The British military strategy of conducting full frontal assaults failed during the battles of Lexington and Concord.

British forces anticipated swiftly quelling colonial opposition with direct and aggressive strategies. However, they encountered unexpected and resolute resistance from colonial militias, who employed guerrilla warfare tactics and leveraged their familiarity with the local terrain. The colonists' skill in ambushing and disrupting British formations resulted in considerable British casualties and weakened the effectiveness of their conventional approaches. This setback not only impeded the British advance but also strengthened the resolve of the colonists, paving the way for increased resistance and ultimately the Revolutionary War.