This is a Japanese military map of North Asia dated 25th/29th July, 12 Year of Showa reign. This is translated to the 12th year of Emperor Hirohito’s reign. He became emperor in 1926 and died in 1989. Add the 12 year to 1926 that translate the map dating to 1938. This is a general Japanese military map of North Asia of the Japanese troop deployment and the armies that they are fighting against...