Battle of Lake Khasan
Recalled to Japan in August 1932. Tanaka was appointed commander of the IJA 4th Field Artillery Regiment. He was attached to the IJA 1st Heavy Field Artillery Regiment from 1934 to 1935, and then attached to the 2nd Section of the Kwantung Army staff from 1935 to 1937. From 1937 to 1939, Tanaka was commander of the IJA 25th Mountain Artillery Regiment in Manchukuo, which was at the disastrous Battle of Lake Khasan against the Soviet Union.