... General Gilmore, of the Federal army, and Admiral Dahlgren, of the navy, was transmitted by our signal officers to General Beauregard in the city, and such as he desired us to know were then sent to Colonel Keitt for his information and guidance. One of these dispatches, which was read by Colonel Keitt to a few of us who were in his confidence, detailed the plan of attack on Battery Gregg, which had been ag...