Battle of Leesburg [CS]
Battle of Ball's Bluff [US]
Battle of Harrison Island [US]
General Nathan Evans [CS] defeats General Charles Stone [US]. Oregon Senator Edward Baker, field commander, becomes the first (and only) sitting senator to die in battle.
Ulysses S. Grant leaves Bridgeport, AL to assume command of the troops in Chattanooga. The only road in a muddy wash with a horrible stench from the dead mules lying on either side. This was the road Rosecrans was using to supply his troops.