12th Ohio Volunteer Infantry - Regimental History

Contributed by Nikki Nickell

Ripley, Brown County Ohio, claims to have furnished the first company of volunteers for the supression of the rebellion the 13th day of April, 1861; an Union meeting was in progress when news was telegraphed of the fall of Sumpter. A. S. Leggett, who afterward, gallantley fell at Stone River, at once wrote out a heading for an enlistment roll and was the first to sign it, R.C. Rankin second, and in quick succession eighty-one others. The officers selected were as follows: Captain Jacob Ammen, afterwards General Ammen, now of Ammendale, D.C.; First Lieutenant E. C. Devore; Second Lieutenant E. M. Carey, afterwards Major in Twenty-third O.V.I.; now deceased. At noon next day Captain Ammen started for Columbus, reaching there by noon on the 15th, by which time Mr. Lincoln had issued the call for 75,000 men.


12th Regiment Infantry (3 Months). Organized at Camp Jackson, Columbus Ohio, April and May 1861. Moved to Camp Dennison Ohio 06 May and duty there till 28 June. Reorganized for three years 28 June 1861. Three months' men mustered out 25 July 1861.

12th Regiment Infantry (3 Years). Organized at Camp Dennison Ohio 28 June 1861. Left State for the Kanawha Valley WV 06 July. Attached to Cox's Kanawha Brigade, WV, to September, 1861. Bonham's Brigade, Dist. of the Kanawha, WV, to October 1861.

  • 1st Brigade, District of the Kanawha, to March 1862. 1st Brigade, Kanawha Division WV, Dept. of the Mountains, to September 1862. 1st Brigade, Kanawha Division, 9th Army Corps, Army of the Potomac, to October 1862. 1st Brigade, Kanawha Division, District of WV, Dept. of the Ohio, to March 1863. 1st Brigade, 3rd Division, 8th Army Corps, Middle Department, to June 1863. 2nd Brigade, Scammon's Division, Dept. of West Virginia, to December, 1863. 2nd Brigade, 3rd Division, Army of West Virginia, to April. 1864.


  • 2nd Brigade, 2nd Infantry, Division WV, to July 1864.





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