...the division of Brig.-Gen. C. P. Stone, composed of six companies of cavalry, three of artillery, and the infantry brigades of Gens. W. A. Gorman and F. W. Lander and Col. E. D. Baker, was located at Poolesville , 8 miles north of east from Leesburg. The object in this disposition of so large a force was, not only to guard the right of the big Federal army that General McClellan was gathering at Washington,...