The Battle of Mine Creek, also known as the Battle of the Osage, was fought on October 25, 1864, in Linn County, Kansas as part of Price's Missouri Expedition during the American Civil War. Major General Sterling Price of the Confederate States Army had begun an expedition in September 1864 to restore Confederate control of Missouri. After being defeated at the Battle of Westport near Kansas City, Missouri on October 23, Price's army began to retreat south through Kansas. Early on October 25, Price's army was defeated at the Battle of Marais des Cygnes. After Marais des Cygnes, the Confederates fell back, but were stalled at the crossing of Mine Creek while a wagon train attempted to cross.