Capital Subdivision Capital Subdivision The Capital Subdivision is a railroad line owned and operated by CSX Transportation in the U.S. state of Maryland and the District of Columbia. The line runs from near Baltimore, Maryland southwest to Washington, D.C. along the former Baltimore and Ohio Rail Road (B&O) Washington Branch. The subdivision's Alexandria Extension provides a connection to Virginia and points south. The northeast end of the line is at Halethorpe, Maryland, just north of the historic Thomas Viaduct, where it meets the Baltimore Terminal Subdivision and the Old Main Line Subdivision. Its southwest end is at the yard north of Union
Maryland in the American Civil War and in particular whether such conditions formed part of a deliberate policy of "vindictive directives" from Washington, is a matter of some debate. The state capital Annapolis's western suburb of Parole became a camp where prisoners-of-war would await formal exchange in the early years of the war. Around 70,000 soldiers passed through Camp Parole until Lt. Gen. Ulysses S. Grant assumed command as General-in-Chief of the Union Army in 1864, and ended the system of prisoner exchanges. Those who voted for Maryland to remain in the Union did not at first contemplate the emancipation of Maryland's many slaves, or indeed