I think you mean George Henry Thomas (he really gets no respect).
In 1877, Sherman published an article praising Grant and Thomas, and contrasting them to Robert E. Lee. After noting that Thomas, unlike his fellow Virginian Lee, stood by the Union, Sherman wrote:During the whole war his services were transcendent, winning the first substantial victory at Mill Springs in Kentucky, January 20th, 1862, participating in all the campaigns of the West in 1862-3-4, and finally, December 16th, 1864 annihilating the army of Hood, which in mid winter had advanced to Nashville to besiege him.
His horse, Billy, was named after Sherman.
Amazing that the tragedy of the Civil War is still on our minds ... and is where it should stay.