Historian Bobrick argues here that George H. Thomas was the greatest and most successful general of the Civil War. Because Thomas didn't live to write his memoirs, his reputation has been largely shaped by others, most notably Grant and Sherman, who, Bobrick says, diminished Thomas' successes in their favor in their own memoirs. Born in Virginia, Thomas remained loyal to the Union, unlike fellow Virginian Robert E. Lee. In the entire Civil War, he...