The was an army

Corps

A corps is either a large formation, or an administrative grouping of troops within an armed force with a common function such as Artillery or Signals representing an arm of service...

 of the Imperial Japanese Army

Imperial Japanese Army

-Foundation:During the Meiji Restoration, the military forces loyal to the Emperor were samurai drawn primarily from the loyalist feudal domains of Satsuma and Chōshū...

 during the Second Sino-Japanese War

Second Sino-Japanese War

The Second Sino-Japanese War was a military conflict fought primarily between the Republic of China and the Empire of Japan. From 1937 to 1941, China fought Japan with some economic help from Germany , the Soviet Union and the United States...

.

History

The Japanese 12th Army was formed on November 7, 1938 under the North China Area Army as a garrison force for the occuparion the provinces North China

North China

thumb|250px|Northern [[People's Republic of China]] region.Northern China or North China is a geographical region of China. The heartland of North China is the North China Plain....

. It served primary as a training and reserve unit, and participate in counter-insurgency

Counter-insurgency

A counter-insurgency or counterinsurgency involves actions taken by the recognized government of a nation to contain or quell an insurgency taken up against it...

 operations.

The 15th Army was demobilized

Demobilization

Demobilization is the process of standing down a nation's armed forces from combat-ready status. This may be as a result of victory in war, or because a crisis has been peacefully resolved and military force will not be necessary...

 at Zhengzhou

Zhengzhou

Zhengzhou , is the capital and largest city of Henan province in north-central China. A prefecture-level city, it also serves as the political, economic, technological, and educational centre of the province, as well as a major transportation hub for Central China...

, Henan Province on the surrender of Japan

Surrender of Japan

The surrender of Japan in 1945 brought hostilities of World War II to a close. By the end of July 1945, the Imperial Japanese Navy was incapable of conducting operations and an Allied invasion of Japan was imminent...

.

Commanding officers

	Name	From	To
1	Lieutenant General Kamezo Suetaka	9 November 1938	12 September 1939
2	Lieutenant General Sadataka Iida	12 September 1939	1 March 1941
3	Lieutenant General Ichiji Dobashi	1 March 1941	1 March 1943
4	Lieutenant General Seiichi Kita	1 March 1943	7 February 1944
5	Lieutenant General Eitaro Uchiyama	5 February 1944	7 April 1945
6	Lieutenant General Takashi Takamori	7 April 1945	15 August 1945

Chief of Staff

	Name	From	To
1	Lt. General Asasaburo Kobayashi	9 November 1938	1 December 1939
2	Lt. General Yoshio Hongo	1 December 1939	2 December 1940
3	Lt. General Masafumi Yamauchi	2 December 1940	15 October 1941
4	Major General Etsujiro Kono	15 October 1941	10 December 1942
5	Major General Tadao Teragaki	10 December 1942	16 October 1944
6	Lt. General Makoto Nakayama	16 October 1944	1 September 1945