Last time we spoke about the Siege of Japan. In the summer of 1945, Japan faced its most devastating siege. A pivotal component was the aerial mining campaign entitled "Starvation," masterminded by General Curtis LeMay. B-29 Superfortress bombers were deployed to lay mines in critical waterways, cutting off resources and crippling Japan’s industrial capabilities. This silent assault inflicted chaos on Japan’s shipping lanes, sinking over 670 vessels and significantly disrupting supply lines. Amid this turmoil, the Allies intensified their firebombing campaigns, targeting urban centers like Tokyo, Osaka, and Kobe, leading to extensive devastation and loss of life. By August, Japan's civilian and military morale crumbled under the weight of destruction. The climax of this siege came with the atomic bombing of Hiroshima, which unleashed unparalleled destruction. As Japan’s leadership struggled for options, the nation was effectively brought to its knees. The relentless siege had achieved its goal, Japan was irrevocably broken, marking a profound moment in history.

This episode is the Atomic Bombing of Nagasaki

Welcome to the Pacific War Podcast Week by Week, I am your dutiful host Craig Watson. But, before we start I want to also remind you this podcast is only made possible through the efforts of Kings and Generals over at Youtube. Perhaps you want to learn more about world war two? Kings and Generals have an assortment of episodes on world war two and much more so go give them a look over on Youtube. So please subscribe to Kings and Generals over at Youtube and to continue helping us produce this content please check out www.patreon.com/kingsandgenerals. If you are still hungry for some more history related content, over on my channel, the Pacific War Channel you can find a few videos all the way from the Opium Wars of the 1800’s until the end of the Pacific War in 1945.

Hello there, again like in the previous episode, this one is just going to state what happened, I am not going to delve into the why’s just yet. I am currently writing an entire special episode on why exactly Japan surrendered, focused on the actions of Emperor Hirohito, who I will argue prolonged the 15 year war to protect the Kokutai. So a bit of a spoiler there I guess.

The worst has come to pass for the Japanese Empire. An atomic bomb has fallen, devastating an entire city. In a blinding flash, over 140,000 lives were lost or forever altered. But this was merely the beginning. The Americans were poised to unleash destruction from the skies, a scale of devastation never before witnessed on this planet. The choices were grim: surrender or complete annihilation.The Japanese faced not only this overwhelming threat but also another peril. The Soviet Union prepared to invade Manchuria and other crucial territories within its reach.

As we last left off, the Americans had been conducting a prolonged and devastating air and naval siege of the Japanese Home Islands in preparation for the invasion of Kyushu. This campaign culminated in the atomic bombing of Hiroshima on August 6, reducing the once-great city to ruins and leaving a staggering casualty toll that would forever haunt the Japanese people. Survivor accounts recount the haunting experience of wandering through the destruction, disoriented and unsure of where to go. They spoke of hearing the desperate cries of those trapped beneath crushed buildings or suffering from horrific burns. As small fires ignited by the blast began to spread, they coalesced into a firestorm that surged through the rubble, claiming the lives of many still trapped inside. Frightened residents jumped into the rivers of Hiroshima, only to drown in their desperate attempts to escape the flames. Over 90% of the doctors and 93% of the nurses in Hiroshima perished or were injured, and most hospitals were either destroyed or heavily damaged. By early afternoon, police and volunteers worked tirelessly to establish evacuation centers at hospitals, schools, and tram stations. Yet, tragically, many would die before receiving aid, leaving behind grim rings of corpses around these facilities. Some survivors who initially appeared unharmed would succumb within hours or days to what would later be identified as radiation sickness. Most members of General Hata’s 2nd General Army headquarters were undergoing physical training on the grounds of Hiroshima Castle, barely 900 yards from the hypocenter. As a result, 3,243 troops lost their lives on the parade ground. Miraculously, Hata himself survived the explosion with only minor injuries, but many of his staff were not so fortunate, including Lieutenant-Colonel Yi U, a prince of the Korean imperial family, who was killed or fatally wounded.

In total, the 2nd General Army, 59th Army, 5th Division, and other combat units in the city lost an estimated 20,000 troops. Survivors regrouped at the Ujina Air Base on the outskirts of Hiroshima, where they organized relief efforts and maintained public order once martial law was declared. With Mayor Awaya Senkichi killed at the mayoral residence, Hata assumed control of the city’s administration and coordinated relief efforts. The initial reaction of the Japanese government to the devastation in Hiroshima was mixed. The Imperial Japanese Army and Imperial Japanese Navy military leadership received only fragmentary reports about the tragedy, as communications with Hiroshima had been severed. Meanwhile, American and British radio broadcasts promptly informed ordinary Japanese civilians and their government about the atomic bomb attack on August 7.

