You know, I have a feeling that a fairly big number of those wounded would have died of their injuries in this era. I mean, medicine is certainly better than in the civil war but it's still not great. No antibiotics in those days and there will be a shortage of nurses and surgeons for sure. At least the British would have had a large pool of trained field doctors after the recent wars. Interestingly, you have a situation with Clara Barton and Florence Nightingale living on opposite sides during a war.