Thomas, George H. (Henry) (1816 - 1870), a United States army officer. He was called "the Rock of Chickamauga" for his stubborn stand after most of the Union forces were routed in the Battle of Chickamauga (1863).
Union leaders, such as Ulysses S. Grant and George McClellan, led the American army in the fight to restore order to the Union. Here you can find information about important Union figures.
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