...he bridge, but, when ready, to wait for his word. The troops were put in place. Every good spot was occupied by favoring cannon. McClellan at eight o'clock sent the word. Why, nobody knows, but Burnside , standing with Cox, did not receive the order till nine o'clock. He then directed Cox to execute it. Cox went to the front to watch for results, and in person set Crook's brigade, backed up by Sturgi...