Army of the Tennessee
Military unit
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The Army of the Tennessee was a Union army in the Western Theater of the American Civil War, named for the Tennessee River. Wikipedia
Active: 1861–1865
Nickname(s): "The Whip-lash"
Notable commanders: Ulysses S. Grant; William Tecumseh Sherman; James B. McPherson; Oliver O. Howard; John A. Logan; Joseph Hooker