12th Ohio Infantry Regiment was an

infantry Infantry is a military specialization which engages in ground combat on foot. Infantry generally consists of light infantry, mountain infantry, motorized infantry & mechanized infantry, airborne infantry, air assault infantry, and marine i ...

regiment A regiment is a military unit. Its role and size varies markedly, depending on the country, service and/or a specialisation. In Medieval Europe, the term "regiment" denoted any large body of front-line soldiers, recruited or conscripted ...

in the

Union Army During the American Civil War, the Union Army, also known as the Federal Army and the Northern Army, referring to the United States Army, was the land force that fought to preserve the Union (American Civil War), Union of the collective U.S. st ...

during the

American Civil War The American Civil War (April 12, 1861 – May 26, 1865; also known by other names) was a civil war in the United States. It was fought between the Union ("the North") and the Confederacy ("the South"), the latter formed by states th ...

History

The 12th Ohio Infantry Regiment was organized at Camp Dennison,

Cincinnati, Ohio Cincinnati ( ) is a city in the U.S. state of Ohio and the county seat of Hamilton County. Settled in 1788, the city is located at the northern side of the confluence of the Licking and Ohio rivers, the latter of which marks the state line wit ...

, on May 3, 1861, for three-months service, and reorganized on June 28 for three years, under Colonel John W. Lowe, who was killed early in the war and was succeeded by Col. Carr B. White. The 12th Ohio served in

western Virginia Western Virginia is a geographic region in Virginia comprising the Shenandoah Valley and Southwest Virginia. Generally, areas in Virginia located west of, or (in many cases) within, the piedmont region are considered part of western Virginia. T ...

until August 1862, when it was transferred to the

Army of the Potomac The Army of the Potomac was the principal Union Army in the Eastern Theater of the American Civil War. It was created in July 1861 shortly after the First Battle of Bull Run and was disbanded in June 1865 following the surrender of the Confedera ...

and participated in the battles of

Second Bull Run The Second Battle of Bull Run or Battle of Second Manassas was fought August 28–30, 1862, in Prince William County, Virginia, as part of the American Civil War. It was the culmination of the Northern Virginia Campaign waged by Confederat ...

, South Mountain and

Antietam The Battle of Antietam (), or Battle of Sharpsburg particularly in the Southern United States, was a battle of the American Civil War fought on September 17, 1862, between Confederate Gen. Robert E. Lee's Army of Northern Virginia and Union G ...

. In the fall of 1862, it was again transferred to western Virginia and did efficient service until the spring of 1864, when it joined Hunter's expedition to

Lynchburg, Virginia Lynchburg is an independent city (United States), independent city in the Commonwealth (U.S. state), Commonwealth of Virginia in the United States. First settled in 1757 by ferry owner John Lynch (1740–1820), John Lynch, the city's populati ...

. The regiment returned to

Columbus, Ohio Columbus () is the state capital and the most populous city in the U.S. state of Ohio. With a 2020 census population of 905,748, it is the 14th-most populous city in the U.S., the second-most populous city in the Midwest, after Chicago, and t ...

, and was mustered out July 11, 1864. Union Army Brigadier General Jacob Ammen began his Civil War service as a captain in the 12th Ohio Infantry before being promoted to command the 24th Ohio Infantry Regiment. Harrison G. Otis served as a Sergeant, and then Lieutenant, in Companies I and B before transferring to the

23rd Ohio Infantry The 23rd Ohio Infantry Regiment was an infantry regiment in the Union Army during much of the American Civil War. It served in the Eastern Theater in a variety of campaigns and battles, and is remembered with a stone memorial on the Antietam Nati ...

and being wounded at the

Second Battle of Kernstown The Second Battle of Kernstown was fought on July 24, 1864, at Kernstown, Virginia, outside Winchester, Virginia, as part of the Valley Campaigns of 1864 in the American Civil War. The Confederate Army of the Valley under Lt. Gen. Jubal A. Ear ...

. The 12th Ohio Infantry sustained 455 men killed, wounded and missing.

References

Ohio in the Civil War - 12th OVI Page by Larry Stevens
Units and formations of the Union Army from Ohio 1861 establishments in Ohio Military units and formations established in 1861 Military units and formations disestablished in 1864 1864 disestablishments in Ohio {{AmericanCivilWar-unit-stub