Монокаси
On the morning of October 12, scouts reported to Stuart that Union Brigadier General George Stoneman was guarding the Potomac River fords near Poolesville, Maryland with several thousand men. On the of the Potomac River from the mouth of the Monocacy River to Edwards Ferry, which is near Poolesville, at least four crossings were available. Stuart followed the recommendation of Captain White, who was from the local area, to avoid Stoneman's likely position by using White's Ford, which was below the mouth of the Monocacy River near present-day White's Ferry and little used as it was a rough crossing, to cross the Potomac to Loudoun County, Virginia.