 The regiment left Vermont for the Department of the Gulf on March 4, 1862, and Thomas commanded it through May 1863, when he assumed command of the 2nd Brigade, 1st Division, XIX Corps, which included the 8th Vermont.During this period, the 8th Vermont participated in the Occupation of New Orleans, and battles at Raceland, Boutte Station, Bayou des Allemands, Bisland, and Port Hudson.In July 1864, a portion of the XIX Corps, including the 8th Vermont, was transferred to the eastern theater of the war.