In July, 1780, all officers and men of the South Carolina Line not in the hands of the enemy or on parole were directed to report to General Gates' headquarters at Hillsboro, N. C. In accordance therewith Horry reported to Gates, but as he was without a command, Gates assigned him to duty with the militia of South Carolina. After the appointment of Lieutenant-Colonel Francis Marion, another officer of the South Carolina Line without a command—his regiment having been captured at the Fall of Charleston while he was on furlough—to be brigadier general of the lower brigade of the militia of South Carolina by Governor Rutledge, Horry became colonel of one of the militia regiments under Marion. Horry County, South Carolina, is named for him.