In my opinion, the leftists of today err, not understanding that the motivations of the secession leadership and the Confederate fighting man was very often different. Even the political nitwits of the Confederate Congress understood this as is seen by their harebrained scheme in 1865 to increase the identification of the Confederate soldier to the institution of slavery by promising each reb soldier a number of slaves at the end of the war. According to the PC thinking of today, no reb soldier needed any such inducement to be totally committed to the cause of slavery.
As only a small percentage of the men and boys fighting for the South owned any slaves or had any use for them, I don’t see how offering them slaves as a bribe would work.