The other thing I was going to suggest.....if you can find the title of his regimental history, there are some bookstores that can try to get him a copy. Brown Bookstore has a good service, I've gotten obscure reprints from them before (a Ares Press reprint of an etymological dictionary of ancient Greek, for instance -- one originally put out in 1910 or something). I'm sure there are others.
free dixie,sw