I ran across one of Dr. Maurice Wilkin's books on practical surgery LINK.
We used some of his books in Africa, and his website is here.
There is also one for marine emergencies in ships at sea.
Survival and austere medicine
list of books with links here.
including some free military type ones and some you need to buy.
lots of military ones HERE.
and don't forget Hesperian foundations' great books such as "where there is no docotr"...(buy them if you can afford them).