IJA North China Front Army soldiers in a mountain region of China, January 1940.

The Imperial Army in China 1940

Japanese soldiers posing with a captured soviet soldier. Mongolia, september 1939

Russian POW

Nakajima ki-27 Fighters during the Battles of Khalkhin Gol against the USSR, the Ki-27 faced both Polikarpov I-15 biplane and Polikarpov I-16 monoplane fighters. In the initial phase of the conflict, its performance was a match for the early model I-16s, and was considerably superior to the I-15 biplane. With better trained Ki-27 pilots, the IJAAF gained aerial superiority.