Badge from 1940.
Obverse
御視閲記念 - Imperial Inspection Commemorative
reverse
陸軍現役将枝學枝 - Army Active Duty Officers School Assignment Ordinance
配属令公布十五年記念 - Commemorating the 15th Anniversary of the Edict Promulgation
岡山縣中等學 - Okayama Prefecture Middle School
拝受者章 - Recipient's Badge...