No need to fight, pulled this straight from Wikipedia. Enough to go around and then some.
American Civil War regiments
33rd United States Colored Infantry Regiment, a unit of the Union Army
33rd Wisconsin Volunteer Infantry Regiment, a unit of the Union Army
33rd Pennsylvania Infantry, a unit of the Union Army
33rd Ohio Infantry, a unit of the Union Army
33rd New York Volunteer Infantry Regiment, a unit of the Union Army
33rd Regiment Kentucky Volunteer Infantry, a unit of the Union Army
33rd Illinois Volunteer Infantry Regiment, a unit of the Union Army
33rd Indiana Infantry Regiment, a unit of the Union Army
33rd Iowa Volunteer Infantry Regiment, a unit of the Union Army
33rd Virginia Infantry, a unit of the Confederate States Army
33rd Tennessee Infantry Regiment, a unit of the Confederate States Army
33rd Regiment Alabama Infantry, a unit of the Confederate States Army
33rd Arkansas Infantry Regiment, a unit of the Confederate States Army