...General Foster's plan of defense, on my arrival (in August), depended upon the presence of a goodly number of gunboats, which should command the interior of his flank-works, Stephenson, Anderson, and Spinola , and sweep the ground in form of the Cremaillere line, and also on the other side of the Trent, about Amory and Gaston. Upon calling his attention to the uncertain nature of the Naval defences, he ...