Also known as "the Shot Heard 'Round the World," the Battles of Lexington and Concord were the first battles of the American Revolution. Fought on April 19, 1775 in Middlesex County, the battles were actually fought in Lixington, Concord, Cambridge, and Menotomy (which is know known as Arlington). The shots were fired at the break of dawn the morning after Paul Revere and Joseph Warren warned the Minutemen that the British were coming.