looks to me at a guess, like a japanese army soldiers cap, cannot say if authentic as I have never seen one in the flesh.
Hi Kevin , this is not a Japanese WW2 military issue field cap , the designs of the cap and badge are not Japanese .
We are the Pilgrims , master, we shall go
Always a little further : it may be
Beyond that last blue mountain barred with snow
Across that angry or that glimmering sea...
Communist Chinese would be my guess or North Korean perhaps?