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When
Grant arrived at
Chattanooga,
he found
General Thomas alive to the importance of immediately securing a safe and speedy way to that post for supplies for the Army of the Cumberland.
It could not exist there ten days longer, unless food and forage could be more speedily and bountifully furnished.
In concert with
General W. F. Smith, who had been appointed
Chief Engineer of the army, he had been making preparations for the immediate concentration of
Hooker's corps at
Bridgeport, with the view of opening the river and main wagon road from that point
to Brown's Ferry on the
Tennessee, by which supplies might be taken to
Chattanooga across the peninsula known as
Moccasin Point,
2 and thus avoid the Confederate batteries and sharp-shooters at
Lookout Mountain altogether.
Grant approved
Thomas's plan, and ordered its execution.
It was that
Hooker should cross the river at
Bridgeport with all the force at his command, and, pushing on to Wauhatchie, in
Lookout Valley, threaten
Bragg with a flank attack.
General Palmer was to march his division down the north side of the
Tennessee to a point opposite
Whitesides, where he was to cross the river and hold the road passed o ver by
Hooker.
General Smith was to go down the river from
Chattanooga, under cover of darkness, with about four thousand troops, some in batteaux, and some on foot along the north side and make a lodgment on the south bank of the stream at Brown's Ferry, and seize the range of hills at the mouth of
Lookout Valley, which command ed the Kelly's Ferry road.
The movements of
Hooker and
Palmer might be made openly, but
Smith's could only be performed in secret.
Hooker crossed at
Bridgeport on pontoon bridges on the morning of the 26th
without opposition,
3 and pushed on to Wauhatchie, which he reached on the 28th; and on the nights of the 26th and 27th,
Smith successfully performed his part of the plan.
Eighteen hundred of his troops, under
General Hazen, were embarked at
Chattanooga on batteaux, intended to be used in the construction of a pontoon bridge, and at two o'clock in the morning they floated noiselessly, without oars, close under the banks past the
point of Lookout Mountain, along a line of Confederate pickets seven miles in length, without being discovered, and arrived at Brown's Ferry just at