Battle of Whitemarsh begins and British forces withdraw, informed by Darragh's warning.
The battle initiated on December 4, 1777, as British forces advanced, only to find the Continental Army prepared. Thanks to Lydia Darragh's intelligence, George Washington's forces engaged the British in skirmishes that lasted several days, ultimately causing the British to withdraw. This enhanced preparedness, attributed to Darragh’s earlier warning, underscores how valuable her covert actions were in shaping the success of the American defense during these crucial days.