Rose O'Neal Greenhow, well-known Washington society widow and aunt of Stephen Douglas' wife, passed information to the Confederacy from the start of the war.  Arrested, she was incarcerated with her young daughter in the Old Capitol Prison.  She met with the two-man U.S. Commission Relating to Political Prisoners, made up of an old friend, John Adams Dix and Edwards Pierrepoint, for a hearing in which she was defiant, admitting nothing and giving no information.  She was released a few weeks later on condition she travel to the South and not return.  (By John Osborne)

Units of the Union's Fifth Corps pursuing Major General Thomas J. Jackson attacked and skirmished with the Confederate rearguard, under the command of Turner Ashby.  Colonel George H. Gordon's infantry brigade made a fighting advance into and through the village of Woodstock, Virginia, driving Ashby's measured retreat back as far as Stony Creek near Edinburg, Virginia.  Major General Nathan P. Banks then called a halt and waited at Woodstock for his supply lines to catch up with his hungry and tiring advance units.  (By John Osborne) 

Peninsula Campaign commander George McClellan had wanted Major General Irvin McDowell's First Corps to join his march on Richmond and ordered its embarkation.  President Lincoln, fearing that this would strip thin the defenses of the capital, countermanded McClellan's order, and created two new army departments, the Department of the Rappahannock, with McDowell and his corps, included the District of Columbia, and the Department of the Shenandoah, with the Fifth Corps under Nathaniel Banks, then fighting in the Shenandoah Valley.  (By John Osborne)

The Army of the Potomac was at last on the move and was massing on the Virginia Peninsula for a march on Richmond.  Former general-in-chief General George Brinton McClellan, his sole responsibility now as campaign commander, left Washington, DC and joined his troops at Fort Monroe. His army began to move the following day. (By John Osborne) 

Major General David Hunter arrived at Port Royal in South Carolina to take command of the Union Army's new Department of the South.  He immediately organized his command into three districts.  The Northern District included South Carolina, Georgia, and northern Florida under Brigadier General H.W. Benham.  Brigadier General J.M. Brannan was to command southern Florida and its islands in a Southern District and a Western District under Brigadier General L.G. Arnold included the western Florida panhandle to the Georgia line.  (By John Osborne)