The Army of Missouri was an independent military formation during the American Civil War within the Confederate States Army, created in the fall of 1864 under the command of Maj. Gen. Sterling Price to invade Missouri. Price's Raid was unsuccessful, and his army retreated to Arkansas, where it was broken up and absorbed into the Confederate Army of the Trans-Mississippi. After the war, Price, accompanied by his subordinate Brig. Gen. Jo Shelby and several members of his former command, relocated to Mexico where they unsuccessfully sought service with the emperor Maximilian prior to returning to civilian life in the United States.