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
Fort Washington Park their services to their home state, Virginia. On January 5, 1861, Ordnance Sergeant Joseph Cameron asked for troops to be sent to Fort Washington. The next day, Captain Algernon S. Taylor and 40 U.S. Marines arrived from the Navy Yard to hold the fort until trained artillery units could be sent. Taylor feared that the 40 Marines were not enough and asked for reinforcements. On January 26, 1861, a company of U.S. Army recruits relieved the Marines. On April 15, the day after Fort Sumter surrendered in Charleston harbor, the War Department sent Company D of the 1st U.S. Artillery