July 26, 1861
- George McClellan appointed commander, Army of the Potomac, replacing Irvin McDowell. Some sources give the date as July 27, the day he received the orders.
A Chronological History of the Civil War in America1
- Union troops drove out the rebels and occupied Forsyth, Mo.
- A Chronological History of the Civil War in America by Richard Swainson Fisher, New York, Johnson and Ward, 1863