Disease and infection killed far more soldiers than outright battle wounds. And many of the infections resulted as a result of amputations.
This is an actual army surgeon’s amputation kit. It looks clean and shiny now but in actuality the instruments would have been covered with blood, bits of flesh, dirt and bacteria. It’s amazing that any of the men survived!
Sometimes in the absence of chloroform or whiskey, these amputations would have been completed while the patient was awake. It seems horrible but we have to remember that at that time in history, amputation was seen as a last chance at life. My character will have quite a time of, ministering to these sick and wounded men.