On June 17, 1861, Confederate soldiers ambushed 4 companies of Ohio Union troops, advancing towards Vienna, Virginia from the Alexandria, Loudon & Hampshire Railroad line at Alexandria, Virginia, at the Park Street Railroad Crossing, in the Battle of Vienna. This was the fifth land battle of the U.S. Civil War and was the opening act to the Battle of First Bull Run, also known as the Battle of First Manassas.
Hamilton Historical Records 