I know of some Confederate Soldiers who knew that Slavery was a key issue, and they were not shy about saying so...I'd be carefull about calling them ignorant!
Kevin Dally
“I am convinced the institution of slavery is now virtually destroyed & with it we lose the great object for which the Confederacy was made, and without which there never would have been a Confederacy”
Lt. O. C. Orange 19th Texas Infantry