Battles of Lexington and Concord

The Battles of Lexington and Concord on April 19, 1775 were the opening military engagements of the American Revolutionary War. For months, colonial leaders had been stockpiling weapons at Concord while General Gage prepared a secret expedition to seize them. On the night of April 18, Gage dispatched 700 British regulars under Lieutenant Colonel Francis Smith. Paul Revere and William Dawes rode ahead to warn the countryside.

At Lexington Green at dawn, Captain John Parker positioned 77 militiamen to meet the British column. A shot was fired — the famous 'shot heard round the world' — and the British opened fire. Eight Americans were killed and ten wounded. The British continued to Concord. At the North Bridge, Concord militiamen under Colonel James Barrett confronted a British detachment and exchanged fire, killing two redcoats — the first British soldiers killed by colonists.

The British retreat to Boston became a nightmare. Thousands of militiamen lined the roads for sixteen miles, firing from behind walls, trees, and houses. The British column, reinforced by Lord Percy's brigade with cannon, barely made it back to Charlestown, suffering 273 casualties.

The battles electrified the continent. Within days, thousands of men from across New England marched toward Boston. What had been a political dispute became a shooting war. The battles demonstrated that organized militia could inflict devastating casualties on professional troops in the right terrain and provided the colonists with an enormous propaganda victory. The militiamen's performance validated the Patriot argument that free men fighting for their homes could stand against soldiers fighting for pay.

The military lessons of April 19 shaped American tactics throughout the war. The superiority of aimed fire from cover, the importance of militia as a mobile defensive force, and the power of the aroused countryside became central to American strategy. The day is still commemorated as Patriots' Day in Massachusetts and Maine.