May 10, 1861
- Nathaniel Lyons [US] takes control of St. Louis to end rioting, seizing Camp Jackson (Confederate militia) and 1200 1855 Springfield Rifles
A Chronological History of the Civil War in America1
- The President, by proclamation, declared martial law upon the island of Key West, the Tortugas, and Santa Rosa, Fla.
- Mob attack upon volunteer Home Guard in St. Louis—seven of the rioters killed.
- Major-Gen. Robert E. Lee placed in command of the rebel forces in Virginia.
- Officers in the Union army ordered to take the oath
of allegiance.
- A Chronological History of the Civil War in America by Richard Swainson Fisher, New York, Johnson and Ward, 1863