Heart of the Civil War Heritage Area

The Heart of the Civil War Heritage Area is a geographical location recognized by the Maryland Heritage Areas Program. This area includes the Antietam National Battlefield and several other important American Civil War sites in Maryland. Parts of Maryland's Carroll, Frederick and Washington counties are included in the Heritage Area.

Maryland's Civil War history
As a border state, many Maryland residents (particularly those in the Baltimore area, planned to join the Confederacy. However, imprisonment of those favoring secession and Federal occupations of Maryland cities prevented secession. Western Maryland and Central Maryland for the most part remained loyal to the Union.

For example, the 'Heart of the Civil War' document states: "During the summer of 1861, the Maryland General Assembly met in Frederick, which was at the time the largest city in Maryland not under Federal occupation. This legislative body was dominated by pro-secession delegates, and as talk of secession increased throughout the summer, many delegates were eventually arrested on orders from the pro-Union governor of Maryland to prevent the Assembly from voting."