The Amercian CW Research Database show tthese assignments:
Department of the Gulf, Sep '63-Feb '64, Clanton's Brigade
Department of Alabama, Mississippi and East Louisiana, Mar '64 -May 64' Scott's Brigade, Loring's Divison
Army of the Mississippi, May '64 - Jul '64; Scott's Brigade, Loring's Divison
Army of Tennessee, Jul '64 - Apr '65 Scott's Brigade, Loring's Divison
John G. Johnson, Private, Company K, 57th Alabama was captured at Resaca, Georgia May 19, 1864.
W J. Leonard, Private, was wounded 5/16/1864 (Severely wounded in leg, amputated) [place not stated, perhaps at Calhoun]
THE FIFTY-SEVENTH ALABAMA INFANTRY
The Fifty-seventh regiment was organized at Troy, March, 1863,
as part of Clanton's brigade; was temporarily attached to
Slaughter's brigade, and in September was again with General
Clanton.
It was on duty at Mobile and Pollard until January, 1864.
Moved to Demopolis, it was attached to Scott's brigade, and
joined the army of Tennessee in time to share in the perils and
hardships of the Dalton-Atlanta campaign; was in numerous
battles and skirmishes, but did not suffer greatly until
Peachtree Creek, when the regiment was severely cut up, losing
almost half its number.
It then moved into Tennessee and lost heavily; at the battles
of Franklin and Nashville; was transferred to North Carolina,
and fought at Bentonville with severe loss.
It was consolidated with the Twenty-seventh, Thirty-fifth,
Forty-ninth and Fifty-fifth regiments, under the command of
Colonel McAlexander, and surrendered with Johnston's army at
the close of the war.
Col. J. P. W. Amerine, its first colonel, was succeeded by Col.
C. J. L. Cunningham, who led the regiment for the greater part
of the war, after December, 1863; he was wounded at Franklin
Lieut.-Col. W. C. Bethune, Capt. A. L. Mulligan, Maj. J. H.
Wiley and Capt. R. H. Lane were at different times in command.
Lieut.-Col. Bethune and Captain Faison were wounded at
Peachtree Creek; Major Arnold and Capt. Bailey M. Talbot were
killed there.
Source: Confederate Military History, vol. VIII, p. 219