Brig.-Gen. Bradley T. Johnson, Confederate Military History, a library of Confederate States Military History: Volume 2.1, Maryland
Clement Anselm Evans, Ed.

[52] While the President was pouring troops from Arkansas, from Mississippi, from Alabama, from South Carolina, into Harper's Ferry, Johnston knew that it was a trap, a deadfall, for the soldier who attempted to hold it. It was commanded on the east by the Maryland heights beyond the Potomac, and on the south by heights on the other side of the Shenandoah.

The Confederate States government was then offering every inducement for Maryland to join it. It exempted Maryland from its declaration of war against the United States, and it was tender of her territory and her feelings. When, therefore, Johnston saw the absolute necessity of holding Maryland heights, he saved the invasion of Maryland by sending Marylanders to occupy the position. He ordered Captain Johnson with his eight companies, and Col. Blanton Duncan with his First Kentucky regiment, to take the Maryland heights, fortify and hold them. They did so while Johnston strained every nerve to strip Harper's Ferry of everything that could be made of use to the Confederacy. By June 15th he had cleared out the place, brought the Marylanders and the Kentuckians from the mountains and evacuated Harper's Ferry. A large Federal army had been collected at Chambersburg, Pa., thirty miles to the north of Johnston, under command of Major-General Patterson. For several days Patterson had given signs of restlessness unmistakable to an old soldier of Johnston's caliber, and the very day Johnston moved out of Harper's Ferry, Patterson marched south from Chambersburg. The former moved to Charlestown, Va., the latter to Hagerstown, Md. On June 17th, Patterson crossed the Potomac at Williamsport and Johnston went into line of battle at Bunker Hill, a place halfway between Martinsburg and Winchester. The Confederates were delighted at the prospects of another battle of Bunker Hill on the 17th of June. But a large portion of Patterson's army were sixty-day men, and when their