Soviet–Japanese War

Last updated
Soviet-Japanese War
Part of the Pacific Theater of World War II
US-Soviet sailors on VJ Day.jpg
US and Soviet sailors and seamen celebrating together on VJ Day
DateAugust 9 – September 3, 1945
(3 weeks and 3 days)
Result SovietMongolian victory
Flag of the Soviet Union (1936-1955).svg  Soviet Union
Flag of the People's Republic of Mongolia (1940-1945).svg  Mongolia

Merchant flag of Japan (1870).svg  Japan

Commanders and leaders
Units involved

Red Army flag (reverse).svg Transbaikal Front

Flag of the Soviet Union.svg 1st Far Eastern Front

Red Army flag (reverse).svg 2nd Far Eastern Front

War flag of the Imperial Japanese Army (1868-1945).svg Kwangtung Army

War flag of the Imperial Japanese Army (1868-1945).svg Fifth Area Army
Flag of Manchukuo.svg Manchukuo Imperial Army
Flag of the Mengjiang.svg Mengjiang National Army
Soviet Union:
  • 1,577,225 men [3]
  • 26,137 artillery
  • 1,852 sup. artillery
  • 5,556 tanks and self-propelled artillery
  • 5,368 aircraft
  • 16,000 men
  • 993,000 men [lower-alpha 1]
  • 5,360 artillery
  • 1,155 tanks
  • 1,800 aircraft
  • 1,215 vehicles
  • 170,000 [1] -200,000 troops [4]
Casualties and losses
  • 9,780 killed
  • 911 missing
  • 1,340 non-combat deaths (accidents/disease)
  • 24,425 sanitary losses, including
  • 19,562 wounded
  • 4,863 sick
  • 36,456 losses altogether
  • of which 30,253 combat losses [5] [6]
Japanese claim:

Soviet claim:
  • 83,737 killed
  • 640,000 captured

The Soviet–Japanese War (Russian : Советско-японская война; Japanese : ソ連対日参戦, soren tai nichi sansen "Soviet Union entry into war against Japan") was a military conflict within the Second World War beginning soon after midnight on August 9, 1945, with the Soviet invasion of the Japanese puppet state of Manchukuo. The Soviets and Mongolians ended Japanese control of Manchukuo, Mengjiang (Inner Mongolia), northern Korea, Karafuto, and the Chishima Islands (Kuril Islands). The defeat of Japan's Kwantung Army helped bring about the Japanese surrender and the termination of World War II. [9] [10] The Soviet entry into the war was a significant factor in the Japanese government's decision to surrender unconditionally, as it made apparent that the Soviet Union was not willing to act as a third party in negotiating an end to hostilities on conditional terms. [1] [2] [11] [12] [13] [14] [15] [16]



At the Tehran Conference in November 1943, Joseph Stalin agreed that the Soviet Union would enter the war against Japan once Germany was defeated. At the Yalta Conference in February 1945, Stalin agreed to Allied pleas to enter World War II's Pacific Theater within three months of the end of the war in Europe. On July 26, the US, UK and China made the Potsdam Declaration, an ultimatum calling for the Japanese surrender which if ignored would lead to their "prompt and utter destruction".

The commencement of the invasion fell between the US atomic bombings of Hiroshima on August 6 and Nagasaki on August 9. Although Stalin had been told virtually nothing of the US and UK's atomic bomb program by Allied governments, the date of the invasion was foreshadowed by the Yalta agreement, the date of the German surrender, and the fact that, on August 3, Marshal Vasilevsky reported to Stalin that, if necessary, he could attack on the morning of August 5. The timing was well-planned and enabled the Soviet Union to enter the Pacific Theater on the side of the Allies, as previously agreed, before the war's end. [17] The invasion of the second largest Japanese island of Hokkaido, originally planned by the Soviets to be part of the territory taken, [18] was held off due to apprehension of the US' new position as an atomic power. [19] [20] [21] [22]

At 11 pm Trans-Baikal time on August 8, 1945, Soviet foreign minister Vyacheslav Molotov informed Japanese ambassador Naotake Satō that the Soviet Union had declared war on Japan, and that from August 9 the Soviet Government would consider itself to be at war with Japan. [23] At one minute past midnight Trans-Baikal time on August 9, 1945, the Soviets commenced their invasion simultaneously on three fronts to the east, west and north of Manchuria. The operation was subdivided into smaller operational and tactical parts:

and subsequently

Though the battle extended beyond the borders traditionally known as Manchuria – that is, the traditional lands of the Manchus – the coordinated and integrated invasions of Japan's northern territories has also been called the Battle of Manchuria. [24] Since 1983, the operation has sometimes been called Operation August Storm, after American Army historian Lieutenant-Colonel David Glantz used this title for a paper on the subject. [1] It has also been referred to by its Soviet name, the Manchurian Strategic Offensive Operation, but this name refers more to the Soviet invasion of Manchuria than to the whole war.

