They were engaged at Shiloh, Tenn. on April 6, 1862 suffering at least 29 killed, 63 wounded and one captured. His name is not included on a list of these men. This tabulation is taken from information gained from the individual records of these individual soldiers. Not all those wounded who died later have information in their files as to the source of their wounds. I would suspect that Henry died of either disease, or from wounds suffered at Shiloh.
Unfortunately, Footnote.com does not yet have the service records of Iowa soldiers. Your best bet would be to obtain his records which should indicate cause of death, Yankee records are rather complete in this record. You can obtain his records through the service noted in the Red enclosed box above.
The National Military Park at Shiloh may very well have cause of death in their files of those buried there.
Henry M. Swift
Residence Boone County IA; 18 years old.
Enlisted on 12/19/1861 as a Private.
On 12/19/1861 he mustered into "E" Co. IA 11th Infantry
He died on 6/23/1862
Other Information:
born in Missouri
(Buried in Shiloh National Cemetery, Pittsburg Landing,
TN; sec. D, grave 5)
Sources used by Historical Data Systems, Inc.:
- Roster & Record of Iowa Soldiers in the War of Rebellion
(c) Historical Data Systems, Inc. @ www.civilwardata.com
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Short History of the 11th Iowa Infantry from
Dyer, Frederick Henry. A Compendium of the War of the Rebellion, Compiled and Arranged from Official Records of the Federal and Confederate Armies, Reports of the Adjutant Generals of the Several States, 3 vols. Des Moines, lA: Dyer Publishing Co., 1908; reprint, 1 vol., Dayton, OH; Morningside Bookshop, 1990., p. 1169.
Organized at Davenport, Iowa, September 28 to October 18, 1861.
Ordered to St. Louis, Mo., November 1. Attached to Dept. of Missouri to March, 1862.
1st Brigade, 1st Division, Army of Tennessee, to April, 1862.
3rd Brigade, 6th Division, Army of Tennessee, to July, 1862, and District of Corinth to November, 1862.
SERVICE.--
Moved to Jefferson City, Mo., November, 1861, and duty there till March, 1862.
Expedition to Booneville December 8, 1861, and to Providence and Booneboro December 14.
Moved to Pittsburg Landing, Tenn., March 10, 1862.
Battle of Shiloh, Tenn., April 6-7.
Advance on and siege of Corinth, Miss., April 29-May 30.
Duty at Corinth and Bolivar till November.
http://www.rootsweb.ancestry.com/~ialcgs/mifflinj.htm