The Battle of Lexington and Concord took place on April 19, 1775, marking the start of the American Revolutionary War. British troops aimed to seize colonial military supplies stored in Concord, Massachusetts. As they marched, they encountered colonial militia at Lexington, where the first shots were fired, leading to a brief skirmish. Following the confrontation at Lexington, the British continued to Concord, where they faced stronger resistance from the colonial militia. The battles resulted in significant British casualties and demonstrated the colonists' willingness to fight for their rights, ultimately fueling the desire for independence from British rule.