This offensive should not be confused with the Soviet–Japanese Border Wars (particularly the Battle of Khalkhin Gol/Nomonhan Incident of May–September 1939), that ended in Japan's defeat in 1939, and led to the Soviet–Japanese Neutrality Pact. [25]

Background and buildup

The Russo-Japanese War of the early 20th century resulted in a Japanese victory and the Treaty of Portsmouth by which, in conjunction with other later events including the Mukden Incident and Japanese invasion of Manchuria in September 1931, Japan eventually gained control of Korea, Manchuria and South Sakhalin. In the late 1930s there were a number of Soviet-Japanese border incidents, the most significant being the Battle of Lake Khasan (Changkufeng Incident, July–August 1938) and the Battle of Khalkhin Gol (Nomonhan Incident, May–September 1939), which led to the Soviet–Japanese Neutrality Pact [25] [26] of April 1941. The Neutrality Pact freed up forces from the border incidents and enabled the Soviets to concentrate on their war with Germany, and the Japanese to concentrate on their southern expansion into Asia and the Pacific Ocean.

With success at Stalingrad, and the eventual defeat of Germany becoming increasingly certain, the Soviet attitude to Japan changed, both publicly, with Stalin making speeches denouncing Japan, and "privately", with the Soviets building up forces and supplies in the Far East. At the Tehran Conference (November 1943), amongst other things, Stalin, Winston Churchill, and Franklin Roosevelt agreed that the Soviet Union would enter the war against Japan once Germany was defeated. Stalin faced a dilemma – he wanted to avoid a two-front war at almost any cost yet the Soviet leader also wanted to extract gains in the Far East as well as Europe. The only way Stalin could make Far Eastern gains without a two-front war would be for Germany to capitulate before Japan.

Due to the Soviet–Japanese Neutrality Pact, the Soviets made it policy to intern Allied aircrews who landed in Soviet territory following operations against Japan, although airmen held in the Soviet Union under such circumstances were usually allowed to "escape" after some period of time. [27] Nevertheless, even before the defeat of Germany the Soviet buildup in the Far East steadily accelerated. By early 1945 it had become apparent to the Japanese that the Soviets were preparing to invade Manchuria, though they were unlikely to attack prior to Germany's defeat. In addition to their problems in the Pacific, the Japanese realised they needed to determine when and where a Soviet invasion would occur.

At the Yalta Conference (February 1945), amongst other things, Stalin secured from Roosevelt the promise of Stalin's Far Eastern territorial desires, in return agreeing to enter the Pacific War within two or three months of the defeat of Germany. By the middle of March 1945, things were not going well in the Pacific for the Japanese, and they withdrew their elite troops from Manchuria to support actions in the Pacific. Meanwhile, the Soviets continued their Far Eastern buildup. The Soviets had decided that they did not wish to renew the Neutrality Pact. The terms of the Neutrality Pact required that 12 months before its expiry, the Soviets must advise the Japanese of this, so on 5 April 1945 they informed the Japanese that they did not wish to renew the treaty. [28] This caused the Japanese considerable concern, [29] [30] but the Soviets went to great efforts to assure the Japanese that the treaty would still be in force for another twelve months, and that the Japanese had nothing to worry about. [31]

On 9 May 1945 (Moscow time), Germany surrendered, meaning that if the Soviets were to honour the Yalta agreement, they would need to enter war with Japan by 9 August 1945. The situation continued to deteriorate for the Japanese, and they were now the only Axis power left in the war. They were keen to remain at peace with the Soviets and extend the Neutrality Pact, [31] and they were also keen to achieve an end to the war. Since Yalta they had repeatedly approached, or tried to approach, the Soviets in order to extend the Neutrality Pact, and to enlist the Soviets in negotiating peace with the Allies. The Soviets did nothing to discourage these Japanese hopes, and drew the process out as long as possible (whilst continuing to prepare their invasion forces). [31] One of the roles of the Cabinet of Admiral Baron Suzuki, which took office in April 1945, was to try to secure any peace terms short of unconditional surrender. [32] In late June, they approached the Soviets (the Neutrality Pact was still in place), inviting them to negotiate peace with the Allies in support of Japan, providing them with specific proposals and in return they offered the Soviets very attractive territorial concessions. Stalin expressed interest, and the Japanese awaited the Soviet response. The Soviets continued to avoid providing a response. The Potsdam Conference was held from 16 July to 2 August 1945. On 24 July the Soviet Union recalled all embassy staff and families from Japan. On 26 July the conference produced the Potsdam Declaration whereby Churchill, Harry S. Truman and Chiang Kai-shek (the Soviet Union was not officially at war with Japan) demanded the unconditional surrender of Japan. The Japanese continued to wait for the Soviet response, and avoided responding to the declaration. [31]

