See also https://asiamedals.info/threads/1935-air-defense-maneuvers-mukojima-ward-air-raid-defense-corps-participation-badge.29130/ ; https://asiamedals.info/threads/1936-air-defense-maneuvers-mukojima-ward-air-defense-corps-participation-badge.25023/.
Size 35 x 25 mm.
Obverse
Army star...