Fort O'Rourke Fair Haven. No visible remains of the fort can be found. Fort O'Rourke Fort O'Rourke is a former Union Army installation now located in the Belle Haven area of Fairfax County in the U.S. state of Virginia. It was the southernmost fort built to defend Washington, D.C. in the American Civil War. Following the surrender of Fort Sumter in Charleston, South Carolina, on April 14, 1861, President Abraham Lincoln declared that "an insurrection existed," and called for 75,000 troops to be called up to quash the rebellion. The move sparked resentment in many other southern states, which promptly moved to
Second Battle of Fort Sumter was later issued to all Union service members who had performed duty at Fort Sumter under the command of Major-General Quincy Adams Gillmore Fort Sumter Armaments, August 17, 1863 After the devastating bombardment, both Major General Quincy A. Gillmore and Rear Admiral John A. Dahlgren, now commanding the South Atlantic Blockading Squadron, determined to launch a boat assault on Fort Sumter for the night of September 8–9, 1863. Cooperation between the Army and Navy was poor. Dahlgren refused to place his sailors and marines under the command of an army officer, so two flotillas set out towards Fort Sumter that