[1][2][3] It was mustered in for three years service under the command of Colonel Joshua Woodrow Sill.

1st Brigade, 1st Division, Center, XIV Corps, Army of the Cumberland, to January 1863.

The 33rd Ohio Infantry mustered out of service at Louisville, Kentucky, on July 12, 1865.

[4] 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.