Hi All,
I recently had cause to scan Dad's "Blood Chit" from Korea.
Wiki explains, "Blood chit is a notice that is carried by the military, usually aircraft personnel, that displays messages aimed at the civilians that ask them to help the service member in case they are shot down. Chit is English slang for a small document or note.
I'm attaching a scan. You often see them stitched onto the back of flight jackets of pilots.
a Web Blood Chit.jpg
Cheers
Owen