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
Fort Sumter last Confederate commander, Major Thomas A. Huguenin, a graduate from The Citadel, The Military College of South Carolina, never surrendered Fort Sumter, but General William Tecumseh Sherman's advance through South Carolina finally forced the Confederates to evacuate Charleston on February 17, 1865, and abandon Fort Sumter. The Federal government formally took possession of Fort Sumter on February 22, 1865. On April 14, 1865, mere hours before President Lincoln's assassination, Anderson (now a major general) returned to Sumter with the flag he had been forced to lower after the surrender four years earlier, and raised it in triumph over the ruined