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 at Sumter when he heard the Confederate fire, but the secrecy of the operation had kept him unaware that a relief expedition was in progress and he chose not to start a general engagement. In a letter delivered January 31, 1861, Governor Pickens demanded of President Buchanan that he surrender Fort Sumter because, "I regard that possession is not consistent with the dignity or safety of the State of South Carolina." Conditions at the fort were difficult during the winter of 1860–61. Rations were short and fuel for heat was limited. The garrison scrambled to complete the defenses as best