Japanese flag

[Brad198080]

Can anyone tell me anything about this flag. My grandfather was a Marine the the South Pacific during WW2. There is something written on the flag but I cant make it out. Thank you

 

[Shinpachi]

向井三郎 (Mukai, Saburo) in my impression.

 

[Brad198080]

Does it mean anything?

 

[Shinpachi]

向井三郎 (Mukai, Saburo) is a male name. Mr Saburo Murai in western style.
I think he was a civilian because his flag looks like home-made to fly on the house.