Editing George Henry Thomas (section)

===Shiloh and Corinth===
On December 2, 1861, Brig. Gen. Thomas was assigned to command the 1st Division of Maj. Gen. [[Don Carlos Buell]]'s [[Army of the Ohio]]. He missed the [[Battle of Shiloh]] (April 7, 1862), arriving after the fighting had ceased. The victor at Shiloh, Maj. Gen. [[Ulysses S. Grant]], came under severe criticism for the bloody battle due to the surprise and lack of preparations and his superior, Maj. Gen. [[Henry W. Halleck]], reorganized his Department of the Mississippi to ease Grant out of direct field command. The three armies in the department were divided and recombined into three "wings". Thomas, promoted to major general effective April 25, 1862, was given command of the Right Wing, consisting of four divisions from Grant's former [[Army of the Tennessee]] and one from the Army of the Ohio. Thomas successfully led this force in the [[Battle of Corinth I|siege of Corinth]]. On June 10, Grant returned to command of the original Army of the Tennessee.