120th Ohio Infantry

Organized at Mansfield, Ohio, August 29, 1862. Moved to Cincinnati, Ohio, October 25; thence to Covington, Ky., and duty there till November 24. Served Unattached, Army of Kentucky, Dept. of the Ohio, to November, 1862. 1st Brigade, 9th Division, Right Wing 13th Army Corps (Old), Dept. of the Tennessee, to December, 1862. 1st Brigade, 3rd Division, Sherman's Yazoo Expedition, to January, 1863. 1st Brigade, 9th Division, 13th Army Corps, Army of the Tennessee, to July, 1863. 3rd Brigade, 1st Division, 13th Army Corps, Dept. of the Tennessee, to August, 1863, and Dept. of the Gulf to November, 1863. Plaquemine, La., District of Baton Rouge, La., Dept. of the Gulf, to March, 1864. 2nd Brigade, 1st Division, 13th Army Corps, to June, 1864. 2nd Brigade, 3rd Division, 19th Army Corps, Dept. of the Gulf, to August, 1864. 2nd Brigade, 2nd Division, 19th Army Corps, to November, 1864.

SERVICE. – Moved to Memphis, Tenn., November 24-December 7, 1862. Sherman's Yazoo Expedition December 20, 1862, to January 3, 1863. Chickasaw Bayou December 26-28, 1862. Chickasaw Bluff December 29. Expedition to Arkansas Post, Ark., January 3-10, 1863. Assault and capture of Fort Hindman, Arkansas Post, January 10-11. Moved to Young's Point, La., January 17, and duty there till March 8. Moved to Milliken's Bend March 8. Operations from Milliken's Bend to New Carthage March 31-April 17. James' Plantation, near New Carthage, April 8. Dunbar's Plantation, Bayou Vidal, April 15. Movement on Bruinsburg and turning Grand Gulf April 25-30. Battle of Port Gibson May 1. Duty at Raymond till May 18. Siege of Vicksburg, Miss., May 18-July 4. Assaults on Vicksburg May 19 and 22. Advance on Jackson, Miss., July 4-10. Near Jackson July 9. Siege of Jackson, Miss., July 10-17. Camp at Vicksburg till August. Moved to New Orleans August 18. Duty at Carrollton till September 3, and at Brashear City till October 3. Western Louisiana Campaign October 3-November 30. Duty at Plaquemine, La., till March 23, 1864. Moved to Baton Rouge March 23, and duty there till May 1. Ordered to join Banks at Alexandria on Red River Expedition May 1. Embarked on Steamer "City Belle." Action en route at Snaggy Point May 3. Most of Regiment captured. Those who escaped formed into a Battalion of three Companies and marched to Alexandria. Retreat from Alexandria to Morganza May 13-20. Mansura or Marksville Prairie May 16. Duty at Morganza till September. Expedition to mouth of White River and St. Charles September 13-20. Expedition to Duvall's Bluff, Ark., October 21-27. Consolidated with 114th Ohio Infantry November 25, 1864.

Regiment lost during service 2 Officers and 17 Enlisted men killed and mortally wounded and 6 Officers and 275 Enlisted men by disease. Total 300.

SOURCE: Frederick H. Dyer, A Compendium of the War of the Rebellion, Part 3, p. 1546-7