The Thirty-third was organized at Pensacola in April 1862, and proceeded to Corinth just after the battle of Shiloh. Placed in the brigade commanded by Col. Hawthorn of Arkansas, the regiment remained at Tupelo till the Kentucky campaign was entered on. It was part of the brigade of Gen. Wood of Lauderdale, and in Buckner's division, and was present at the capture of Mumfordsville. At Perryville the Thirty-third received its first terrible lesson in the horrors of battle, for it entered that conflict about 500 strong, and came out with 88 rank and file, the others having fallen in the bloody struggle. It came out of Kentucky with the army, and at Murfeesboro the loss of the regiment was comparatively large, for it was in Cleburne's division. The remainder of the winter was spent in camps near Tullahoma, and the regiment retired behind the Tennessee during the summer. In the grand forward movement on the enemy's line at Chicamauga, the Thirty-third suffered very heavily. Gen. M.P. Lowery of Mississippi having relieved Gen. Wood of the command of the brigade - Sixteenth, Thirty-third Mississippi regiments, and Gibson's (Ala.) and Newman's (Tenn.) battalions - the Thirty-third was effectively engaged at Mission Ridge without loss. It was part of the wall of fire that checked the exultant federals at Ringgold Gap, where it lost but one man. The regiment passed the winter at Dalton, and was in the incessant battle from there to Atlanta, fighting during the day and entrenching at night, and losing many by the casualties of battle, particularly at New Hope, and around Atlanta. Having followed Gen. Hood into Tennessee, it moved to the assault of the enemy's works at Franklin, with 285 men, and lost over two-thirds of them, mostly killed. Transferred to North Carolina, the Thirty-third took part in the operations there, and a remnant was there surrendered.
Colonels - Samuel Adams of Butler; wounded at Perryville; killed at Kennesa. Robert F. Crittenden of Coffee; captured at Nashville.
Lieutenant Colonels - Isaac H. Corn of Coffee; resigned. R.F. Crittenden; promoted. James H. Dunklin of Butler.
Majors - R.F. Crittenden; promoted. James H. Dunklin; wounded at Chicamauga; promoted.
Adjutants - John Crosby of Stallworth of Conecuh; died at Tupelo. A.M. Moore of Greene; killed at Chicamauga. Willis J. Milner of Butler.
Butler - James H. Dunklin; promoted. Wm. E. Dodson; killed at Kennesa. Charles S. Linthicum.
Dale - W.E. Cooper; killed by railroad disaster. Charles H. Bryant; wounded at Murfreesboro.
Montgomery - John C. Norman; resigned. Charles Waller; wounded at Murfreesboro; resigned. Joseph Wilson.
Covington - W. N. Brandon.
Dale - W.E. Cooper; killed by railroad disaster. Needham Hughes; captured at Nashville.
Coffee - M.C. Kinney*; wounded at Perryville.
Butler - Thomas G. Pou; resigned. John F. Barganier; resigned. Wm. S. Sims; killed at Chicamauga. John Gamble; wounded at New Hope and Columbus.*This name was misspelled in Brewer's history of the 33rd Infantry Regiment. According ADAH Civil War Service Cards and a descendant of his, the correct name is Mason Creed Kimmey.