South Sakhalin Operation
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The Soviet invasion of South Sakhalin, also known as the Battle of Sakhalin (russian: Южно-Сахалинская операция; ja, 樺太の戦い), was the
Soviet The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, ...
invasion of the Japanese portion of
Sakhalin Island Sakhalin ( rus, Сахали́н, r=Sakhalín, p=səxɐˈlʲin; ja, 樺太 ''Karafuto''; zh, c=, p=Kùyèdǎo, s=库页岛, t=庫頁島; Manchu: ᠰᠠᡥᠠᠯᡳᠶᠠᠨ, ''Sahaliyan''; Orok: Бугата на̄, ''Bugata nā''; Nivkh: ...
known as Karafuto Prefecture. The invasion was part of the Soviet–Japanese War, a massive campaign of the
Second World War World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...
.


Background

In the
Treaty of Portsmouth A treaty is a formal, legally binding written agreement between actors in international law. It is usually made by and between sovereign states, but can include international organizations, individuals, business entities, and other legal perso ...
in 1905, control of the island was split, with the
Russian Empire The Russian Empire was an empire and the final period of the Russian monarchy from 1721 to 1917, ruling across large parts of Eurasia. It succeeded the Tsardom of Russia following the Treaty of Nystad, which ended the Great Northern War. ...
controlling the northern half and the Japanese controlling the portion south of the
50th parallel north The 50th parallel north is a circle of latitude that is 50 degrees north of the Earth's equatorial plane. It crosses Europe, Asia, the Pacific Ocean, North America, and the Atlantic Ocean. At this latitude the sun is visible for 16 hours, 22 m ...
. It was known in Japan as Karafuto Prefecture and the Northern District. During the
Yalta Conference The Yalta Conference (codenamed Argonaut), also known as the Crimea Conference, held 4–11 February 1945, was the World War II meeting of the heads of government of the United States, the United Kingdom, and the Soviet Union to discuss the post ...
in 1945, Soviet Premier
Joseph Stalin Joseph Vissarionovich Stalin (born Ioseb Besarionis dze Jughashvili; – 5 March 1953) was a Georgian revolutionary and Soviet political leader who led the Soviet Union from 1924 until his death in 1953. He held power as General Secreta ...
pledged to enter the fight against the Empire of Japan "two or three months after Germany has surrendered and the war in Europe is terminated." That would create another strategic front against Japan, which was deemed necessary to end the war. As a result of their participation, the Soviets would be awarded South Sakhalin and the
Kuril Islands The Kuril Islands or Kurile Islands (; rus, Кури́льские острова́, r=Kuril'skiye ostrova, p=kʊˈrʲilʲskʲɪjə ɐstrɐˈva; Japanese: or ) are a volcanic archipelago currently administered as part of Sakhalin Oblast in the ...
, among other concessions. The United States would aid the
Red Army The Workers' and Peasants' Red Army (Russian: Рабо́че-крестья́нская Кра́сная армия),) often shortened to the Red Army, was the army and air force of the Russian Soviet Federative Socialist Republic and, after ...
in Project Hula in preparation for the invasion. On 5 April, the Soviets formally repudiated the
Soviet–Japanese Neutrality Pact The , also known as the , was a non-aggression pact between the Soviet Union and the Empire of 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, ...
. On 9 August, the Soviets launched a full-scale invasion of
Manchuria Manchuria is an exonym (derived from the endo demonym " Manchu") for a historical and geographic region in Northeast Asia encompassing the entirety of present-day Northeast China (Inner Manchuria) and parts of the Russian Far East (Outer Manc ...
, which started the Soviet–Japanese War. That war began three days after the United States atomic bombing of Hiroshima, and it included plans to invade South Sakhalin. The main purpose of the invasion was to clear Japanese resistance and to be prepared within 10 to 14 days to invade Hokkaido, the northernmost of Japan's home islands.


