The Battle of Westport, sometimes referred to as the "Gettysburg of the West", was fought on October 23, 1864, in modern Kansas City, Missouri, during the American Civil War. Union forces under Major General Samuel R. Curtis decisively defeated an outnumbered Confederate force under Major General Sterling Price. This engagement was the turning point of Price's Missouri Expedition, forcing his army to retreat. The battle ended the last major Confederate offensive west of the Mississippi River, and for the remainder of the war the United States Army maintained solid control over most of Missouri. This battle was one of the largest to be fought west of the Mississippi River, with over 30,000 men engaged. Westport Westport (now a part of Kansas City, Missouri) had already established its place in history by the time Union and Confederate forces clashed there in 1864. John Calvin McCoy, known as the "Father of Kansas City", had laid out the town, and pioneers traveling along the Oregon, California and Santa Fe Trails all passed through it on their way West. Westport gradually replaced nearby Independence as the "jumping-off point" for the Westward trails, contributing to the growth of the town. During the Civil War, nearby Kansas City (known then as the Town of Kansas) served as headquarters for the Federal "District of the Border" and was garrisoned by a sizable contingent of Union troops. While its own municipal star was beginning to fade in favor of its northern neighbor, Westport was still of some importance in the region. As it turned out, however, the decision to fight here would be the result of a chain of events that had little to do with any strategic importance attached to the town itself. Price's Raid begins In September 1864, Sterling Price led his Army of Missouri into Missouri, with the hope of capturing the state for the South and turning the Northern people against Abraham Lincoln in the presidential election of 1864. Major General William S. Rosecrans, commanding the Federal Department of the Missouri, began assembling troops to repel the invasion. Rosecrans's cavalry under Major General Alfred Pleasonton set out in pursuit of Price's force, accompanied by a large detachment of infantry from the Army of the Tennessee under Andrew J. Smith. After his defeat at the Battle of Ft. Davidson, Price realized that St. Louis was far too heavily fortified for his rather small force (12,000