There is an old WWII movie (B&W) that I have only seen once years ago. Set on a Japanese held island - lots of caves. I can't even remember who the cast was - what I do remember is that a big deal was made out of the handling of the dog tags for the KIA's. They place the Tag in the mouth longways between the upper and lower teeth stating that was the best way to insure that the tags did not get lost. Does that ring any bells?

"A fanatic is someone who can't change his mind and won't change the subject" Churchill