During the Revolutionary War, the Plymouth County militia was led by Colonel Theophilus Cotton of Plymouth. News reached Plymouth of the Battles of Concord and Lexington, and Cotton gathered his soldiers and marched on the town of Marshfield where a small British barracks had been established on the estate of Nathaniel Ray Thomas, known today as the Daniel Webster Estate. Cotton's forces surrounded the British troops, but Cotton determined not to fire, allowing the British to escape by water down the Green Harbor River and back to the security of the British forces occupying Boston.