George Henry Thomas
George Henry Thomas (July 31, 1816 – March 28, 1870) was a career United States Army officer and a Union General during the American Civil War, one of the principal commanders in the Western Theater. Thomas served in the Mexican-American War and later chose to remain with the United States Army for the Civil War, despite his heritage as a Virginian.
Benson John Lossing, ed. Harper's Encyclopedia of United States History (vol. 9) (New York, NY: Harper and Brothers, 1912)
Courtesy the private collection of Roy Winkelman