Today I picked up a copy of "The Fighting Man of Japan". Written by F.J. Norman, a former cavalryman who served as an instructor at Japan's leading military colleges. In this book he covers Japan's military history, the education of Japan's military and naval officers, Kenjutsu or Japanese fencing, and Japanese wrestling-Sumo and Jujitsu.
I am really excited to begin reading this book. Just what I have skimmed through looks really great.
You can purchase it on amazon here.