Most confederate statues were actually raised in the 1890's-1920's by the daughters of elderly confederate soldiers who were dying. Congress declared them US vets and most of the statues are just small memorials to the actual soldiers who fought and died in the hundreds of thousands. Virtually every Southern man who fought in the civil war fought for the South and virtually every Northern man who fought , fought for the North. The main reason was slavery but geography played the major role in which side people fought for not ideology. There were many Irish, German and Swiss immigrants arriving in America in the mid 1800s without any loyalty to any cause and they joined whichever side of the war the place they settled in was on. Sometimes some members of the same recently arrived families were fighting on opposite sides of the battlefield.