This document provides an overview of Paul Revere's famous ride on April 18, 1775 to warn colonists that British troops were marching to Concord. It describes how Dr. Warren learned of the British plan and sent Revere to warn Samuel Adams and John Hancock. Revere rode through the night to Lexington, waking colonists along the way. When British troops encountered armed colonists on Lexington Green, shots were fired, marking the first battles of the American Revolutionary War. The document provides historical context and details surrounding Revere's ride and its importance as a catalyst for the war.