The following information regarding the commands that the 27th Iowa served under was compiled from the Dyers Compendium of the Civil War, and the The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies.
| Oct. 3, 1862
Oct 11, 1862 |
Organized at Dubuque and mustered in October 3, 1862.
Moved to St. Paul, Minn., October 11, 1862, |
| Oct. 17 1862
Nov 4, 1862 |
Companies A, B, C, E, F and G. Moved to Mille Lac's, Minn., October 17,
thence moved to Cairo, Ill., November 4. |
| Nov. 1, 1862 | Companies D, I, H and K at Fort Snelling, Minn., till November 1.
Moved to Cairo, Ill., November 1 |
| Nov. 20, 1862
Dec. 1862 |
Regiment moved to Memphis, Tenn., November 20. Attached to
District of Memphis, Dept. Tennessee, to December, 1862, |
| Dec. 18, 1862
Mar. 18, 1863 |
District of Jackson, Tenn., 16th Army Corps, Army Tennessee |
| Mar. 18, 1863
Aug. 1863 |
3rd Brigade, 3rd Division, 16th Army Corps |
| Aug. 1863
Nov. 1863 |
True's Brigade, Arkansas Expedition |
| Nov. 22, 1863
Jan. 26, 1864 |
Gilbert's Brigade, District of Memphis, 5th Division, 16th Corps |
| Jan 1864
Dec. 1864 |
2nd Brigade, 3rd Division, 16th Army Corps |
| Dec. 1864 | 2nd Brigade, 2nd Division, Right Wing 16th Army Corps. |
| Dec. 1864
Feb. 1865 |
2nd Brigade, 2nd Division (Detachment), Army Tennessee,
Dept. of the Cumberland |
| Feb. 1865
Aug. 1865 |
2nd Brigade, 2nd Division, 16th Army Corps,
Military Division West Mississippi |
District of Jackson, Tenn., 16th Army Corps
Army Tennessee
December 18, 1862 to March 18, 1863.Designated
Third Division, Sixteenth Army Corps.
March 18, 1863
Headquarters and Third and Cavalry Brigades at Jackson,
the First Brigade at Bolivar, and
the Second (organized April 18) at Corinth.
Brig. Gen J.C. Sullivan
First Brigade
Brig. Gen. Mason Brayman43 Illinois, Col. Adolph Engelmann
61st Illinois, Maj. Simon P. Ohr
106th Illinois, Col. Robert B. Latham
12 Michaigan, Col. William H. Graves
Illinois Light Artillery, Independent Battery, Capt. Thomas. F. Vaughn
Second Brigade
Col. Michael K. Lawler* 18th Illinois, Lieut. Co. Daniel H. Brush
54th Illinois, Col. Greenville M. Mitchell
*126th Illinois, Lieut. Col. Ezra M. Beardsley
22nd Ohio, Col. Oliver Wood.* At Jackson, under command of Col. Johathan Richmond.
Third Brigade
Col. James M. True62d Illinois, Lieut. Col. Daniel B. Robinson
50th Indiana, Lieut. Col. Samuel T. Wells
27th Iowa, Col. James I. Gilbert
1st West Tennessee, Lieut. Col. William T. Wilson
Cavalry Brigade
Col. John K. Mizner11th Illinois (eight companies), Lieut. Co. Bazil D. Meek
3d Michigan, Lieut. Col. Gilbert Moyers
6th Tennessee, Col. Fielding Hurst.
Artillery
Capt. Meredith H. Kidd14th Indiana Batter, Lieut, Francis W. Morse
14th Ohio Battery, Capt, Jerome B. Burrows
7th Wisconsin Battery, Lieut, Galen E. Green
3rd Brigade, 3rd Division, 16th Army Corps
March 18, 1863 to August, 1863.Headquarters at La Grange, Tenn;
Remainder of the division serving in the Vicksburg campaign.
Col. James M. True (62 Ill. Inf.) (March 18, 1863 to July 19, 1863)
Col. James I. Gilbert (27th Iowa Inf.) (July 19, 1863 to August 1863)49th Illinois, Maj. Thomas W. Morgan
62d Illinois, Maj. Stepehn M. Mecker
50th Indiana, Lieut. Col. Samuel T. Wells
27th Iowa, Col. James I. Gilbert
3d Illinois Light Artillery, Battery A, Capt. Thomas F. Vaughn
14th Indiana Battery, Capt. Meredith H. Kidd.
True's Brigade, Arkansas Expedition
August 1863 to November, 1863.Third Brigade, Third Division, Sixteenth Army Corps en route from Helena,
and not accounted for on the original returns till Sept. 10.
Col. James M. True (62d Ill. Infantry)
49th Illinois, Col. Phinease Pease
62d Illinois, Lieut. Col. Stephen M. Meeker
50th Indiana, Lieut. Col. Samuel T. Wells
27th Iowa, Col. James I. Gilbert
Vaughn's (Illinois) Battery, Capt. Thomas F. Vaughn
Gilbert's Brigade, District of Memphis, 5th Division, 16th Corps
Assigned Nov. 22, 1863.
