ordered to move
down the river on the north side, by a back road, until opposite
Whitesides, then cross and hold the road in Hooker's rear after he had
passed. Four thousand men were at the same time detailed to act under
General Smith directly from Chattanooga. Eighteen hundred of them, under
General Hazen, were to take sixty pontoon boats, and under cover of
night float by the pickets of the enemy at the north base of Lookout,
down to Brown's Ferry, then land on the south side and capture or drive
away the pickets at that point. Smith was to march with the remainder
of the detail, also under cover of night, by the north bank of the river
to Brown's Ferry, taking with him all the material for laying the bridge
as soon as the crossing was secured.

On the 26th, Hooker crossed the river at Bridgeport and commenced his
eastward march. At three o'clock on the morning of the 27th, Hazen
moved into the stream with his sixty pontoons and eighteen hundred brave
and well-equipped men. Smith started enough in advance to be near the
river when Hazen should arrive. There are a number of detached spurs of
hills north of the river at Chattanooga, back of which is a good road
parallel to the stream, sheltered from the view from the top of Lookout.
It was over this road Smith marched. At five o'clock Hazen landed at
Brown's Ferry, surprised the picket guard, and captured most of it. By
seven o'clock the whole of Smith's force was ferried over and in
possession of a height commanding the ferry. This was speedily
fortified, while a detail was laying the pontoon bridge. By ten o'clock
the bridge was laid, and our extreme right, now in Lookout valley, was
fortified and connected with the rest of the army. The two bridges over
the Tennessee River--a flying one at Chattanooga and the new one at
Brown's Ferry--with the road north of the river, covered from both the
fire and the view of the enemy, made the connection complete. Hooker
found but slight obstacles in his way, and on the afternoon of the 28th
emerged into Lookout valley at Wauhatchie. Howard marched on to Brown's
Ferry, while Geary, who commanded a division in the 12th corps, stopped
three miles south. The pickets of the enemy on the river below were now
cut off, and soon came in and surrendered.

The river was now opened to us from Lookout valley to Bridgeport.
Between Brown's Ferry and Kelly's Ferry the Tennessee runs through a
narrow gorge in the mountains, which