The Battle of Brier Creek was an American Revolutionary War battle fought on March 3, 1779, near the confluence of Brier Creek with the Savannah River in eastern Georgia. A mixed Patriot force consisting principally of militia from North Carolina and Georgia along with some Continental regulars was defeated, suffering significant casualties. The rout damaged Patriot morale. Brier Creek thwarted American attempts to force the enemy out of the new state and guaranteed British dominance in the region.The battle occurred only a few weeks after a Patriot victory over a Loyalist militia at Kettle Creek, north of Augusta, reversing its effect on morale. William Moultrie, in his memoirs of the war, wrote that the loss at Brier Creek extended the war by a year and made possible the British invasion of South Carolina in 1780.