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 Confederate forces in Charleston. Beauregard energetically directed the strengthening of batteries around Charleston harbor aimed at Fort Sumter. Conditions in the fort, growing increasingly dire due to shortages of men, food, and supplies, deteriorated as the Union soldiers rushed to complete the installation of additional guns. The resupply of Fort Sumter became the first crisis of the administration of the newly inaugurated U.S. President Abraham Lincoln following his victory in the election of November 6, 1860. He notified the Governor of South Carolina, Francis W. Pickens that he was sending supply ships, which resulted in an ultimatum from the Confederate