Since 1947, Japan's constitution (which we helped write) has forbidden the formation of a "traditional military force". They strictly have self defense.
And Japan's current army is called the Japanese Land Self Defense Force.
Thirty-Second Army - Japan - was created in 1944.
Army War College - Japan - ended in 1945.
Fifty-Fifth Army - Japan - was created in 1945.
With Japan's industrial base; Japan built a navy, army, and air force. After building those forces; their navy, army, and air force trained for war.
Yes, Japan does have a military but has no army. Japan's military can only be used for self-defense and the reason why Japan does not have an army because they'll be bringing military weapons and vehicles to attack other countries. After WW2, they were banned by the rules. Japan can only use its military in defense.
Third Army - Japan - was created in 1904.
Third Army - Japan - ended in 1945.
Fortieth Army - Japan - was created in 1945.
Fortieth Army - Japan - ended in 1945.
Fiftieth Army - Japan - ended in 1945.
Fiftieth Army - Japan - was created in 1945.
Taiwan Army of Japan was created in 1919.
Fourth Army - Japan - ended in 1945.
Fourth Army - Japan - was created in 1904.
Nineteenth Army - Japan - was created in 1942.
Nineteenth Army - Japan - ended in 1945.
Twentieth Army - Japan - was created in 1941.