The 33rd Ohio Infantry Regiment was an infantry regiment in the Union Army during the American Civil War.

Service

The 33rd Ohio Infantry Regiment was organized at Portsmouth, Ohio, from August 5 through September 13, 1861. It was mustered in for three years service under the command of Colonel Joshua Woodrow Sill. Companies were recruited from Southern Ohio. The regiment was attached to 9th Brigade, Army of the Ohio, October to December 1861. 9th Brigade, 3rd Division, Army of the Ohio, to September 1862. 9th Brigade, 3rd Division, I Corps, Army of the Ohio, to November 1862. 1st Brigade, 1st Division, Center, XIV Corps, Army of the Cumberland, to January 1863. 1st Brigade, 1st Division, XIV Corps, to July 1865. The 33rd Ohio Infantry mustered out of service at Louisville, Kentucky, on July 12, 1865.

Detailed service

The regiment's detailed service is as follows:

1861

1862

1863

1864

1865

Casualties

The regiment lost a total of 332 men during service; 7 officers and 130 enlisted men killed or mortally wounded, 3 officers and 192 enlisted men died of disease.

Commanders

Notable members

Of the 24 men (including 2 civilians) who participated in Andrews' Raid, eight were from the 33rd Ohio Volunteer Infantry. All from the 33rd Ohio who participated, except Corporal Samuel Llewellyn, were awarded the Medal of Honor.