...us. But later, the lost despatch having turned up at headquarters of General McClellan, that commander apprised the authorities of the true condition of affairs in the following: Headquarters, Frederick , September 13, 1862, 12 M. (Received 2.35 A. M., September 14.) To The President: I have the whole rebel force in front of me, but am confident, and no time shall be lost. I have a difficult ta...