These badges /patches/ were introduced on January 25, 1944 by Ministry of Health and Welfare Notice No. 7 in three grades.
Badges were awarded to students who have passed the martial arts exam.
Original official description of the badges.
1944 martial arts badge
1944 martial arts physical fitness badge
japanese badge
japanese home front martial arts badge
japanese homefronet martial arts badges
japanese physical fitness badge
martial arts physical fitness badge
上級武道章
中級武道章
初級武道章
武道章