Three-months regiment The 22nd Ohio Infantry Regiment (Three Months Service) was organized at Camp Jackson in
Columbus, Ohio April through May 1861 in response to
President Lincoln's call for 75,000 volunteers and mustered into service on May 23, 1861. The regiment moved to
Parkersburg, Virginia, May 30, then to Burning Springs, Elizabethtown, and to Three Forks. The regiment was attached to Cox's Brigade, District of the Kanawha. It participated in operations against guerrillas in Gilmer, Calhoun and Braxton Counties and railroad guard duty until August. It mustered out on August 19, 1861, by John R. Edie, Major 15th Infantry U.S.A., Mustering Officer. The 22nd Ohio Infantry (3 Months Service) does not share lineage with the subsequent 22nd Ohio Volunteer Infantry (3 Years Service).
Three-years regiment The 22nd Ohio Infantry (Three Years Service) was organized at Benton Barracks in
St. Louis, Missouri, originally mustered in as the 13th Missouri Volunteer Infantry (two companies were recruited in St. Louis and one was recruited in Illinois; the remainder were recruited in Ohio). It mustered in for three years service on November 5, 1861. The regiment's designation was officially changed to the 22nd Ohio Volunteer Infantry on July 7, 1862. The regiment was attached to 2nd Brigade, 2nd Division, District of West Tennessee and
Army of the Tennessee, to July 1862. 2nd Brigade, 2nd Division, District of Corinth, Mississippi, to September 1862. 1st Brigade, 2nd Division, District of Corinth, Mississippi, to October 1862. 2nd Brigade, 2nd Division, District of Corinth, Mississippi, to November 1862. 2nd Brigade, District of Corinth, Mississippi,
XIII Corps,
Department of the Tennessee, to December 1862. 2nd Brigade, District of Corinth,
XVII Corps, to January 1863. 4th Brigade, District of Jackson,
XVI Corps, Army of the Tennessee, to March 1863. 2nd Brigade, 3rd Division, XVI Corps, to May 1863. Kimball's Provisional Division, XVI Corps, to July 1863. 2nd Brigade, Kimball's Division, District of Eastern Arkansas, to August 1863. 2nd Brigade, 2nd Division, Arkansas Expedition, to January 1864. 2nd Brigade, 2nd Division,
VII Corps, Department of Arkansas, to March 1864. 3rd Brigade, 3rd Division, VII Corps, Department of Arkansas, to May 1864. 2nd Brigade, 2nd Division, VII Corps, to February 1865. 1st Brigade, 3rd Division, VII Corps, to August 1865. The 22nd Ohio Infantry mustered out of service on August 28, 1865, having been reduced to two companies on November 18, 1864, when most of the regiment mustered out due to the expiration of their enlistments. ==Detailed service==