On March 8, 1862, the Union and Confederates made history when the Souths first ironclad ventured down the Elizabeth River into Hampton Roads to attack the wooden-sided U.S. blockading fleet anchored there. Built on the hull of the U.S.S. Merrimac (which had been scuttled and burned when the Federals abandoned the Gosport Navy Yard in April, 1861), the new warship had been christened C.S.S. Virginia, but it was still mostly remembered by its original name and referred to by it. After ramming and sinking the twenty-four-gun wooden hulled steam-sailing sloop Cumberland, the Merrimac headed for the fifty-gun frigate Congress. An awe struck Union officer watched the one-sided fight as the Merrimac fired "shot and shell into her with terrific effect, while the shot from the Congress glanced from her iron-plated sloping sides, without doing any apparent injury." The results of the first day's fighting at Hampton Roads proved the superiority of iron over wood, but on the next day iron was pitted against iron as the U.S.S. Monitor arrived on the scene. It was just in time to challenge the Merrimac, which was returning to finish off the U.S. blockading squadron. The Confederate ironclad carried more guns than the Union Monitor, but it was slow, clumsy, and prone to engine trouble. The Union prototype, as designed by John Ericsson, was the faster and more maneuverable ironclad, but it lacked the Rebel vessel's brutish size and power. The Merrimac's officers had heard rumors about a Union ironclad, yet, according to Lieutenant Wood: "She could not possibly have made her appearance at a more inopportune time for us. Lieutenant S. Dana Greene, an officer aboard the Monitor, described the first exchange of gunfire: "The turrets and other parts of the ship were heavily struck, but the shots did not penetrate; the tower was intact, and it continued to revolve. A look of confidence passed over the men's faces, and we believed the Merrimac would not repeat the work she had accomplished the day before." Neither ironclad seriously damaged the other in their one day of fighting, March 9, 1862, but the Merrimac was indeed prevented from attacking any more of the Union's wooden ships. Naval warfare would never be the same. After the war, Lieutenant S. Dana Greene wrote an account of the ironclad battle that became part of the well known Battles & Leaders of the Civil War Series. This edition is specially formatted with depictions of the ironclads.