of the Mississippi. McClernand was successful in capturing Arkansas Post. Maj. Gen. Ulysses S. Grant did not like McClernand and after Sherman and Admiral Andrew H. Foote both voiced their opinions that McClernand was unfit to command, Grant personally took command of the expedition against Vicksburg and the old XIII Corps and XV Corps were returned to the Army of the Tennessee on January 12, 1863. Command history 1862 1863 References Eicher, John H., & Eicher, David J., Civil War High Commands, Stanford University Press, 2001, . External links Army Organization during the Civil War Army of the Mississippi Mississippi, Army of the Missouri in the American Civil War Mississippi in the American Civil War Arkansas in the American Civil War 1862 establishments in the United States Military units and formations established in 1862 Military units and formations disestablished in 1863 1863 disestablishments in the United States