United States. Army. Iron Brigade (1861-1865)
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The Iron Brigade, also known as The Black Hats, Black Hat Brigade, Iron Brigade of the West, and originally King's Wisconsin Brigade was an infantry brigade in the Union Army of the Potomac during the American Civil War that fought entirely in the Eastern Theater in the battles of Second Bull Run, Antietam, Fredericksburg, Chancellorsville, Gettysburg, Mine Run, Overland, Richmond-Petersburg, and Appomattox.
The Iron Brigade initially consisted of the 2nd, 6th, and 7th Wisconsin Volunteer Infantry Regiments, the 19th Indiana, Battery B of the 4th U.S. Light Artillery, and was later joined by the 24th Michigan. This particular composition of men, from the three Western states, led it to be sometimes referred to as the "Iron Brigade of the West". They were known throughout the war as the "Black Hats" because of the black 1858 model Hardee hats issued to Army regulars, rather than the blue kepis worn by most other Union Army units. Noted for its strong discipline, its unique uniform appearance and its tenacious fighting ability, the Iron Brigade suffered the highest percentage of casualties of any brigade in the war.
The unit that eventually became known as the Iron Brigade was activated on October 1, 1861, upon the arrival in Washington, D.C., of the 7th Wisconsin. It was combined into a brigade with the 2nd and 6th Wisconsin, and the 19th Indiana, under the command of Brig. Gen. Rufus King and were originally known as King's Wisconsin Brigade. The governor of Wisconsin, Alexander Randall, had hoped to see the formation of an entirely Wisconsin brigade, but the Army unwittingly frustrated his plans by transferring the 5th Wisconsin from King's brigade and including the Hoosiers instead. This brigade was initially designated the 3rd Brigade of Maj. Gen. Irvin McDowell's division of the Army of the Potomac, and then the 3rd Brigade, I Corps. McDowell's I Corps did not join the bulk of the Army of the Potomac in the Peninsula Campaign. In June 1862 it was redesignated the III Corps of Maj. Gen. John Pope's Army of Virginia. Now under the command of John Gibbon, a regular Army officer from North Carolina who chose to stay with the Union, King's brigade was designated the 4th Brigade, 1st Division, III Corps, and it saw its first combat in the Northern Virginia Campaign. Almost immediately following the Union defeat in the Second Battle of Bull Run, the III Corps was transferred back to the Army of the Potomac and redesignated the I Corps, under the command of Joseph Hooker; Gibbon's brigade became the 4th Brigade, 1st Division, I Corps.
The all-Western brigade, composed of Wisconsin, Michigan and Indiana troops, earned their famous nickname, while under the command of Brig. Gen. John Gibbon, who led the brigade into its first battle. On August 28, 1862, during the preliminary phases of the Second Battle of Bull Run, it stood up against attacks from a superior force under Maj. Gen Thomas J. "Stonewall" Jackson on the Brawner farm. The designation "Iron Brigade" is said to have originated during the brigade's action at Turners Gap, during the Battle of South Mountain, a prelude to the Battle of Antietam in September 1862. Maj. Gen. Joseph Hooker, commanding I Corps, approached Army of the Potomac commander Maj. Gen. George B. McClellan, seeking orders. As the Western men advanced up the National Road, forcing the Confederate line all the way back to the gap, McClellan asked, "What troops are those fighting in the Pike?" Hooker replied, "[Brigadier] General Gibbon's brigade of Western men." McClellan stated, "They must be made of iron." Hooker said that the brigade had performed even more superbly at Second Bull Run; to this, McClellan said that the brigade consisted of the "best troops in the world". Hooker supposedly was elated and rode off without his orders. There are a few stories related to the origin, but the men immediately adopted the name, which was quickly used in print after South Mountain.
The 24th Michigan Volunteer Infantry Regiment joined the brigade on October 8, 1862, prior to the Battle of Fredericksburg in December. On February 27, 1863, the brigade, now under the command of Brig. Gen. Solomon Meredith, was redesignated the 1st Brigade, 1st Division, I Corps. The brigade took pride in its designation, "1st Brigade, 1st Division, I Corps", under which it played a prominent role in the first day of the Battle of Gettysburg, July 1, 1863. It repulsed the first Confederate offensive through Herbst's Woods, capturing much of Brig. Gen. James J. Archer's brigade, and Archer himself. The 6th Wisconsin (along with 100 men of the brigade guard) are remembered for their famous charge on an unfinished railroad cut north and west of the town, where they captured the flag of the 2nd Mississippi and took hundreds of Confederate prisoners.[5] The Brigade survivors defended the north slope of Culp’s Hill on July 2,3, where the 6th Wisconsin made a night counterattack to restore Union positions previously lost to Confederate troops.
The brigade commanders, disregarding temporary assignments, were: Brig. Gen. Rufus King: September 28, 1861 – May 7, 1862; Brig. Gen. John Gibbon: May 7, 1862 – November 4, 1862; and Brig. Gen. Solomon Meredith: November 25, 1862 – July 1, 1863 (wounded at Gettysburg).
The Iron Brigade lost its all-Western status on July 16, 1863, following its crippling losses at Gettysburg, when the 167th Pennsylvania was incorporated into it. However, the brigade that succeeded it, which included the survivors of the Iron Brigade, was commanded by: Col. William W. Robinson (of the 7th Wisconsin): July 1, 1863 – March 25, 1864; Brig. Gen. Lysander Cutler (6th Wisconsin): March 25, 1864 – May 6, 1864; Col. William W. Robinson: May 6, 1864 – June 7, 1864; Brig. Gen. Edward S. Bragg (6th Wisconsin): June 7, 1864 – February 10, 1865; Col. John A. Kellogg (6th Wisconsin): February 28, 1865 – April 27, 1865; and Col. Henry A. Morrow (24th Michigan): April 27, 1865 – June 5, 1865.
In June 1865, the units of the surviving brigade were separated and reassigned to the Army of the Tennessee.
The last surviving member of the Iron Brigade, Josiah E. Cass of Eau Claire, Wisconsin, died on 2 December 1947; he was 100 years old.
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