The Japanese had been monitoring Trans-Siberian Railway traffic and Soviet activity to the east of Manchuria and in conjunction with the Soviet delaying tactics, this suggested to them that the Soviets would not be ready to invade east Manchuria before the end of August. They did not have any real idea, and no confirming evidence, as to when or where any invasion would occur. [12] They had estimated that an attack was not likely in August 1945 or before Spring 1946; but Stavka had planned for a mid-August 1945 offensive and had concealed the buildup of a force of 90 divisions. Many had crossed Siberia in their vehicles to avoid straining the rail link. [33]

The Japanese were caught completely by surprise when the Soviets declared war an hour before midnight on 8 August 1945, and invaded simultaneously on three fronts just after midnight on 9 August.

Combatant forces

See Soviet invasion of Manchuria#Combatant forces for the tactical details of the combatant forces and of the invasion.


The Far East Command, [2] under Marshal of the Soviet Union Aleksandr Vasilevsky, had a plan for the conquest of Manchuria that was simple but huge in scale, [1] calling for a massive pincer movement over all of Manchuria. This pincer movement was to be performed by the Transbaikal Front from the west and by the 1st Far East Front from the east; the 2nd Far East Front was to attack the center of the pocket from the north. [2] The only Soviet equivalent of a theater command that operated during the war (apart from the short-lived 1941 "Directions" in the west), Far East Command, consisted of three Red Army fronts.

Western Front of Manchuria

The Transbaikal Front , under Marshal R. Y. Malinovsky, was to form the western half of the Soviet pincer movement, attacking across the Inner Mongolian desert and over the Greater Khingan mountains. [2] These forces had the objective to secure Mukden (present day Shenyang), then meet troops of the 1st Far East Front at the Changchun area in south central Manchuria, [1] and in doing so finish the double envelopment. [1]

Eastern Front of Manchuria

The 1st Far East Front , under Marshal K. A. Meretskov, was to form the eastern half of the pincer movement. This attack involved striking towards Mudanjiang (or Mutanchiang), [1] and once that city was captured, the force was to advance towards the cities of Jilin (or Kirin), Changchun and Harbin. [1] Its final objective was to link up with forces of the Trans-Baikal Front at Changchun and Jilin (or Kirin) thus closing the double envelopment movement.

As a secondary objective, the 1st Far East Front was to prevent Japanese forces from escaping to Korea, and then invade the Korean Peninsula up to the 38th parallel, [1] establishing in the process what later became North Korea.

Northern Front of Manchuria

The 2nd Far East Front , under General M. A. Purkayev, was in a supporting attack role. [1] Its objectives were the cities of Harbin and Tsitsihar, [2] and the prevention of an orderly withdrawal to the south by the Japanese forces. [1]

Once troops from the 1st Far East Front and Trans-Baikal Front captured the city of Changchun, the 2nd Far East Front were to attack the Liaotung Peninsula and seize Port Arthur (present day Lüshun). [1]

Each Front had "front units" attached directly to the Front instead of an army. [1] The forces totaled 89 divisions with 1.5 million men, 3,704 tanks, 1,852 self propelled guns, 85,819 vehicles and 3,721 aircraft. Approximately one-third of its strength was in combat support and services. [1] Its naval forces contained 12 major surface combatants, 78 submarines, numerous amphibious craft, and the Amur River flotilla, consisting of gunboats and numerous small craft. [1] The Soviet plan incorporated all the experience in maneuver warfare that the Soviets had acquired fighting the Germans, and also used new improved weapons, such as the RPD light machine gun, the new main battle tank T-44 and a small number of JS-3 heavy tanks. [1]


The Kwantung Army of the Imperial Japanese Army, under General Otozō Yamada, was the major part of the Japanese occupation forces in Manchuria and Korea, and consisted of two Area Armies: the First Area Army (northeastern Manchukuo) and the Third Area Army (southwestern Manchukuo), and three independent armies (responsible for northern Manchuria, North Korea, Mengjiang, South Sakhalin and the Kurils). [1]

Each Area Army (Homen Gun, the equivalent of a Western "army") had headquarters units and units attached directly to the Area Army, in addition to the field armies (the equivalent of a Western corps). In addition to the Japanese, there was the forty-thousand-strong Manchukuo Defense Force, composed of eight under-strength, poorly equipped, poorly trained Manchukuoan divisions.

The Kwantung Army had less than eight hundred thousand (800,000) men in twenty-five divisions (including two tank divisions) and six Independent Mixed Brigades. These contained over 1,215 armored vehicles (mostly armored cars and light tanks), 6,700 artillery pieces (mostly light), and 1,800 aircraft (mostly trainers and obsolete types). The Imperial Japanese Navy did not contribute to the defense of Manchuria, the occupation of which it had always opposed on strategic grounds. Additionally, by the time of the invasion, the few remnants of its fleet were stationed and tasked with the defense of the Japanese home islands in the event of an invasion by Allied forces.