The following day, Tokyo issued a press release confirming the bombing of Hiroshima, but it notably did not state that the United States had dropped an atomic weapon. After technical teams visited the site of the bombing, they concluded that the enemy B-29s had indeed used a nuclear device. At this juncture, the diplomatic situation within Japan was chaotic. Many members of the Japanese cabinet believed that surrender was the only viable option, while others, particularly military figures like Hata, were determined to continue the fight. Looking back, between July 17 and August 2, Soviet leader Joseph Stalin, British Prime Minister Winston Churchill, and U.S. President Harry Truman convened in Potsdam to negotiate terms for the end of World War II. The Potsdam Conference is perhaps best known for President Truman’s conversation with Soviet leader Joseph Stalin on July 24, during which Truman informed Stalin that the United States had successfully detonated the first atomic bomb on July 16. Prior to leaving for the conference, a top-level civilian Interim Committee, led by Secretary of War Henry Stimson, suggested that Truman inform Stalin about America’s new nuclear capability. This was intended to prevent the Soviets from learning about the bomb through leaked information, and Truman agreed to share this news. Historians have often interpreted Truman’s somewhat firm stance during negotiations as a reflection of the U.S. negotiating team’s belief that their nuclear capability would enhance their bargaining power. However, Stalin was already well-informed about the American nuclear program, courtesy of the Soviet intelligence network. This understanding enabled him to hold firm in his positions, complicating the negotiations. In the end, the leaders of the United States, Great Britain, and the Soviet Union, despite their differences, remained allied throughout the war. However, they would never meet again collectively to discuss cooperation in postwar reconstruction. One of the critical topics discussed was how to handle Japan. During the conference, Truman sought and received Stalin's final assurance of entering the war on August 9, in accordance with the agreements made among the Allies during the Yalta Conference in February 1945.

On April 5, Soviet Foreign Minister Vyacheslav Molotov informed Tokyo of the Soviet Union's unilateral abrogation of the Soviet-Japanese Neutrality Pact. He assured Japan that the treaty would remain in effect until April 1946, even though the Soviets were already planning an offensive in the Far East. A Soviet invasion would prove beneficial for the Americans, as it could prevent the movement of hostile troops from Manchuria, Korea, and North China to the Home Islands of Japan before an invasion of Kyushu was launched. On July 26, the United States, Great Britain, and China released a declaration demanding Japan's immediate surrender. The declaration called for the dismemberment of Japan's remaining empire, the demobilization of all military forces, trials for war criminals, and the elimination of Japan's capacity for future belligerence. While the declaration did not alter the requirement for unconditional surrender, critically it left ambiguous how the Japanese people might shape their future government, as it did not specify a direct end to or continuation of the imperial dynasty. The crux of that matter was the preservation of the Kokutai.

The Kokutai was the national essence of Japan. It was all aspects of Japanese polity, derived from history, tradition and customs all focused around the cult of the Emperor. The government run by politicians was secondary, at any given time the kokutai was the belief the Emperor could come in and directly rule. If you are confused, dont worry, I am too haha. Its confusing. The Meiji constitution was extremely ambiguous. It dictated a form of constitutional monarchy with the kokutai sovereign emperor and the “seitai” that being the actual government. Basically on paper the government runs things, but the feeling of the Japanese people was that the wishes of the emperor should be followed. Thus the kokutai was like an extra-judicial structure built into the constitution without real legal framework, its a nightmare I know. Let me make an example, most of you are American I imagine. Your congress and senate actually run the country, wink wink lets forget about lobbyists from raytheon. The president does not have executive powers to override any and all things, but what if all American voters simply felt he did. So the president goes above his jurisdiction, and the American people violently attack Congress and the Senate if they don’t abide by the president's wishes. That’s kind of how it works for a lack of better words. Again in the specials I will roll out soon, it will make more sense after I blabber about it in roughly 7000 words. Now, in response, Prime Minister Suzuki Kantaro expressed to the Japanese press on July 29 his belief that the Potsdam Declaration was nothing new and held no "significant value." This statement was interpreted by Truman and his administration as a rejection of the declaration. In reality, since the Yalta Conference, Japan had repeatedly approached the Soviet Union in an attempt to extend the Neutrality Pact and to enlist the Russians in negotiating peace with the Allies, offering attractive territorial concessions in return.

