The Battle of Marais des Cygnes took place on October 25, 1864 in Linn County. It is also called Battle of Osage and Battle of Trading Post.

Maj. Gen. Sterling Price led an expedition into Missouri which Union forces under Maj. Gen. Samuel R. Curtis and Maj. Gen. Alfred Pleasonton finally countered around Kansas City, Missouri. Price withdrew south, and Pleasonton, commanding in the field, pursued him into Kansas and fought him at Marais des Cygnes. After an artillery bombardment that began at 4:00 am, Pleasonton?s men attacked furiously. Although outnumbered, they hit the Rebel line, forcing them to withdraw.

Result(s): Union victory

Source: NPS[1]