Position of Union and Rebel armies at Fredericksburg, December. 1st 1862.

UNITED STATES - CIRCA 1862: Map shows the area surrounding Fredericksburg, Va. including Spotsylvania Courthouse, Chancellorsville and Falmouth, during the Fredericksburg Campaign. This image shows the situation several days before the battle of Fredericksburg, on December 13th, during which Burnside ordered several futile attacks against Lee's forces. After losing over 12,000 men, the Federal forces withdrew on December 15th. Hand Drawn Map (Photo by Buyenlarge/Getty Images)