Union forces defeat Missouri State Guardsmen outside of Fredericktown in Madison County, Missouri
Brigadier General M. Jeff Thompson was leading around 1500 Confederate Missourians on a raid into south eastern Missouri. Withdrawing past Frederickstown and learning that two significant Union columns were pursuing him, he turned and attacked around noon just outside the town. The Union columns outnumbered the Missouri Guard significantly and Thompson's command was driven off during a two hour battle with heavy casualties. The victory began to cement Union control of that part of Missouri. (By John Osborne)
Chronicles of the Great Rebellion Against the United States of America (Philadelphia, PA: A. Winch, 1867), 14.