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
Western Theater of the American Civil War overland route from Pensacola and started besieging Fort Blakely. On April 8, Union forces opened an artillery bombardment on Spanish fort with ninety field pieces, followed by an infantry attack which overwhelmed the Confederate defenders. Canby then moved against Fort Blakely the next day, overrunning that fort as well. These battles forced the Confederate commander of Mobile, Maj. Gen. Dabney H. Maury, to evacuate the city. When he received word of Lee's and Johnston's surrenders, Lt. Gen. Richard Taylor, commander of the Confederate Department of Alabama, Mississippi, and East Louisiana, surrendered his forces to Canby on May 4, while Forrest