The Army of the Ohio was the name of two Union armies in the American Civil War. The first army became the Army of the Cumberland and the second army was created in 1863.
The western theater of the American Civil War encompassed major military operations in the states of Alabama, Georgia, Florida, Mississippi, North Carolina, Kentucky, South Carolina and Tennessee, as well as Louisiana east of the Mississippi River. Operations on the coasts of these states, except for Mobile Bay, are considered part of the Lower Seaboard Theater. Most other operations east of the Appalachian Mountains are part of the eastern theater. Operations west of the Mississippi River took place in the trans-Mississippi theater.
The 104th Ohio Infantry Regiment, sometimes 104th Ohio Volunteer Infantry, was an infantry regiment in the Union army during the American Civil War. It played a conspicuous role at the Battle of Franklin during the 1864 Franklin–Nashville campaign, where six members later received the Medal of Honor, most for capturing enemy flags.
The 78th Illinois Infantry Regiment was an infantry regiment that served in the Union Army during the American Civil War.
The 5th Kentucky Infantry Regiment, unofficially known as the Louisville Legion was an infantry regiment that served in the Union Army during the American Civil War.
The 16th Kentucky Infantry Regiment was an infantry regiment that served in the Union Army during the American Civil War.
The 80th Regiment Indiana Infantry was an infantry regiment that served in the Union Army during the American Civil War.
The 74th Indiana Infantry Regiment, officially known as the 74th Regiment, Indiana Volunteer Infantry, was an infantry regiment that served in the Union Army during the American Civil War.
The 125th Illinois Volunteer Infantry was an infantry regiment from Illinois that served in the Union Army during the American Civil War. Soon after mustering into Federal service in September 1862, the regiment fought at Perryville. After being stationed at Nashville, Tennessee, the unit briefly fought at Chickamauga and served in the Chattanooga and Knoxville campaigns in 1863. The regiment participated in the Atlanta campaign in 1864, where it took heavy losses at Kennesaw Mountain. It also fought at Peachtree Creek and Jonesborough. At the end of 1864, it served during Sherman's March to the Sea and in 1865 the unit fought in the Carolinas campaign. The regiment participated in the Grand Review of the Armies before being mustered out of service in June 1865.
The 54th Ohio Infantry Regiment was an infantry regiment in the Union Army during the American Civil War. They wore Zouave uniforms that were identical to those of the 34th Ohio Infantry Regiment
The 57th Ohio Infantry Regiment was an infantry regiment in the Union Army during the American Civil War.
The 111th Ohio Infantry Regiment, sometimes 111th Ohio Volunteer Infantry was an infantry regiment in the Union Army during the American Civil War.
The 118th Ohio Infantry Regiment, sometimes 118th Ohio Volunteer Infantry was an infantry regiment in the Union Army during the American Civil War.
15th Indiana Battery Light Artillery was an artillery battery that served in the Union Army during the American Civil War.
23rd Indiana Battery Light Artillery was an artillery battery that served in the Union Army during the American Civil War.
The 103rd Illinois Volunteer Infantry Regiment was an infantry regiment that served for three years during the American Civil War. Organized in Peoria, Illinois, and formed from men entirely within Fulton County, Illinois, the group left Illinois, serving with Sherman through the Atlanta Campaign, March to the Sea and Carolina Campaign. Finally, the regiment participated in the troop review in Washington, D.C., before mustering out in Chicago, and traveling back to their homes.
The 63rd Regiment Indiana Infantry was an infantry regiment that served in the Union Army during the American Civil War.
The 112th Illinois Volunteer Infantry was an infantry regiment in the Union Army during the American Civil War. It was organized at Peoria in September 1862 and garrisoned places in Kentucky until Spring 1863. Beginning in April 1863, the regiment served as mounted infantry during the Knoxville campaign, before being dismounted in February 1864. Subsequently, it served in the Atlanta campaign, the Franklin-Nashville campaign, and the Carolinas campaign as part of the XXIII Corps. The regiment was mustered out on June 20, 1865.
The 7th Texas Infantry Regiment was a unit of Confederate States Army infantry volunteers organized in 1861 that fought mostly in the Army of Tennessee during the American Civil War. The regiment was captured at Fort Donelson in 1862 and sent to Northern prison camps. After the survivors were exchanged and new recruits added, the regiment was reconstituted and fought at Raymond, Jackson, Chickamauga, Missionary Ridge, and Ringgold Gap in 1863. The unit served in the Atlanta Campaign and at Franklin, Nashville, Averasborough, and Bentonville in 1864–1865. The regiment's 65 survivors surrendered to William Tecumseh Sherman's Federal forces on 26 April 1865.
United States 
