...tially and Drayton hotly engaged. . . . Three brigades moved up in beautiful order against Drayton and the men were soon beaten. This is the only reference to Drayton's brigade in the action at Boonsboro , by which it appears that the Fifteenth South Carolina, and Fiftieth and Fifty-first Georgia, the three regiments that composed it, stood against the attack of three Union brigades until they were be...