Fairbairn held the rank of third - degree brown belt under Kano at the time of Defendu 's publication .
Fairbairn 's system of martial arts was based heavily on his training at the Kodokan Institute in Japan under Jigoro Kano .
Fairbairn held the rank of third - degree brown belt under Jigoro Kano at the time of Defendu 's publication .
Fairbairn 's system of martial arts was based heavily on his training at the Kodokan Institute in Japan under Jigoro Kano .