On economic grounds, Manchuria was worth defending since it had the bulk of usable industry and raw materials outside Japan and was still under Japanese control in 1945. The Japanese forces (Kwantung Army) were far below authorized strength; most of their heavy military equipment and all of their best military units had been transferred to the Pacific front over the previous three years to contend with the advance of American and Allied forces. By 1945, the Kwantung Army contained a large number of raw recruits and conscripts, with generally obsolete, light, or otherwise limited equipment. As a result, it had essentially been reduced to a light infantry counter-insurgency force with limited mobility or ability to fight a conventional land war against a coordinated enemy.

Compounding the problem, the Japanese military made many wrong assumptions and major mistakes, the two most significant being:

Due to the withdrawal of the Kwantung Army's elite forces for redeployment into the Pacific Theatre, new operational plans for the defence of Manchuria against a seemingly inevitable Soviet attack were made by the Japanese in the summer of 1945. These called for the redeployment of the majority of forces from the border areas; the borders were to be held lightly and delaying actions fought while the main force was to hold the southeastern corner in strength (so defending Korea from attack). [11]

Further, they had only observed Soviet activity on the Trans-Siberian Railway and along the east Manchurian front, and so were preparing for an invasion from the east. They believed that when an attack occurred from the west, the redeployed forces would be able to deal with it. [12] [11]

Although this redeployment had been initiated, it was not due to be completed until September, and hence the Kwantung Army were in the middle of redeployment when the Soviets launched their attack simultaneously on all three fronts.


The operation was carried out as a classic double pincer movement over an area the size of Western Europe. In the western pincer, the Red Army advanced over the deserts and mountains from Mongolia, far from their resupply railways. This confounded the Japanese military analysis of Soviet logistics, and the defenders were caught by surprise in unfortified positions. The Kwantung Army commanders were involved in a planning exercise at the time of the invasion, and were away from their forces for the first eighteen hours of conflict. Communication infrastructure was poor, and communication was lost with forward units very early on. The Kwantung Army had a formidable reputation as fierce and relentless fighters, and even though under-strengthed and unprepared, put up strong resistance at the town of Hailar which tied down some of the Soviet forces. At the same time, Soviet airborne units were used to seize airfields and city centers in advance of the land forces, and to ferry fuel to those units that had outrun their supply lines. The Soviet pincer from the east crossed the Ussuri and advanced around Khanka Lake and attacked towards Suifenhe, and although Japanese defenders fought hard and provided strong resistance, the Soviets proved overwhelming.

After a week of fighting, during which Soviet forces had penetrated deep into Manchukuo, Japan's Emperor Hirohito recorded the Gyokuon-hōsō which was broadcast on radio to the Japanese nation on August 15, 1945. The idea of surrender was incomprehensible to the Japanese people, and combined with Hirohito's use of formal and archaic language, the fact that he did not use the word "surrender", the poor quality of the broadcast, and poor lines of communication, there was some confusion amongst the Japanese about what the announcement meant. The Imperial Japanese Army Headquarters did not immediately communicate the cease-fire order to the Kwantung Army, and many elements of the Army either did not understand it, or ignored it. Hence, pockets of fierce resistance from the Kwantung Army continued, and the Soviets continued their advance, largely avoiding the pockets of resistance, reaching Mukden, Changchun and Qiqihar by August 20. On the Soviet right flank, the Soviet-Mongolian Cavalry-Mechanized Group had entered Inner Mongolia and quickly took Dolon Nur and Kalgan. The Emperor of Manchukuo (and former Emperor of China), Puyi, was captured by the Soviet Red Army. The cease-fire order was eventually communicated to the Kwantung Army, but not before the Soviet Union had made most of their territorial gains.

On August 18, several Soviet amphibious landings had been conducted ahead of the land advance: three in northern Korea, one in South Sakhalin, and one in the Chishima Islands. This meant that, in Korea at least, there were already Soviet soldiers waiting for the troops coming overland. In Karafuto and the Chishimas, it meant a sudden and undeniable establishment of Soviet sovereignty.

On August 10, the US government proposed to the Soviet government that they divide the occupation of Korea between them at the 38th parallel north. The Americans were surprised that the Soviet government accepted. Soviet troops were able to move freely by rail, and there was nothing to stop them occupying the whole of Korea. [34] Soviet forces began amphibious landings in northern Korea by August 14 and rapidly took over the north-east of the peninsula, and on August 16 they landed at Wonsan. [35] On August 24, the Red Army entered Pyongyang and established a military government over Korea north of the 38th parallel. American forces landed at Incheon on September 8 and took control of the south. [36] [37]

Importance and consequences

Ca. 1,831,000 Soviet personnel have been awarded the Medal "For the Victory over Japan" since 30 September 1945. Victory Against Japan OBVERSE.jpg
Ca. 1,831,000 Soviet personnel have been awarded the Medal "For the Victory over Japan" since 30 September 1945.

