After serving in a number of administrative positions with the
Imperial Japanese Army General Staff, Inada was assigned as a
military attaché to
France from 1929-1931. After his promotion to
colonel, Inada served as Chief of the 2nd Section (Maneuvers & War Plans), 1st Bureau, of the General Staff from 1938 to 1939, and was thus involved in the planning of the
Battle of Wuhan and subsequent operations in the
Second Sino-Japanese War. Inada was also involved in the planning for the ill-fated
Battle of Lake Khasan and
Battle of Khalkhin Gol in the
Soviet-Japanese Border Wars. From 1940 Inada was commanding officer of a heavy artillery regiment based in
Acheng in northern
Manchukuo. In 1941 he became Vice
Chief of Staff of the
5th Army in Manchukuo. He was promoted to
major general in 1941, and became Chief of Staff of the 5th Army from 1942. Inada was then sent as Vice Chief of Staff of the
Southern Expeditionary Army Group in the
Pacific Theater from 1942 to 1943. To support Japanese forces in
New Guinea he was sent in 1943 to command of the 2nd Field Operations Base Area. In 1944 he became commander of the
6th Air Division. Later that year, due to a diplomatic incident in
Thailand, he was placed in reserve, then reassigned as commander of the 3rd Shipping Transport Command, based in
Singapore. Promoted to
lieutenant general in April 1945, Inada was Chief of Staff of the
16th Area Army until the
surrender of Japan. ==Later life and death==