Siege artillery in the American Civil War were used by the Federal troops as their trenches approached Fort Wagner and field artillery was placed in the trenches to defend against possible Confederate sorties. While Fort Wagner was subject to near constant bombardment from the batteries listed in the table below, as approaches neared the fort's ditch the bombardment increased. Fire from U.S. Navy ships, particularly the USS "New Ironsides", proved very effective. The navy were able to skip the round shells from their XI-inch Dahlgren guns off the water, over the ramparts, and into the fort. Several heavy Parrott rifles that had been directed against Fort Sumter
France and the American Civil War France and the American Civil War The Second French Empire remained officially neutral throughout the American Civil War and never recognized the Confederate States of America. The United States of America warned that recognition would mean war. France was reluctant to act without British collaboration, and the British rejected intervention. Emperor Napoleon III realized that a war with the US without allies "would spell disaster" for France. However, the textile industry needed cotton, and Napoleon had imperial ambitions in Mexico, which could be greatly aided by the Confederacy. At the same time, other French political leaders, such as Foreign Minister