9 September, 1862: Tuesday

Union - Military/Government
Union Major General Samuel P. Heintzelman is put in command of the defenses of Washington south of the Potomac.

Confederates - Military
Maryland
At Frederick, General Lee issues field orders for future operations. Special Orders No. 191 calls for Stonewall Jackson to march on Harper's Ferry; other troops are to be sent to Crampton's Gap. Much of Longstreet's corps is to go to Boonesborough, and a rear guard is also provided for.

There are skirmishes at Monocacy Church and Barnesville.

Virginia
A small-scale Confederate attack fails at Williamsburg.

Missouri
There is a skirmish at Big Creek.

Tennessee
There is a skirmish at Columbia.

Mississippi
There are skirmishes at Cockrum Cross Roads and Rienzi.

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Bibliography
The Civil War Day By Day: An Almanac 1861-1865. E.B. Long with Barbara Long, De Capo, 1971