...d the end of June, I went up to Hagerstown to see him. I found that army in the very act of moving, and we rode down to Williamsport in a buggy, and were present when the leading division crossed the Potomac River by fording it waist-deep. My friend and classmate, George H. Thomas, was there, in command of a brigade in the leading division. I talked with him a good deal, also with General Cadwalader, and w...