The was an

army An army, ground force or land force is an armed force that fights primarily on land. In the broadest sense, it is the land-based military branch, service branch or armed service of a nation or country. It may also include aviation assets by ...

of the

Imperial Japanese Army The Imperial Japanese Army (IJA; , ''Dai-Nippon Teikoku Rikugun'', "Army of the Greater Japanese Empire") was the principal ground force of the Empire of Japan from 1871 to 1945. It played a central role in Japan’s rapid modernization during th ...

based in

Manchukuo Manchukuo, officially known as the State of Manchuria prior to 1934 and the Empire of Great Manchuria thereafter, was a puppet state of the Empire of Japan in Northeast China that existed from 1932 until its dissolution in 1945. It was ostens ...

from the

Russo-Japanese War The Russo-Japanese War (8 February 1904 – 5 September 1905) was fought between the Russian Empire and the Empire of Japan over rival imperial ambitions in Manchuria and the Korean Empire. The major land battles of the war were fought on the ...

until the end of

World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...

History

Russo-Japanese War

The Japanese 4th Army was initially raised on June 24, 1904, in the midst of the

under the command of General

Nozu Michitsura Field Marshal The Marquis was a Japanese field marshal and leading figure in the early Imperial Japanese Army. Biography Nozu was born in Kagoshima as the second son of a low-ranking ''samurai'' of the Satsuma Domain. He studied Japanese sw ...

out of various reserve elements, to provide support and additional manpower in the Japanese drive towards

Mukden Shenyang,; ; Mandarin pronunciation: ; formerly known as Fengtian formerly known by its Manchu name Mukden, is a sub-provincial city in China and the provincial capital of Liaoning province. It is the province's most populous city with a p ...

in the closing stages of the war against

Imperial Russia Imperial is that which relates to an empire, emperor/empress, or imperialism. Imperial or The Imperial may also refer to: Places United States * Imperial, California * Imperial, Missouri * Imperial, Nebraska * Imperial, Pennsylvania * ...

. It was disbanded at Mukden on January 17, 1906, after the signing of the

Treaty of Portsmouth The Treaty of Portsmouth is a treaty that formally ended the 1904–1905 Russo-Japanese War. It was signed on September 5, 1905, after negotiations from August 6 to 30, at the Portsmouth Naval Shipyard in Kittery, Maine, United States. U.S. P ...

and the end of the war.

Second Sino-Japanese War

After the start of the

Second Sino-Japanese War The Second Sino-Japanese War was fought between the Republic of China (1912–1949), Republic of China and the Empire of Japan between 1937 and 1945, following a period of war localized to Manchuria that started in 1931. It is considered part ...

, the Japanese Fourth Army was raised again as a

garrison A garrison is any body of troops stationed in a particular location, originally to guard it. The term now often applies to certain facilities that constitute a military base or fortified military headquarters. A garrison is usually in a city ...

force to guard the northern borders of

against possible incursions by the

Soviet The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...

Red Army The Workers' and Peasants' Red Army, often shortened to the Red Army, was the army and air force of the Russian Soviet Republic and, from 1922, the Soviet Union. The army was established in January 1918 by a decree of the Council of People ...

. It was based at Bei'an, the capital of a northern Manchukuo province of the same name, that was heavily fortified with various ground emplacements. The Fourth Army afterwards came under the operational command of the Japanese First Area Army under the overall command of the

Kwantung Army The Kwantung Army (Japanese language, Japanese: 関東軍, ''Kantō-gun'') was a Armies of the Imperial Japanese Army, general army of the Imperial Japanese Army from 1919 to 1945. The Kwantung Army was formed in 1906 as a security force for th ...

. As the war situation in the southeast Asia and China fronts of World War II worsened against the Japanese, experienced men and equipment were siphoned off from the Fourth Army to reinforce other units, leaving it largely hollowed out by the start of 1945. During the

Soviet invasion of Manchuria The Soviet invasion of Manchuria, formally known as the Manchurian Strategic Offensive Operation or simply the Manchurian Operation () and sometimes Operation August Storm, began on 9 August 1945 with the Soviet Union, Soviet invasion of the Emp ...

in the final days of

, the Japanese Fourth Army was absolutely no match for the experienced, battle-hardened Soviet armored and

mechanized infantry Mechanized infantry are infantry units equipped with Armoured personnel carrier, armored personnel carriers (APCs) or infantry fighting vehicles (IFVs) for transport and combat (see also armoured corps). As defined by the United States Army, me ...

divisions, who quickly overran or circumvented the Japanese defenses, and its poorly equipped and poorly trained forces were driven back to

Harbin Harbin, ; zh, , s=哈尔滨, t=哈爾濱, p=Hā'ěrbīn; IPA: . is the capital of Heilongjiang, China. It is the largest city of Heilongjiang, as well as being the city with the second-largest urban area, urban population (after Shenyang, Lia ...

by the time of the

surrender of Japan The surrender of the Empire of Japan in World War II was Hirohito surrender broadcast, announced by Emperor Hirohito on 15 August and formally Japanese Instrument of Surrender, signed on 2 September 1945, End of World War II in Asia, ending ...

. Many of its surviving troops became Japanese POWs in the Soviet Union.

List of Commanders

Commanding officer

Chief of Staff

References

* * * * *

External links

*{{cite web , last = Wendel , first = Marcus , url = http://www.axishistory.com/index.php?id=6889 , title = Axis History Factbook , work = Japanese 4th Army 04 Military units and formations established in 1904 Military units and formations disestablished in 1945