The Battles of Lexington and Concord signified the onset of open warfare between Britain and the American colonies, heralding the start of the Revolutionary War.

On April 19, 1775, colonial militias faced off against British soldiers in a display of defiance, resulting in armed conflict. These encounters illustrated the colonists' readiness to defend their rights and freedoms, marking a transition from political dissent to military engagement. The clashes rallied colonial support for the revolutionary movement and laid the groundwork for subsequent battles, reinforcing the colonies' resolve to attain independence from British authority.