...nce. 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 agreed upon between Gilmore and Dahlgren . An arrangement was made by which Dahlgren was to furnish the boats and Gilmore the men, and Battery Gregg, at Cummins Point, was to be surprised. But for this information, it seems almost certai...