Need help with Mystery Document

[100yardsovertherim]

I have this mystery item that I'm hoping someone can help me identify.  This item looks like a document of some kind about the size of a postcard, and it came with a portrait photograph of a Japanese army officer.  Given the star at the top, I'm assuming that the item is Japanese army-related but that's about as far as my knowledge goes. 

 

Can anyone shed any light on what this card/document is?

Thank you in advance.

[JapanX]

Card from Army Minister Yoshiyuki Kawashima dated September 16, 1935 regarding Saga prefecture national defense association air defense maneuvers with the use of large air sound detectors Type 90 that will take place on September 25, 1935. 

 

 

[100yardsovertherim]

1 hour ago, JapanX said:

Card from Army Minister Yoshiyuki Kawashima dated September 16, 1935 regarding Saga prefecture national defense association air defense maneuvers with the use of large air sound detectors Type 90 that will take place on September 25, 1935. 

 

 

Thank you for the prompt response!  I would have never guessed the subject matter.

 

Thank you again.