...structed me, by order of Major-General Thomas, as to the time of attack. At eight o'clock, the time designated, the attack was made by the troops of Colonel Morgan and Lieutenant-Colonel Grosvenor, Colonel Morgan commanding — advancing from the Murfreesboro turnpike towards Riddler's Hill, rapidly driving in the pickets of the enemy and assaulting his line of works between the U. and C. railroad and the...