From the time of the first major Japanese military defeats in the Pacific in the summer of 1942, the non-military leaders of Japan had come to realise that the Japanese military campaign was economically unsustainable — as Japan did not have the industrial capacity to simultaneously fight the United States, China and the British Empire and Commonwealth — and there were a number of initiatives to negotiate a cessation of hostilities and the consolidation of Japanese territorial and economic gains. Hence, elements of the non-military leadership had first made the decision to surrender as early as 1943; the major issue was the terms and conditions of surrender, not the issue of surrender itself. For a variety of diverse reasons, none of the initiatives were successful, the two major reasons being the Soviet Union's deception and delaying tactics, and the attitudes of the "Big Six", the powerful Japanese military leaders. [13] (Refer to Surrender of Japan for more detail.)

The Manchurian Strategic Offensive Operation, along with the atomic bombings of Hiroshima and Nagasaki, combined to break the Japanese political deadlock and force the Japanese leaders to accept the terms of surrender demanded by the Allies.

In the "Sixty Years after Hiroshima" issue of The Weekly Standard , American historian Richard B. Frank points out that there are a number of schools of thought with varying opinions of what caused the Japanese to surrender. He describes what he calls the "traditionalist" view, which asserts that the Japanese surrendered because the Americans dropped the atomic bombs. He goes on to summarise other points of view. [38] [ example needed ]

Tsuyoshi Hasegawa's research has led him to conclude that the atomic bombings were not the principal reason for Japan's capitulation. He argues that Japan's leaders were impacted more by the swift and devastating Soviet victories on the mainland in the week following Joseph Stalin's August 8 declaration of war because the Japanese strategy to protect the home islands was designed to fend off an Allied invasion from the south, and left virtually no spare troops to counter a Soviet threat from the north. Furthermore, the Japanese could no longer hope to achieve a negotiated peace with the Allies by using the Soviet Union as a mediator with the Soviet declaration of war. This, according to Hasegawa, amounted to a "strategic bankruptcy" for the Japanese and forced their message of surrender on August 15, 1945. [39] [16] Others with similar views include the Battlefield series documentary, [2] [11] among others, though all, including Hasegawa, state that the surrender was not due to any single factor or single event.

The Soviet invasion and occupation of the defunct Manchukuo marked the start of a traumatic period for the more than one million residents of the puppet state who were of Japanese descent. The situation for the Japanese military occupants was clear, but the Japanese colonists who had made Manchukuo their home, particularly those born in Manchukuo, were now stateless and homeless, and the (non-Japanese) Manchurians wanted to be rid of these foreigners. Many residents were killed, while others ended up in Siberian prisons for up to 20 years, and some made their way to the Japanese home islands, where they were also treated as foreigners. [32] [40] [41] [42]

Manchuria was "cleansed" by Soviet forces of any potential military resistance. With Soviet support for the spread of communism, [43] Manchuria provided the main base of operations for Mao Zedong's forces, who proved victorious in the following four years of the Chinese Civil War. These military successes in Manchuria and China by the Communist Chinese led to the Soviet Union giving up their rights to bases in China — promised by the Western Allies — because all of the land deemed by the Soviets to be Chinese (as distinct from what the Soviets considered to be Soviet land which had been occupied by the Japanese), was eventually turned over to the People's Republic of China. [43] Before leaving Manchuria, Soviet forces and bureaucracy dismantled almost all of the portable parts of the considerable Japanese-built industry in Manchuria and relocated it to "restore industry in war-torn Soviet territory". That which was not portable was either disabled or destroyed; the Soviets had no desire for Manchuria to be an economic rival, particularly to the underdeveloped Far Eastern Soviet Territories. [32] After the establishment of the People's Republic of China the bulk of the Soviet economic assistance went to Manchuria to help rebuilding the region's industry. [44]

As agreed at Yalta, the Soviet Union had intervened in the war with Japan within three months of the German surrender, and they were therefore entitled to annex the territories of South Sakhalin and the Kuril Islands and also to preeminent interests over Port Arthur and Dalian, with its strategic rail connections, via the China Changchun Railway, a company owned jointly by China and the Soviet Union that operated all the railways of the former Manchukuo. The territories on the Asian mainland were transferred to the full control of the People's Republic of China in 1955; the other possessions are still administered by the Soviet Union's successor state, Russia. The annexation of South Sakhalin and the Kuril Islands is of great importance as the Sea of Okhotsk consequently became an USSR inland sea. This continues to have great strategic benefit to Russia.

The division of Korea between Soviet and US occupations led to the creation of the separate states of North and South Korea. This was a precursor to the Korean War five years later.

