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
Battle of Fort Sumter Sumter became critical, President Lincoln ordered a relief expedition, to be commanded by former naval captain (and future Assistant Secretary of the Navy) Gustavus V. Fox, who had proposed a plan for nighttime landings of smaller vessels than the "Star of the West". Fox's orders were to land at Sumter with supplies only, and if he was opposed by the Confederates, to respond with the U.S. Navy vessels following and to then land both supplies and men. This time, Maj. Anderson was informed of the impending expedition, although the arrival date was not revealed to him. On April 6, Lincoln