13. Battle of Bull Run (1861)
On July 21, 1861, near the quiet town of Manassas, Virginia, the first major land engagement of the Civil War shattered any illusions of a swift, decisive conflict. Known as the Battle of Bull Run, this brutal clash saw inexperienced Union and Confederate armies collide chaotically, resulting in disorganized combat and widespread panic. Ultimately, Confederate forces emerged victorious, sending Union troops retreating back toward Washington in disarray. The shocking defeat exposed the nation’s unpreparedness and served as a sobering indication that the war ahead would be prolonged, costly, and far more difficult than anyone had anticipated.
