Great Japan Chemical Defense Association Armband Badges/大日本國防化學協會腕章

1st type badge.

大日本帝國防化學協會 - Great Japan Chemical Defense Association

指導員 - Instructor

The badge is similar to the membership badge, but instead of the pin has four hooks for sewing it to the armband.

 

2nd type badge.

Private collection. Photos courtesy of the owner.

東京府國防化學協會 - Tokyo Prefecture National Defense Chemistry Association

理事 - Director (member of board of directors/trustees)

1st variation of the 2nd type badge has cockade/hat badge like two-prong fastening.

2nd variation of the 2nd type badge has pin fastening.