See also


  1. Glantz credits the Japanese with 713,000 men in northern Korea and Manchuria, and 280,000 in southern Korea, South Sakhalin, and the Kuriles.
  2. 41,199 is the listed total of Japanese soldiers in Soviet custody on August 19, two days after the surrender of the Kwantung Army by order of Hirohito and four days after Hirohito announced the surrender of Japan. Post-war, 594,000 to 609,000 Japanese soldiers ended up in Soviet custody.

Related Research Articles

Battles of Khalkhin Gol 1939 battles between the USSR and Japan

The Battles of Khalkhin Gol were the decisive engagements of the undeclared Soviet–Japanese border conflicts fought among the Soviet Union, Mongolia, Japan and Manchukuo in 1939. The conflict was named after the river Khalkhin Gol, which passes through the battlefield. In Japan, the decisive battle of the conflict is known as the Nomonhan Incident after Nomonhan, a nearby village on the border between Mongolia and Manchuria. The battles resulted in the defeat of the Japanese Sixth Army.

Soviet–Japanese Neutrality Pact peace treaty

The Soviet–Japanese Neutrality Pact, also known as the Japanese–Soviet Non-aggression Pact, was a neutrality pact between the Soviet Union and Japan signed on April 13, 1941, two years after the conclusion of the Soviet-Japanese Border War. The agreement meant that for most of World War II, the two nations fought against each other's allies but not each other. In 1945, late in the war, the Soviets scrapped the pact and joined the war against Japan.

Kwantung Leased Territory Japanese possession in Northeastern China until the end of World War II

The Kwantung Leased Territory was a leased territory of the Empire of Japan in the Liaodong Peninsula in 1895 and from 1905 to 1945.

Soviet invasion of Manchuria 1945 invasion; part of the Soviet–Japanese War of World War II

The Soviet invasion of Manchuria, formally known as the Manchurian Strategic Offensive Operation or simply the Manchurian Operation, began on 9 August 1945 with the Soviet invasion of the Japanese puppet state of Manchukuo. It was the last campaign of the Second World War, and the largest of the 1945 Soviet–Japanese War, which resumed hostilities between the Union of Soviet Socialist Republics and the Empire of Japan after almost six years of peace. Soviet gains on the continent were Manchukuo, Mengjiang and northern Korea. The Soviet entry into the war and the defeat of the Kwantung Army was a significant factor in the Japanese government's decision to surrender unconditionally, as it made apparent the Soviet Union had no intention of acting as a third party in negotiating an end to hostilities on conditional terms.

The end of World War II in Asia occurred on 2 September 1945, when armed forces of the Empire of Japan surrendered to the forces of the Allies. The surrender came almost four months after the surrender of the Axis forces in Europe and brought an end to World War II.

The Far Eastern Front was a front — a level of military formation that is equivalent to army group — of the Soviet Army during the Russian Civil War and the Second World War.

The Evacuation of Manchukuo occurred during the Soviet Red Army's invasion of the Japanese puppet state of Manchukuo as part of the wider Manchurian Strategic Offensive Operation of August 1945.

Manchukuo Imperial Army Ground forces of Manchukuo

The Manchukuo Imperial Army was the ground force of the military of the Empire of Manchukuo, a puppet state established by Imperial Japan in Manchuria, a region of northeastern China. The force was primarily used for fighting against Communist and Nationalist guerrillas in Manchukuo but also took part in battle against the Soviet Red Army on several occasions. It initially consisted of former National Revolutionary Army troops of the "Young Marshal" Zhang Xueliang who were recruited after the Japanese invasion of Manchuria en masse, but eventually expanded to include new volunteers and conscripts. The Imperial Army increased in size from about 111,000 troops in 1933 to an estimated strength of between 170,000–220,000 soldiers at its peak in 1945, being composed of Han Chinese, Manchus, Mongols, Koreans, Japanese, and White Russians. Throughout its existence the majority of its troops were considered to be mostly unreliable by their Japanese officers and advisers, due to poor training, equipment, and morale.

Soviet–Japanese border conflicts war

The Soviet–Japanese border conflicts, also known as the Soviet-Japanese Border War, was an undeclared border conflict fought between the Soviet Union and Japan in Northeast Asia from 1932 to 1939.

The Japanese First Area Army was a field army of the Imperial Japanese Army during World War II, based in northern Manchukuo and active in combat against the Soviet Union in the closing stages of the war.

Thirtieth Army (Japan) 1945 Imperial Japanese Army formation

The Japanese 30th Army was an army of the Imperial Japanese Army during the final days of World War II.

Forty-Fourth Army (Japan)

The Japanese 44th Army was an army of the Imperial Japanese Army during the final stages of World War II.

Third Army (Japan) 1904-1945 Imperial Japanese Army formation

The Japanese 3rd Army was an army of the Imperial Japanese Army based in Manchukuo as a garrison force under the overall command of the Kwantung Army during World War II, but its history dates to the Russo-Japanese War.

