Fort O'Rourke 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 convene discussions of secession. The Virginia State Convention passed an ordinance
Battle of Fort Sumter positions except Fort Sumter were to be seized. State troops quickly occupied Fort Moultrie (capturing 56 guns), Fort Johnson on James Island, and the battery on Morris Island. On December 27, an assault force of 150 men seized the Union-occupied Castle Pinckney fortification, in the harbor close to downtown Charleston, capturing 24 guns and mortars without bloodshed. On December 30, the Federal arsenal in Charleston was captured, resulting in the acquisition of more than 22,000 weapons by the militia. The Confederates promptly made repairs at Fort Moultrie and dozens of new batteries and defense positions were constructed throughout the Charleston