With barely separating the two capital cities, Northern Virginia found itself in the center of much of the conflict. The area was the site of many battles and saw great destruction and bloodshed. The Army of Northern Virginia was the primary army for the Confederate States of America in the east. Owing to the region's proximity to Washington, D.C., and the Potomac River, the armies of both sides frequently occupied and traversed Northern Virginia. As a result, several battles were fought in the area.