12th Ohio Infantry

This Regiment was organized May 3rd, 1861 for three months service, and June 28th 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 served in West Virginia until August, 1862, when it was transferred to the Army of the Potomac, and participated in the battles of Bull Run, South Mountain and Antietam.

Detail Map #7: Burnside Attacks the Lower Bridge (10 am-1 pm)
Detail Map #12: Burnside's Ninth Corps Climbs Toward Sharpsburg (3-4 pm)
Detail Map #13: AP Hill's Division Hits Burnside's Flank (4-5 pm)

Tablet #56: Ninth Army Corps - 15 Sep, 7 AM to 16 Sep, 3 PM
Tablet #59: Kanawha Division, Ninth Army Corps - 16 Sep, 6 PM to 17 Sep, 5 PM
Tablet #61: Ewing's Brigade, Kanawha Division - 16 Sep, 6 PM to 17 Sep, 5 PM
Tablet #122: Army of the Potomac - 17 Sep, 10 AM to 17 Sep, 6 PM
Tablet #70, cont: Ninth Army Corps - 17 Sep, 3 PM to 17 Sep, 5 PM
Tablet #70: Ninth Army Corps - 17 Sep, 7 AM to 17 Sep, 3 PM
Tablet #57: Ninth Army Corps - 17 Sep, 7 AM to 17 Sep, 5 PM

In the fall of 1862, the Regiment again transferred to West Virginia and did efficient service until the spring of 1864, when it joined Hunter's expedition to Lynchburg. The Regiment returned to Columbus, Ohio, and was mustered out July 11th, 1864.

A brief history, and Dyer's summary is online from Larry Stevens at Ohio in the Civil War.