commissioned as a general of the Confederate States Army in 1861. But, recognizing he was in poor health, he quickly resigned his commission that year. He was the oldest Confederate general to serve, even briefly, in the Civil War.
He was one of four general officers of the line in the U.S. Army in 1861, along with Winfield Scott, John Wool, and William Harney. As there was then no mandatory retirement, all four men were over the age of 60, with three having served in the War of 1812, half a century earlier.
Twiggs's command included about 20% of the Army, guarding the Mexican border. As states began to secede, he met with a trio of Confederate commissioners, including Philip N. Luckett and Samuel A. Maverick, and surrendered his entire command — all the federal installations, property, and soldiers in Texas — to the Confederacy. This included 20 military installations (including the Federal Arsenal at the Alamo), 44 cannons, 400 pistols, 1,900 muskets, 500 wagons, and 950 horses, valued at a total of $1.6 million. He did insist that all Federals be allowed to retain personal arms and sidearms, all artillery (?), and flags and standards.
Twiggs died of pneumonia in Augusta, Georgia on July 15, 1862.
https://en.wikipedia.org/wiki/David_E._Twiggs