burg,
Miss., July, 1863, as the 12th Regiment Louisiana Volunteers; changed to
50th Regiment U. S., March, 1864. Battle: Fort Blakely. Mustered out
March, 1866.

51st Regiment, Colonel A. Watson Webber.--Organized at Miliken's Bend,
La., and Vicksburg, Miss., May, 1863, as the 1st Regiment Mississippi
Volunteers; changed to 51st Regiment U. S., March, 1864. Battles:
Miliken's Bend, Ross Landing, Floyd, Fort Blakely. Mustered out June,
1866.

52d Regiment, Colonel George M. Ziegler.--Organized at Vicksburg, Miss.,
July 27th, 1863, as the 2d Regiment Mississippi Volunteers; changed to
52d Regiment U. S., March, 1864. Battles: Vicksburg, Coleman's
Plantation, Bayou Bidell. Mustered out May, 1866.

53d Regiment, Colonel Orlando C. Risdon.--Organized at Warrentown,
Miss., May, 1863, as the 3d Regiment Mississippi Volunteers; changed to
53d Regiment U. S., March, 1864. Battles: Haines' Bluff, Grand Gull,
White River. Mustered out March, 1866.

54th Regiment, Lieutenant-Colonel Charles Fair.--Organized in Arkansas
September, 1863, as the 2d Regiment Arkansas Volunteers; changed to 54th
Regiment U. S., March, 1864. Battles: Cow Creek, Arkansas River, Sabine
River, Fort Gibson, Cabin Creek. Mustered out August, 1866.

54th Regiment Massachusetts Volunteers, Colonel E. N.
Hallowell.--Organized at Camp Meigs, Readville, Mass., March, 1863.
Battles: James Island, Fort Wagner, Olustee, Honey Hill, Boykin's Mill,
before Charleston. Mustered out August, 1865.

55th Regiment, Colonel N. B. Bartman.--Organized at Corinth, Miss., May,
1863, as the 1st Regiment Alabama Volunteers; changed to 55th Regiment
U. S., 1864. Battles: Ripley, Brice's Cross Roads, Moscow, Waterford.
Mustered out December, 1865.

55th Regiment Massachusetts Volunteers, Colonel Alfred S.
Hartwell.--Organized at Camp Meigs, Readville, Mass., May, 1863.
Battles: James Island, May 21st, July 2d, 1864, February 10th, 1865,
Honey Hill, Briggen Creek, St. Stephens, Deveaux Neck. Mustered out
August, 1865.

56th Regiment, Colonel Charles Bentzoni, (regular army). Organized at
St. Louis, Mo., August, 1863, as the 3d Regiment Arkansas Volunteers;
changed to 56th Regiment U. S., March, 1854. Battles: Indian Bay,
Meffleton Lodge, Wallace's Ferry. Mustered out September, 1866.

57th Regiment, Lieutenant-Colonel Silas Hunter.--Organized at Duvall's
Bluff, Little Rock. Helena, Ark., December, 1863, as the 4th Regiment
Arkansas Volunteers, changed to 57th Regiment U. S