Major General Henry Wager Halleck
-- commanding Army of the Ohio/Army of the Cumberland
-- reporting to Washington command

Major General Braxton Bragg
-- commanding the Western Department including the Army of Mississippi
-- reporting to Richmond command, cooperating with Maj. Gen. Kirby Smith

Major General Don Carlos Buell
-- commanding Army of the Ohio/Army of the Cumberland
-- reporting to Maj. General Henry Wager Halleck

Major General Edmund Kirby Smith
-- commanding Army of East Tennessee
-- reporting to Richmond command, cooperating with Maj. Gen. Braxton Bragg

Brigadier General George Washington Morgan
-- commanding 7th Division, Army of the Ohio
-- reporting to Maj. Gen. Don Carlos Buell
-- lead 7th Division, driving out Rebels from and occupying Cumberland Gap, June, 1862
-- held Cumberland Gap until September 18, 1862, when forced out by siege

Brigadier General Carter Littlepage Stevenson
-- Stevenson's Division
-- 2nd Brigade, 3rd Brigade, 5th Brigade
-- reporting to Maj. Gen. Edward Kirby Smith
-- held Cumberland Gap until June 18, 1862
-- re-occupied Cumberland Gap September 18, 1862; pursued Morgan's retreating force northward
--captured July 4, 1863 at Vicksburg, later exchanged

Brigadier General Samuel Perry Powhatan Carter
-- commanding 24th Brigade, 7th Division, Army of the Ohio
49th Indiana, 7th (f. 3rd) Kentucky, 1st Tennessee, 2nd Tennessee
-- reporting to Brig. Gen. George W. Morgan

Colonel James Edward Rains
-- commanding 2nd Brigade, Stevenson's Division
-- reporting to Brigadier General Carter Littlepage Stevenson
-- commanded garrison (2nd Brigade) at Cumberland Gap until June 18, 1862
-- breveted Brig. General but killed at Battle of Stones River, December 31, 1862

Brigadier General James Gallant Spears
-- commanding 25th Brigade, 7th Division, Army of the Ohio
-- 3rd Tennessee, 4th Tennessee, 5th Tennessee, 6th Tennessee
-- reporting to Brig. Gen. George W. Morgan

Brigadier General Seth Maxwell Barton
-- commanding 3rd or 4th Brigade, Stevenson's Division
-- reporting to Brigadier General Carter Littlepage Stevenson
--captured July 4, 1863 at Vicksburg, later exchanged

Col. John Fitzroy DeCourcy (Brevet Brigadier General)
-- commanding 26th Brigade, 7th Division, Army of the Ohio
-- 16th Ohio, 42nd Ohio, 22nd Kentucky
-- reporting to Brig. Gen. George W. Morgan

Col. Thomas Hart Taylor, 1st. Kentucky Infantry
-- commanding 5th Brigade, Stevenson's Division
-- reporting to Brigadier General Carter Littlepage Stevenson
--captured July 4, 1863 at Vicksburg, later exchanged

Brig. Gen. Absalom Baird
-- commanding 27th Brigade, 7th Division, Army of the Ohio
-- 14th Kentucky, 19th Kentucky, 33rd Indiana,
-- reporting to Brig. Gen. George W. Morgan

Artillery units assigned to 7th Division, Army of the Ohio:
Capt. Jacob T. Foster (no photo available)
-- commanding 1st Wisconsin Battery; chief artillery officer
Capt. Charles H. Lanphere (no photo available)
-- commanding 7th Michigan Battery
Capt. Henry Shepard Wetmore (no photo available)
-- commanding 9th Ohio Battery