Yet there is a dignity in the human spirit which can become most clearly visible in the moment of defeat and disaster.

Even the most painstaking history is a bridge across an eternal mystery.

What a general could do, Thomas did; no more dependable soldier for a moment of crisis existed on the North American continent, or ever did exist... Thomas comes down in history as the Rock of Chickamauga, the great defensive fighter, the man who could never be driven away but who was not much on the offensive. That may be a correct appraisal, Yet it may also be worth making note that just twice in all the war was a major Confederate army driven away from a prepared position in complete rout - at Chattanooga and at Nashville. Each time the blow that routed it was launched by Thomas.

Nathan Bedford Forrest ... used his horsemen as a modern general would use motorized infantry. He liked horses because he liked fast movement, and his mounted men could get from here to there much faster than any infantry could; but when they reached the field they usually tied their horses to trees and fought on foot, and they were as good as the very best infantry. Not for nothing did Forrest say the essence of strategy was to git thar fust with the most men.

The enduring realization that when a great challenge comes, the most ordinary people can show that they value something more than they value their own lives. When the last of the veterans had gone, and the sorrows and bitterness which the war created had at last worn away, this memory remained.

The Civil War was fought in 10,000 places, from Valverde, New Mexico, and Tullahoma, Tennessee, to St. Albans, Vermont, and Fernandina on the Florida coast. More than 3 million Americans fought in it, and over 600,000 men, 2 percent of the population, died in it.

And there is the headlight, shining far down the track, glinting off the steel rails that, like all parallel lines, will meet in infinity, which is after all where this train is going.