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 in Charleston's harbor, including Fort Sumter and Fort Moultrie, which were not among the sites seized initially. Fort Moultrie on Sullivan Island was the oldest—it was the site of fortifications since 1776—and was the headquarters of the U.S. Army garrison. However, it had been designed as a gun platform for defending the harbor, and its defenses against land-based attacks were feeble; during the crisis, the Charleston newspapers commented that sand dunes had piled up against the walls in such a way that the wall could easily be scaled. When the garrison began clearing away the dunes, the papers objected. Major