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 casualties were 8 killed, 19 wounded, and 105 captured (including 15 of the wounded). The Confederates did not suffer any casualties in the assault. After the unsuccessful boat assault, the bombardment recommenced and proceeded with the varying degree of intensity, doing more damage to Fort Sumter until the end of the war. The garrison continued to suffer casualties. The Confederates continued to salvage guns and other material from the ruins and harassed the Union batteries on Morris Island with sharpshooters. The Confederates mounted four columbiads, one columbiad rifled, and two rifled 42-pounders, in the left face, bottom tier casemates. The