...this direction were thoroughly kept at bay. Commencing at Red Bluff, on the Carolina shore, a series of advanced works extended across the Savannah river, along St. Augustine creek, by the way of Whitemarsh Island , Thunderbolt Bluff, the Isle of Hope, Beaulieu, and Rose Dew, until it rested upon the Great Ogeechee river. As, during the siege, few changes were made in the armament of those fixed batteries, ...