...nd numbered thirty-five vessels, including eighteen or nineteen mortar-boats for throwing shells, and transports bearing an army of 3,000 men. And, as if to add to the calamities of the Confederates, Fort Pillow and Memphis also fell soon after their arrival below Vicksburg, and the entire Mississippi gunboat squadron from the upper river began to arrive, consisting of ironclads, wooden gunboats, mortar-boat...