Shoulder Strap

[Carl-Julien]

Hello everyone, I got a shoulder strap with Japanese characters on it through inheritance. I would like to know what these signs mean. Is anyone kind enough to help me with this, please? Kind Regards, Carl (Belgium).

 

[Majestic]

The flag is showing upside-down in the picture. The smallest letters should be on the bottom. It says
Nakajima Airplane Company, Isezaki Factory
Special Defense Group
Rescue Team

 

[Grandpa Frank]

 

[Carl-Julien]

Dear Majestic, You have been extremely helpful with the translation for which I am most grateful. Kind Regards, Carl