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 Revolution capital of the colonies when the Second Continental Congress met there during December 1776 to February 1777, after Philadelphia had been threatened with occupation by the British "Redcoats". Towards the end of the struggle, from November 26, 1783, to June 3, 1784, the state's capital Annapolis, briefly served as the capital of the fledgling confederation government (1781-1789) of the United States of America, and it was in the Old Senate Chamber of the Maryland State House on State Circle in Annapolis that General George Washington famously resigned his commission as commander in chief of the Continental Army on December 23,