Walker's Greyhounds, also known as Walker's Texas Division, was mustered at Camp Nelson, Arkansas, in July 1862. It was placed under the command of Maj. Gen. John George Walker in November 1862, and remained under his command until the end of the war. The division served exclusively in the Trans-Mississippi Department. When General Walker was given a district command in late 1864 the division was given to Maj. Gen. John H. Forney.