Banastre Tarleton was thirty miles away and closing fast. Nathanael Greene's main army was somewhere up north, just over the Dan River in Virginia. And Otho Williams, a Maryland colonel with about 700 American light infantry, riflemen, and cavalry, suddenly realized that he could be trapped against Reedy Ford Creek if he did not move now. It was March 6, 1781. Williams and his men were ten miles south of Wetzell's Mill - a crossing on the creek somewhere in Guilford County, North Carolina, where a frontier miller named Wetzell (the spelling drifts across the records: Weitzell, Weitzel, Whitesell, Whitsell, Whitsall) had built his works. The race for that ford would become the Battle of Wetzell's Mill, a tactical British win that produced exactly nothing strategic and bought Greene the time he needed for the showdown coming nine days later.
By early 1781 the war in the South was a chase. After Daniel Morgan's victory over Tarleton at Cowpens in January, General Cornwallis stripped his army of every nonessential and gave chase, hoping to destroy Greene before reinforcements arrived. Greene, smaller and more mobile, kept moving north. Heavy rains swelled the rivers and made them work for him - the Catawba, the Yadkin, finally the Dan, where Greene crossed into Virginia just ahead of Cornwallis on February 14, 1781. The British general stood on the south bank and watched the last American boats reach safety. With his supplies short and his men exhausted, Cornwallis fell back to Hillsborough. Greene resupplied in Virginia, took on militia reinforcements, and recrossed the Dan.
Greene needed time. The militia were untrained, his Continentals were tired, and he wanted more men before he risked a major battle. So he detached Williams with about 700 of his best light troops - Lee's Legion under Henry 'Light Horse Harry' Lee, William Washington's Continental dragoons, hardened Virginia and North Carolina riflemen under Andrew Pickens - and ordered Williams to stay close to the British, harass them, and keep them guessing where the main American army was. Cornwallis countered by sending Tarleton out with about 1,000 men to find Williams. On March 3 Williams's men killed several British sentries and took two prisoners. On March 4 Cornwallis learned Williams's position. On March 6 Tarleton moved fast to catch him before he could withdraw across Reedy Ford Creek.
Tarleton's troopers tried to sneak up at dawn, but Williams's pickets spotted them. A brief skirmish, then both forces broke into a race for the ford ten miles north. Williams kept Lee's cavalry in the rear to cover the withdrawal, won the race, and got his army across. Then he made the only decision he could: he turned around and fought to deny the British the crossing. American riflemen lined the high north bank. Tarleton's first attempt to push across the creek collapsed under their fire. His second push, supported by infantry pressure on the flanks, succeeded. Williams's men disengaged and withdrew - cleanly, in good order, having held off a force half again their size for as long as the ground would allow. Tarleton pursued for a few miles, then gave it up and returned to Cornwallis. The British had won the ford. The Americans had won the day.
Williams rejoined Greene's army, which now had its 2,500 reinforcements. The wait had ended. On March 15, 1781, just nine days after the fight at Wetzell's Mill, Greene chose ground near the Guilford County courthouse and arranged his men in three lines. Cornwallis came on. The Battle of Guilford Courthouse that followed was a tactical British victory but a strategic catastrophe - Cornwallis lost more than a quarter of his army and limped to the coast, eventually marching north into Virginia and the trap of Yorktown. Wetzell's Mill is sometimes treated as a footnote to Guilford Courthouse. It is better understood as its prerequisite. Greene could only afford to fight Cornwallis on his own terms because Williams had bought the days it took to assemble the army that fought there.
The ford itself is gone. Reedy Fork Creek still winds through the Piedmont woods east of Greensboro, and a state historic marker on US-29 near Bessemer notes the battle. There is no preserved battlefield park here, no granite statue of Williams or Tarleton, no annual reenactment. The action survives mostly in the printed memoirs of Henry Lee, who recalled the day with the precise pride of a cavalryman who had ridden hard and lost few men. Most Revolutionary War tourists drive right past Wetzell's Mill on their way to the more famous Guilford Courthouse National Military Park ten miles to the south. They should not. The road to Yorktown ran through this creek crossing first.
Coordinates 36.08 N, 79.79 W, elevation roughly 850 feet, in the rural Piedmont northeast of Greensboro. Reedy Fork Creek winds through hardwood forest east of US-29; the battle site is unmarked but the creek's meander is visible from low altitude. Piedmont Triad International (KGSO/PTI) is 12 nm west-southwest. Burlington-Alamance Regional (KBUY), an uncontrolled field, lies 15 nm east. Class C airspace ringing PTI requires flight following for VFR transit. Greensboro's regional VFR altitude is typically 2,500 feet MSL. Guilford Courthouse National Military Park, where the war's larger battle followed nine days later, sits 8 nm south.