ght upon what it was that detained the two brigades under Robertson in Virginia until July 1st, when they crossed the river at Williamsport.
The Army of the Potomac had been withdrawn from Loudoun—the last of the cavalry crossing the river on the 27th, and the positions taken up that night.
General Jones, commanding one of the brigades, takes up his report on the 29th, with his command at Snickersville, Loudoun county.
There were no reports from the other brigade, and it appears there were nttle obstacle likely to be afforded by the militia to our progress, I had determined, if I could get possession of the Columbia bridge, to cross my division over the Susquehannah.
General Ewell reached Carlisle on the 27th, and writes (p. 443): From Carlisle I sent forward my engineer, Captain H. B. Richardson, with Jenkins' cavalry, to reconnoitre the defences of Harrisburg and was starting on the 29th for that place, when ordered by the General commanding to join