...d 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 [William B.] 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 awa...