Type 38 75 mm Field gun
The Type 38 75 mm Field Gun (三八式野砲 Sanhachi-shiki yahō?) was a 1905 German design which was purchased by the Empire of Japan as the standard field gun of the Imperial Japanese Army at the end of the Russo-Japanese War. The Type 38 designation was given to this gun as it was accepted in the 38th year of Emperor Meiji’s reign (1905).
Additional Information: en.wikipedia.org/wiki/Type_38_75_mm_Field_Gun