Son of Robert
Selden Garnett (q. v.), born in Essex county, Virginia; graduated from
United States Military Academy, in 1841, as second lieutenant of artillery, and
was an instructor there till October, 1844. In 1845 he went to Mexico as aide
to Gen. Wool, and served with distinction at Palo Alto and Resaca de la Palma;
and was aide to Gen. Taylor at Monterey and Buena Vista. As captain, he was
again an instructor at West Point in 1852-54. Promoted to major he served on
the western frontier. He was on leave of absence in Europe when the civil war
broke out. Returning, he resigned, was commissioned lieutenant-colonel, C. S.
A., and was adjutant-general to Gen. R. E. Lee. In June, 1861, as
brigadier-general, he went into service in western Virginia, and while leading
his troops at Carrick's [sic] Ford,
July 13, was killed by a volley from the enemy. His body was tenderly cared for
by Gen. McClellan, and returned to his friends.
SOURCE: Encyclopedia
of Virginia Biography, Vol. 3, p. 54