The Japanese Third Area Army was a field army of the Imperial Japanese Army during World War II, based in southern Manchukuo and active in combat against the Soviet Union in the very final stages of the war.

Kwantung Army 1919-1945 Imperial Japanese Army formation

The Kwantung Army was the largest army group of the Imperial Japanese Army from 1919 to 1945.

Alexey Nikolayevich Krutikov was a Soviet military leader.

Soviet occupation of Manchuria

The Soviet occupation of Manchuria took place after the Red Army invaded the Japanese puppet state of Manchukuo in August 1945 and would continue until the last of the Soviet forces left in May 1946.

Battle of Mutanchiang

The Battle of Mutanchiang was a large-scale military engagement fought between the forces of the Union of Soviet Socialist Republics and the Empire of Japan from August 12 to 16, 1945, as part of the Soviet invasion of Manchuria in World War II. Due to the short nature of that campaign, this was one of the only set-piece battles that transpired before its conclusion. During the battle, elements of the Japanese Fifth Army attempted to delay the Soviet Fifth Army and First Red Banner Army long enough to allow the bulk of the Japanese forces to retreat to more defensible positions. Though casualties on both sides were heavy, the Red Army forces were able to break through the hastily organized Japanese defenses and capture the city ten days ahead of schedule. Nevertheless, the Japanese defenders at Mutanchiang achieved their goal of allowing the main forces to escape.

Mongolia in World War II involvement of Mongolia in World War II

Outer Mongolia—officially the Mongolian People's Republic—was ruled by the communist government of Khorloogiin Choibalsan during World War II and was closely linked to the Soviet Union. Mongolia, with less than a million inhabitants, was considered a breakaway province of the Republic of China by most nations. Throughout the war with Germany, the country provided the Soviet Union with economic support, such as livestock, raw materials, money, food and military clothing, violating Mongolian neutrality in favor of the Allies. Mongolia was one of two Soviet satellites not generally recognised as sovereign nations at the time, the other being the Tuvan People's Republic, both of which participated in World War II.

Kantokuen Planned WWII Japanese military campaign

KANTOKUEN was an operational plan created by the General Staff of the Imperial Japanese Army for an invasion and occupation of the far eastern region of the Soviet Union, capitalizing on the outbreak of the Soviet-German War in June 1941. Involving seven Japanese armies as well as a major portion of the empire's naval and air forces, it would have been the largest single combined arms operation in Japanese history, and one of the largest of all time.