Transferred to 3-Div, 16-Army Corps,
Jan. 25, 1864
Col. James I. Gilbert
49th Illinois, Lieut. Col. William W. Bishop
27th Iowa, Maj. George W. Howard
2nd Brigade, 3rd Division, 16th Army Corps,
January 1864 to December, 1864.Detachment Army Tennessee -- Joined from Army Tenn
For Red River CampaignMajor Gen. Andrew J. Smith
Brig. General J. A. Mower
First Brigade
Co. David Moore58th Illinois, Col. William F. Lynch
119th Illinois, Col. Thomas J. Kinney
89th Indiana, Col. Charles D. Murray
21st Missouri, Major Edwin Moore
Second Brigade
Col. William T. Shaw14th Iowa, Lieut. Col. Joseph H. Newbold
27th Iowa, Col. James I. Gilbert
32d Iowa. Col. John Scott
24th Missouri, Col. James K. Mills
Third Brigade
Col. Edward H. Wolfe
Col. Risdon M. Moore *49th Illinois, Lieut. Col. William W. Bishop
117th Illinois, Col. Risdon M. Moore; Lieut. Col. Jonathan Merriam
52 Indiana, Maj. William T. Strickland
178th New York, Col. Edward Wehler
Artillery
Capt. James M. CockefairIndiana Light, 3d Battery, Lieut. Thomas J. Ginn
Indiana Light, 9th Battery, Capt. George R. Brown
Indiana Light, 14th Battery, Lieut, Francis W. Morse
2nd Brigade, 3rd Division
Right Wing 16th Army Corps, Army Tenn.
Designated Detachment Army Tenn., Dec. 5, 1864Maj. Gen. Andrew J. Smith
Col. David Moore
Commanding 3rd Division
First Brigade
Col. Thomas J. Kinney119th Illinois, Lieut. Col. Samuel Taylor
122d Illinois, Lieut. Col. James F. Drish
89th Indiana, Lieut. Col. Hervey Craven
21st Missouri, Lieut. Col. Edwin Moore
Indiana Light Artillery, 9th Battery, Lieut, Samuel G. Calfee
Second Brigade
Col. James I. Gilbert58th Illinois, Maj. Robert W. Healy
27th Iowa, Maj. George W. Howard
32d Iowa, Lieut. Col. Gustavus A. Eberhart
Indiana Light Artillery, 3d Battery, Lieut. Thomas J. Ginn
Third Brigade
Col. Edward H. Wolfe49th Illinois, Col. Phineas Pease
117th Illinois, Lieut Col. Jonathan Merriam
52d Indiana Lieut. Col. Zalmon S. Main
178th New York, Capt. John B. Gandolfo
2d Illinois Light Artillery, Battery G, Capt. John W. Lowell
2nd Brigade, 2nd Division (Detachment)
Army Tennessee, Dept. of the Cumberland
December 1864 to February, 1865.Formerly Right Wing 16th Army Corps, Army Tenn.
Designated Detachment Army Tenn., Dec. 5, 1864
Transferred to rorganized 16th Army Corps,
Military Div. West. Miss. Feb. 18, 1865Major General A. J. Smith
Brig. Gen. Kenner Garrard,
Commanding Second Division
First Brigade
Col. David Moore119th Illinois, Col. Thomas J. Kinney
122d Illinois, Lieut. Col. James F. Drish
89th Indiana, Lieut. Col. Hervey Craven
* 21st Missouri, Lieut. Col. Edwin Moore
Indiana Light Artillery, 9th Battery, Lieut. Samuel G. Calfee* Detachment 24th Missouri attached.
Second Brigade
Col. James I. Gilbert58th Illinois, Maj. Robert W. Healy
27th Iowa, Lieut. Col. Jed Lake
32d Iowa, Lieut. Col. Gustavus A. Eberhart
20th Kansas (four companies), Capt. William C. Jones
Indiana Light Artillery, 3d Battery, Lieut. Thomas J. Ginn.
Third Brigade
Col. Edward H. Wolfe49th Illinois, Col. Phineas Pease
117th Illinois, Lieut. Col. Johathan Merriman
52d Indiana, Lieut. Col. Zalmon S. Main
178th New York, Capt. John B. Gandolfo
2d Illinois Light Artillery, Battery G, Capt. John W. Lowell ** Chief of division artillery
2nd Brigade, 2nd Division, 16th Army Corps
Military Division West Mississippi
February 1865 to August, 1865.Brig. Gen. Kenner Garrard
First Brigade
Col. John I. Rinaker119th Illinois, Col. Thomas J. Kinney
122d Illinois, Maj. James F. Chapman
89th Indiana, Lieut. Col. Hervey Craven
21st Missouri, Capt. Charles W. Tracy
Second Brigade
Brig. Gen. James I. Gilbert117th Illinois, Col. Risdon M. Moore
27th Iowa, Maj. George W. Howard
32d Iowa, Lieut. Col. Gustavus A. Eberhart
10th Kansas (four companies), Lieut. Col. Charles S. Hills
6th Minnesota, Lieut. Col. Hiram P. Grant
Third Brigade
Col. Charles L. Harris58th Illinois (five companies), Capt. John Murphy
52d Indiana, Lieut. Col. Zalmon S. Main
34th New Jersey, Col. William H. Lawrence
278th New York (five companies), Lieut. Col. John B. Gandolfo.
11th Wisconsin, Maj. Jesse S. Miller.