During the war, the following promotions were made by the United States Government from Iowa regiments:*

MAJOR GENERALS

Samuel R. Curtis, Brigadier General, from March 21, 1862.
Frederick Steele, Brigadier General, from November 29, 1862.
Frank J. Herron, Brigadier General, from November 29, 1862.
Grenville M. Dodge, Brigadier General, from June 7, 1864.

BRIGADIER GENERALS.

Samuel R. Curtis, Colonel 2d Infantry, from May 17, 1861.
Frederick Steele, Colonel 8th Infantry, from February 6, 1862.
Jacob G. Lauman, Colonel 7th Infantry, from March 21, 1862.
Grenville M. Dodge, Colonel 4th Infantry, from March 31, 1862.
James M. Tuttle, Colonel 2d Infantry, from June 9, 1862.
Washington L. Elliott, Colonel 2d Cavalry, from June 11, 1862.
Fitz Henry Warren, Colonel 1st Cavalry, from July 6, 1862.

Frank J. Herron, Lieutenant Colonel 9th Infantry, from July 30, 1862.
Charles L. Matthies, Colonel 5th Infantry, from November 29, 1862.

William Vandever, Colonel 9th Infantry, from November 29, 1862.

Marcellus M. Crocker, Colonel 13th Infantry, from Nov. 29, 1862. (Since died.)
Hugh T. Reid, Colonel 15th Infantry from March 13, 1863.
Samuel A. Rice, Colonel 33d Infantry, from August 4, 1863.
John M. Corse, Colonel 6th Infantry, from August 11, 1863.
Cyrus Bussey, Colonel 3d Cavalry, from January 5, 1864.
Edward Hatch, Colonel 2d Cavalry, from April 27, 1864.
Elliott W. Rice, Colonel 7th Infantry, from June 20, 1864.
Wm. W. Belknap, Colonel 15th Infantry, from July 30, 1864.
John Edwards, Colonel 18th Infantry, from September 26, 1864.
James A. Williamson, Colonel 4th Infantry, from January 13, 1864.
James I. Gilbert, Colonel 27th Infantry, from February 9, 1865.

BREVET MAJOR GENERALS.

John M. Corse, Brigadier General from October 5, 1864.
Edward Hatch, Brigadier General, from December 15, 1864.
Wm. W. Belknap, Brigadier General, from March 13, 1865.
W. L. Elliott, Brigadier General, from March 13, 1865.
Wm. Vandever, Brigadier General, from June 7, 1865.

BREVET BRIGADIER GENERALS.

Wm. T. Clark, A. A. G., late of 13th Infantry, from July 22, 1864.
Edward F. Winslow, Colonel 4th Cavalry, from December 12, 1864.
S. G. Hill, Colonel 35th Infantry, from December 15, 1864. (Since died.)
Thos. H. Benton, Colonel 29th Infantry, from December 15, 1864.
Samuel L. Glasgow, Colonel 23d Infantry, from December 19, 1864.
Clark R. Wever, Colonel 17th Infantry, from February 9, 1865.

Francis M. Drake, Lieutenant Colonel 36th Infantry, from February 22, 1865.
George A. Stone, Colonel 25th Infantry, from March 13, 1865.
Datus E. Coon, Colonel 2d Cavalry, from March 8, 1865.
George W. Clark, Colonel 34th Infantry, from March 13, 1865.
Herman H. Heath, Colonel 7th Cavalry, from March 13, 1865.
J. M. Hedrick, Colonel 15th Infantry, from March 13, 1865.
W. W. Lowe, Colonel 5th Cavalry, from March 13, 1865.

*Thomas J. McKean was appointed Paymaster in U. S. A. from Iowa, and subsequently promoted Brigadier General, to date from Nov. 21, 1861.