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 relief expedition arrived. The Confederate cabinet, meeting in Montgomery, endorsed Davis's order on April 9. Only Secretary of State Robert Toombs opposed this decision: he reportedly told Jefferson Davis the attack "will lose us every friend at the North. You will only strike a hornet's nest. ... Legions now quiet will swarm out and sting us to death. It is unnecessary. It puts us in the wrong. It is fatal." Beauregard dispatched aides—Col. James Chesnut, Col. James A. Chisholm, and Capt. Stephen D. Lee—to Fort Sumter on April 11 to issue the ultimatum. Anderson refused, although he reportedly commented, "I