  1. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 LTC David M. Glantz, "August Storm: The Soviet 1945 Strategic Offensive in Manchuria". Leavenworth Papers No. 7, Combat Studies Institute, February 1983, Fort Leavenworth Kansas.
  2. 1 2 3 4 5 6 7 "Battlefield Manchuria – The Forgotten Victory", Battlefield (U.S. TV series), 2001, 98 minutes.
  3. 1 2 Glantz, David M. & House, Jonathan (1995), When Titans Clashed: How the Red Army Stopped Hitler, Lawrence, Kansas: University Press of Kansas, ISBN   0-7006-0899-0, p. 378
  4. Jowett, p. 53.
  5. Glantz, David M. & House, Jonathan (1995), When Titans Clashed: How the Red Army Stopped Hitler, Lawrence, Kansas: University Press of Kansas, ISBN   0-7006-0899-0, p. 300
  6. G.F. Krivosheev, ed., "Russia and the USSR in twentieth century wars: A statistical survey". Moscow: 'Olma-press', 2001, page 309.
  7. Cherevko, Kirill Evgen'evich (2003). Serp i Molot protiv Samurayskogo Mecha. Moscow: Veche. ISBN   5-94538-328-7. Page 41.
  8. Coox, Alvin D. (1990) [1985]. Nomonhan: Japan Against Russia, 1939. Stanford, California: Stanford University Press. p. 1176. ISBN   9780804718356 . Retrieved 9 February 2017.
  9. The Associated Press (8 August 2005). "A Soviet Push Helped Force Japan to Surrender". The Moscow Times. Archived from the original on 12 December 2013.
  10. Lekic, Slobodan (22 August 2010). "How the Soviets helped Allies defeat Japan". San Francisco Chronicle.
  11. 1 2 3 4 Hayashi, S. (1955). Study of Strategic and Tactical peculiarities of Far Eastern Russia and Soviet Far East Forces. Japanese Special Studies on Manchuria (Report). XIII. Tokyo: Military History Section, Headquarters, Army Forces Far East, US Army.
  12. 1 2 3 Drea, E. J. (1984). "Missing Intentions: Japanese Intelligence and the Soviet Invasion of Manchuria, 1945". Military Affairs. 48 (2): 66–73. doi:10.2307/1987650. JSTOR   1987650.
  13. 1 2 Butow, Robert Joseph Charles (1956). Japan's decision to surrender. Stanford University Press. ISBN   9780804704601.
  14. Richard B. Frank, Downfall: The End of the Imperial Japanese Empire, Penguin, 2001 ISBN   978-0-14-100146-3. (Extracts on-line)
  15. Robert James Maddox, Hiroshima in History: The Myths of Revisionism, University of Missouri Press, 2007 ISBN   978-0-8262-1732-5.
  16. 1 2 Tsuyoshi Hasegawa (2006). Racing the Enemy: Stalin, Truman, and the Surrender of Japan. Belknap Press. p.  298. ISBN   0-674-01693-9.
  17. Holloway, David. Stalin and the bomb: the Soviet Union and atomic energy, 1939–1956. Yale University Press, 1996. (p. 127–129)
  18. Archive, Wilson Center Digital. Wilson Center Digital Archive,
  19. Archive, Wilson Center Digital. Wilson Center Digital Archive,
  20. Archive, Wilson Center Digital. Wilson Center Digital Archive,
  21. Archive, Wilson Center Digital. Wilson Center Digital Archive,
  22. Radchenko, Sergey. "Did Hiroshima Save Japan From Soviet Occupation?" Foreign Policy, September 23, 2015
  23. Soviet Declaration of War on Japan, August 8, 1945. (Avalon Project at Yale University)
  24. Maurer, Herrymon, Collision of East and West, Henry Regnery Company, Chicago, 1951, p.238.
  25. 1 2 Soviet-Japanese Neutrality Pact, April 13, 1941. (Avalon Project at Yale University)
  26. Declaration Regarding Mongolia, April 13, 1941. (Avalon Project at Yale University)
  27. Goodby, James E; Ivanov, Vladimir I; Shimotomai, Nobuo (1995). "Northern Territories" and Beyond: Russian, Japanese, and American Perspectives. Westport, Conn.: Greenwood Publishing Group. p. 36. ISBN   027595093X.
  28. Soviet Denunciation of the Pact with Japan, April 5, 1945. (Avalon Project at Yale University)
  29. So sorry, Mr Sato, April 1945, Time magazine.
  30. Russia and Japan Archived 2011-09-13 at the Wayback Machine , declassified CIA report from April 1945.
  31. 1 2 3 4 Boris Nikolaevich Slavinskiĭ, The Japanese-Soviet Neutrality Pact: A Diplomatic History 1941–1945, Translated by Geoffrey Jukes, 2004, Routledge. (Extracts on-line)
  32. 1 2 3 Jones, F. C. "Manchuria since 1931", 1949, Royal Institute of International Affairs, London. pg.221
  33. Glantz, David M. (1995). When Titans Clashed: How the Red Army Stopped Hitler. Kansas, USA: University Press of Kansas. p.  278. ISBN   0-7006-0899-0.
  34. Robinson, Michael E (2007). Korea's Twentieth-Century Odyssey . Honolulu: University of Hawaii Press. pp.  104–105. ISBN   978-0-8248-3174-5.
  35. Seth, Michael J. (2010). A Concise History of Modern Korea: From the Late Nineteenth Century to the Present. Hawaìi studies on Korea. Rowman & Littlefield. p. 86. ISBN   9780742567139 . Retrieved 2015-11-16.
  36. Buzo, Adrian (2002). The Making of Modern Korea. London: Routledge. p. 50. ISBN   0-415-23749-1.
  37. Hyung Gu Lynn (2007). Bipolar Orders: The Two Koreas since 1989. Zed Books. p. 18.
  38. Richard B. Frank (8 August 2005). "Why Truman Dropped the Bomb". The Weekly Standard. 010 (44). Archived from the original on 31 July 2005.
  39. Hasegawa, Tsuyoshi (17 August 2007). "The Atomic Bombs and the Soviet Invasion: What Drove Japan's Decision to Surrender?". Japan Focus.
  40. Kuramoto, K. (1990). Manchurian Legacy : Memoirs of a Japanese Colonist. East Lansing, Michigan State University Press.
  41. Shin'ichi, Y. (2006). Manchuria under Japanese Dominion. Philadelphia, University of Pennsylvania Press.
  42. Tamanoi, M A. (2009). Memory Maps : The State and Manchuria in Postwar Japan. Honolulu, University of Hawai'i Press.
  43. 1 2 Borisov, O. (1977). The Soviet Union and the Manchurian Revolutionary Base (1945–1949). Moscow, Progress Publishers.
  44. M.V.Aleksandrova (2013) Economy of Northeastern China and Soviet assistance to the PRC in the 1950s

Further reading

All are in English:

Japanese Monographs

The "Japanese Monographs" and the "Japanese Studies on Manchuria" – The 187 Japan Monographs are a series of operational histories written by former officers of the Japanese army and navy under the direction of General Headquarters of the U.S. Far East Command.