Great Britain's "southern strategy" for winning the
American Revolutionary War appeared in some ways to be going well after the
Battle of Guilford Courthouse in March 1781. General
Lord Cornwallis had defeated General
Nathanael Greene, but his army was short on supplies and had suffered significant casualties, so he decided to move to
Wilmington, North Carolina to resupply and refit his troops. Greene, while he had lost the battlefield, still had his army intact. After shadowing Cornwallis for a time, he turned south, and embarked on an expedition to recover Patriot control of
South Carolina and
Georgia, where British and
Loyalist forces were thinly distributed, and smaller outposts were subject to attack from larger forces under the command of Greene or one of the Patriot militia commanders in the area. He first ordered Colonel
Henry "Light Horse Harry" Lee to continue shadowing Cornwallis so that his southward movement was screened. Once he was on his way into South Carolina, he ordered Lee to abandon Cornwallis and instead join forces with militia Colonel
Francis Marion in the eastern part of the state. Lee and Marion met on April 14, and first targeted Fort Watson, a small
stockaded fort on the east side of the
Santee River, which fell after
a short siege. They chased after John Watson, the fort's usual commander, who had led a force away from it in search of Marion, but was forced onto the defensive when Lee arrived. Lee and Marion then targeted Fort Motte, a key British supply depot and communication point not far from the confluence of the
Congaree and
Wateree Rivers. The British had taken over Mount Joseph Plantation, owned by Miles Brewton and then occupied by his sister, the widowed
Rebecca Brewton Motte and her children, who had left the city of Charleston. The British fortified the area around the mansion, building palisades, ramparts, trenches and abatis. They garrisoned a force of roughly 175, made up of British soldiers,
Hessians, and Provincials under Lieutenant Daniel McPherson at the fort. ==Siege==