Order of battle


Soviet Union

*2nd Far Eastern Front (commanded by General of the Army
Maksim Purkayev Maksim Alexeyevich Purkayev (russian: Максим Алексеевич Пуркаев; August 14 (26), 1894, in the village of Nalitovo, Russian Empire – January 1, 1953, Moscow) was a Soviet military leader, reaching service rank of Arm ...
) ** 16th Army (commanded by General
Leonty Cheremisov Leonty Georgyevich Cheremisov (russian: Леонтий Георгиевич Черемисов; 1 July 1893 – 17 November 1967) was a Soviet Red Army lieutenant general who led the 16th Army in the Soviet Far East during World War II from 1943 ...
) *** 56th Rifle Corps ****
79th Rifle Division The 79th Motor Rifle Division was a motorized infantry division of the Soviet Army. It was converted from the 79th Rifle Division in 1957 and inherited the honorific "Sakhalin". The division was awarded the Order of the Red Banner. The 79th Rifle ...
****2nd Rifle Brigade ****5th Rifle Brigade ****214th Tank Brigade ****113th Rifle Brigade ***255th Composite Aviation Division (106 aircraft) *Pacific Fleet (commanded by Admiral Ivan Yumashev) **
Northern Pacific Flotilla The Northern Pacific Flotilla () was a flotilla of the Pacific Fleet of the Soviet Navy between 1939 and 1945, with its main base at Sovetskaya Gavan in the Soviet Far East. It defended the Strait of Tartary and the Sea of Okhotsk during World ...
(commanded by Vice-Admiral V.A. Andreev) **Pacific Fleet naval aircraft (80 aircraft) ** 365th Naval Infantry Battalion


Imperial Japan

* 88th Infantry Division of the
Japanese Fifth Area Army The was a field army of the Imperial Japanese Army during the closing stages of World War II. It saw combat against the Soviet Union in Japan’s northern territories. History The Japanese 5th Area Army was formed on March 16, 1944 under the Gen ...
(commanded by Lieutenant General Kiichiro Higuchi) **Karafuto fortified area (17 bunkers, 28 artillery, 18 and mortar positions and others. Facilities, the garrison – 5400 people) of the Border Guard **Detachments of Reservists


Invasion


Karafuto Line

On 11 August, the Soviet 16th Army commenced the ground invasion from northern Sakhalin of the southern portion of Sakhalin Island controlled by Japan. The Soviet advance was halted by the strenuous Japanese defense of the Karafuto Fortress defense line. The Soviet 16th Army which consisted of roughly 20,000 men and supported by 100 tanks outnumbered the Japanese defenders 3 to 1. However the Soviet advance was minimal and held off for four days on the Karafuto line. On 15 August, Imperial Japanese headquarters issued the order to halt all offensive combat operations and engage in a cease-fire dialogue; however, the 5th Area Army issued a contrary order to the 88th Division to defend Sakhalin to the last man. The same day 3,000 Japanese troops surrendered the Karafuto Line. Japanese military casualties were 568 dead.


