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 trajectories high enough to seriously threaten Fort Moultrie. Moreover, although the Federals had moved as many of their supplies to Fort Sumter as they could manage, the fort was quite low on ammunition, and was nearly out at the end of the 34-hour bombardment. A more immediate problem was the scarcity of cloth gunpowder cartridges or bags; only 700 were available at the beginning of the battle and workmen sewed frantically to create more, in some cases using socks from Anderson's personal wardrobe. Because of the shortages, Anderson reduced his firing to only six guns: two aimed at Cummings Point,