Battle Description

The Storming of Fort William and Mary was a bold Patriot raid that occurred months before the official outbreak of the Revolutionary War. On December 14, 1774, local militia led by John Langdon and John Sullivan attacked the British fort at Portsmouth Harbor. The fort was lightly defended, and the Patriots quickly overwhelmed the small garrison.

The following day, a second group returned to seize additional gunpowder and military supplies. These materials were later used by colonial forces during the early stages of the war, including the Siege of Boston.

Outcome

• Outcome: Patriot victory; the fort was captured and its stores of gunpowder and arms were successfully removed.
• Casualties: No reported deaths or injuries.

Significance on the Revolution

This raid was one of the earliest acts of armed resistance against British authority. It demonstrated the growing coordination among colonial militias and their willingness to take direct action. The success of the operation emboldened Patriot leaders and helped supply the colonies with much-needed munitions. It also alarmed British officials, contributing to the escalation of tensions that led to open war in April 1775.