Soviet naval invasion and blockade

In order to speed up the invasion of Sakhalin island and relieve pressure on the ground invasion the Soviet Navy launched an amphibious assault operation against the key Japanese ports. A naval blockade of Sakhalin island was put into place to prevent the evacuation of Japanese troops. Civilian convoys were targeted by Soviet submarines in the Aniva Gulf. On 16 August, the Soviet coast guard ship '' Zarnitsa'', four minesweepers, two transports, six gunboats and nineteen torpedo boats docked in Port Toro. Around 1,400 Soviet troops of the 365th Separate Marine Battalion and one battalion of the 113th Rifle Brigade landed in Toro (now
Shakhtyorsk Shakhtyorsk (russian: Шахтёрск; ja, 塔路, ''Tōro'') is a town in Uglegorsky District of Sakhalin Oblast, Russia, located on the western coast of the Sakhalin Island, northwest of Yuzhno-Sakhalinsk, the administrative center of th ...
) and engaged a Japanese garrison of 200 men. Toro was captured and the next day they captured four populated areas and the port city of Esutoru (now Uglegorsk), Anbetsu (now Vozvrashcheniye) and Yerinai. Japanese casualties were 100 killed, 150 wounded and 30 captured. Soviet casualties were 12 killed. On 20 August, 3,400 troops of the Soviet Navy combined marine battalion and the 113th Rifle Brigade landed in Port
Maoka Kholmsk (russian: Холмск), known until 1946 as Maoka ( ja, 真岡), is a port town and the administrative center of Kholmsky District of Sakhalin Oblast, Russia. It is located on the southwest coast of the Sakhalin Island, on coast of the gu ...
(now Kholmsk). The landing party was met with fierce Japanese defense. A few naval vessels were damaged which led to the Soviet response of intense naval bombardment of the city, causing approximately 600 to 1,000 civilian deaths. Maoka was captured on 22 August, with heavy Japanese resistance continuing throughout the city. Japanese military casualties in this battle were 300 killed and 600 captured. Soviet casualties were 60 army soldiers killed and 17 naval infantry killed. On 25 August, 1,600 Soviet troops landed in Otomari (now Korsakov). The Japanese garrison of 3,400 men surrendered. The same day the remnants of the Japanese 88th Division surrendered to the 16th Army and the city of Toyohara was captured without resistance officially ending the Invasion of Sakhalin.


Aftermath and casualties

Japanese casualties are approximately 700 to 2,000 soldiers killed and 3,500 to 3,700 civilians killed. Around 18,202 were captured and many of the Japanese prisoners of war in Sakhalin were sent to labor camps in
Siberia Siberia ( ; rus, Сибирь, r=Sibir', p=sʲɪˈbʲirʲ, a=Ru-Сибирь.ogg) is an extensive geographical region, constituting all of North Asia, from the Ural Mountains in the west to the Pacific Ocean in the east. It has been a part of ...
and held after the war. At least 100,000 Japanese civilians fled the Soviet occupation during the invasion. The capture of Sakhalin Island proved a necessary prerequisite for the
Invasion of the Kuril Islands The Invasion of the Kuril Islands (russian: Курильская десантная операция, lit=Kuril Islands Landing Operation) was the World War II Soviet military operation to capture the Kuril Islands from Japan in 1945. The inv ...
. After the Japanese surrender, Sakhalin Island remained under Soviet control and is now
Russia Russia (, , ), or the Russian Federation, is a List of transcontinental countries, transcontinental country spanning Eastern Europe and North Asia, Northern Asia. It is the List of countries and dependencies by area, largest country in the ...
n territory, part of Sakhalin Oblast.


See also

*
Battle of Shumshu The Battle of Shumshu, the Soviet invasion of Shumshu in the Kuril Islands, was the first stage of the Soviet Union's Invasion of the Kuril Islands in August–September 1945 during World War II. It took place from 18 to 23 August 1945, and wa ...
*
Invasion of the Kuril Islands The Invasion of the Kuril Islands (russian: Курильская десантная операция, lit=Kuril Islands Landing Operation) was the World War II Soviet military operation to capture the Kuril Islands from Japan in 1945. The inv ...
*
Evacuation of Karafuto and Kuriles The evacuation of Karafuto (Sakhalin) and the Kuriles refers to the events that took place during the Pacific theater of World War II as the Japanese population left these areas, to August 1945 in the northwest of the main islands of Japan. Th ...
* Project Hula *
Soviet assault on Maoka The Soviet assault on Maoka (Maoka Landing, russian: Десант в порт Маока) was carried out at the port of Maoka (now Kholmsk), Southern Sakhalin during August 19-22, 1945, by the forces of the Soviet Northern Pacific Flotilla of t ...


References


External links

{{DEFAULTSORT:South Sakhalin Japan campaign South Sakhalin Japan–Soviet Union relations Karafuto 1945 in Japan 1945 in the Soviet Union Conflicts in 1945 Invasions by the Soviet Union Amphibious operations of World War II August 1945 events in Asia Sakhalin Oblast