Intelligence was pivotal in the events of April 19, 1775, as it alerted the colonists to prepare for the British advance.

Before the battles of Lexington and Concord, local informant networks, including riders such as Paul Revere and William Dawes, played a vital role in relaying information about British troop movements and plans. Their alerts allowed colonial militias to swiftly mobilize and strategically position themselves for engagement. This prompt intelligence was essential for organizing resistance, enabling the colonists to foresee British actions and respond resolutely. The successful use of intelligence not only aided their early victories but also helped cultivate a sense of unity among the colonies.