ought on the 19th and
20th of September, and Rosecrans was badly defeated, with a heavy loss
in artillery and some sixteen thousand men killed, wounded and captured.
The corps under Major-General George H. Thomas stood its ground, while
Rosecrans, with Crittenden and McCook, returned to Chattanooga. Thomas
returned also, but later, and with his troops in good order. Bragg
followed and took possession of Missionary Ridge, overlooking
Chattanooga. He also occupied Lookout Mountain, west of the town, which
Rosecrans had abandoned, and with it his control of the river and the
river road as far back as Bridgeport. The National troops were now
strongly intrenched in Chattanooga Valley, with the Tennessee River
behind them and the enemy occupying commanding heights to the east and
west, with a strong line across the valley from mountain to mountain,
and with Chattanooga Creek, for a large part of the way, in front of
their line.

On the 29th Halleck telegraphed me the above results, and directed all
the forces that could be spared from my department to be sent to
Rosecrans. Long before this dispatch was received Sherman was on his
way, and McPherson was moving east with most of the garrison of
Vicksburg.

A retreat at that time would have been a terrible disaster. It would
not only have been the loss of a most important strategic position to
us, but it would have been attended with the loss of all the artillery
still left with the Army of the Cumberland and the annihilation of that
army itself, either by capture or demoralization.

All supplies for Rosecrans had to be brought from Nashville. The
railroad between this base and the army was in possession of the
government up to Bridgeport, the point at which the road crosses to the
south side of the Tennessee River; but Bragg, holding Lookout and
Raccoon mountains west of Chattanooga, commanded the railroad, the river
and the shortest and best wagon-roads, both south and north of the
Tennessee, between Chattanooga and Bridgeport. The distance between
these two places is but twenty-six miles by rail, but owing to the
position of Bragg, all supplies for Rosecrans had to be hauled by a
circuitous route north of the river and over a mountainous country,
increasing the distance to over sixty miles.

This country afforded but little food for his animals, nearly ten
thousand of which had already starved, and not enough were left to draw
a single piece of artillery or even the