It's thought that more than 200,000 people were killed in the Battle of Okinawa, the bloodiest in the Pacific theatres in WWII, which raged for nearly three months from April 1945. Most of the casualties were Japanese, including many civilians. 80 years on, volunteer "bone diggers" are still finding and identifying remains from the battle in places like caves. While there's been a renewed push to use DNA matching to determine more of Japan's war dead, it's only positively identified a handful of