Price's army left northeastern Arkansas on Friday, September 16, 1864. Advancing into Missouri, they chose to attack the Union garrison located at
Ft. Davidson near
Pilot Knob, where Price lost more than 1000 men and invaluable time engaging a target of little real significance. Unable to continue on toward St. Louis due to heavy Union reinforcement, Price turned west toward Jefferson City. Sharp skirmishes there convinced him that the capital could not be taken either, so Price continued further west toward
Kansas City and nearby
Fort Leavenworth, Kansas. Minor clashes ensued between Price's force and Union elements at
Boonville and
Glasgow, and between one of Price's brigades and Unionist militia at
Sedalia. All resulted in Confederate victories. As he made his way west, Price acquired an ever-expanding
wagon train loaded down with looted and captured property and
materiel, as well a large herd of
horses and
cattle. The presence of this cavalcade increasingly limited Price's tactical options, and it ultimately became what modern
U.S. Army Major Dale Davis describes in his study of Price's Raid as "an
albatross to [his] withdrawal" following his defeat at Westport (see below). , 1864 , USA Union forces in Missouri, under the command of Maj. Gen.
Samuel R. Curtis, were rapidly organizing to oppose Price's incursion. Curtis organized
militia units in Missouri and
Kansas, together with regular infantry and cavalry units, into the
Army of the Border, which contained about 35,000 men in all. Meanwhile, Price's force was being steadily eroded by desertions, losses and disease; by the time of the pivotal
Battle of Westport, it only numbered 8,500. In addition to dealing with Unionist militia and Curtis' force Price was also being pursued by Union Cavalry under Maj. Gen.
Alfred Pleasonton, nominally under Curtis' command, but operating independently of Curtis' main element. Price's first true test against this new Union force came at
Lexington, where he drove elements of Curtis' army back toward the
Little Blue River and the nearby city of
Independence. Further triumphs at those two locations positioned Price's army near
Westport, where Curtis' main army lay. Pleasanton finally caught up with Price at Independence, pinching the Army of Missouri between two Federal armies, each of which was larger than Price's own force. This brought on the
Battle of Westport, also referred to as the "Gettysburg of the West", which saw Price's complete defeat and forced him to retreat southward through Kansas toward the
Indian Territory (modern
Oklahoma). Further defeats at the
Marais des Cygnes River,
Mine Creek, the
Marmiton River and
Newtonia followed, forcing Price to retreat all the way into
Arkansas and eastern
Texas (to avoid additional Federal troops at
Fort Smith, Arkansas). The remnants of Price's weary army finally returned to Arkansas on December 2, having lost about 6,000 men. The Army of Missouri officially ceased to exist when these men were subsequently absorbed into the Army of the Trans-Mississippi where Price commanded its Cavalry Corps from December 3, 1864, to March 12, 1865. ==On to Mexico==