The Japanese, therefore, chose not to officially respond to the Potsdam Declaration as they awaited a reply from the Soviet Union. However, this response never materialized. The Soviet Union was preparing for an invasion of Manchuria, fully aware that Japan had become a weakened nation after suffering several defeats in the Pacific. In contrast, the once-inadequate Russian military had transformed into one of the strongest forces of the time. They had successfully absorbed powerful German offensives in 1941, 1942, and 1943, and rebounded with their own offensives in 1944 and 1945, ultimately crushing the military might of Nazi Germany. Motivated by Allied requests for support and the desire to solidify the Soviet Union's post-war position in the Far East, Soviet leaders began planning in March for a final campaign to reclaim Manchuria, northern Korea, southern Sakhalin, and the Kuril Islands from Japan. However, most Soviet troops were stationed more than 10,000 kilometers away in Europe. As a result, forces and equipment designated for deployment to Manchuria had to be transported along a fragile and limited-capacity network over a five-month period from April to August. Initially, they stockpiled equipment in the Far East to re-equip units already present in that region. Then, a massive regrouping of forces to the east commenced in May, with units still arriving even as the campaign opened in August. This shift, involving nearly one million men, effectively doubled the strength of Soviet forces in the Far East from forty to more than eighty divisions.

Opposing Valisevsky’s Far East Command was General Yamada Otozo’s Kwantung Army, along with its Manchukuoan and Inner Mongolian auxiliaries. Once the most prestigious and powerful unit of the Imperial Japanese Army, the Kwantung Army had significantly eroded in strength and quality over the past few years due to the diversion of its main assets to other theaters. Consequently, many experienced units were siphoned off and replaced by formations made up of draft levies, reservists, and smaller, cannibalized units. By August, the Kwantung Army consisted of General Kita Seiichi’s 1st Area Army in eastern Manchuria, which included the 3rd and 5th Armies, alongside two divisions under direct area army control. General Ushiroku Jun commanded the 3rd Area Army in central and western Manchuria, encompassing the 30th and 44th Armies, plus two divisions, three independent mixed brigades, and one independent tank brigade under his direct command. In northern Manchuria, Lieutenant-General Uemura Mikio led the 4th Army, which was composed of three divisions and four independent mixed brigades.

Additionally, the army of Manchukuo contributed eight infantry and seven cavalry divisions, along with fourteen brigades of infantry and cavalry. Mengjiang added six cavalry formations and other garrison forces from Inner Mongolia. Furthermore, Lieutenant-General Kozuki Yoshio’s 17th Area Army was stationed in central and southern Korea, totaling seven divisions and three independent mixed brigades. In northern Korea, Lieutenant-General Kushibuchi Senichi’s 34th Army consisted of two divisions and one independent mixed brigade. Recognizing that his forces lacked adequate training and equipment, Yamada’s plans called for a delay at the borders, followed by a defense consisting of successive positions culminating in a final stand at a stronghold constructed in the Tunghua area. This strategy would see roughly one-third of the Japanese forces deployed in the border region, while the remaining two-thirds would be concentrated in operational depth to create a series of defensive lines.

By July 25, Soviet force deployments to the Far East were virtually complete. The Soviets meticulously tailored all military units, from the front level down to army, corps, division, brigade, and battalion, to effectively achieve specific missions. This tailoring took into account not only the strength and dispositions of enemy forces but also the terrain where the unit would operate and the desired speed of the operation. Each unit was equipped with the necessary artillery, anti-tank, tank, air defense, and engineer support. For instance, the 1st Far Eastern Front received heavy artillery attachments to provide the firepower needed to breach heavily fortified Japanese positions. In contrast, the Transbaikal Front was given heavy vehicular and motorized rifle support, enabling it to conduct rapid, balanced combined arms operations across the broad expanses of western Manchuria and Inner Mongolia. Within each front, armies assigned to assault strong enemy fortified zones had significantly more artillery assets compared to those operating on open axes of advance. Units deployed in difficult terrain were afforded extensive engineer support to facilitate their operations. At the lowest tactical levels, specially tailored forward detachments from rifle divisions and tank and mechanized corps, alongside assault groups from rifle regiments and battalions, ensured the firepower and mobility necessary to execute high-speed operations.

However, the final decision to attack would not be made until August 7, when Vasilevsky committed the Transbaikal and 1st Far Eastern Fronts to a simultaneous assault scheduled for August 9. It is believed that the detonation of the atomic bomb the previous day prompted this hasty decision, resulting in the short two-day period between the decision and the planned attack. Vasilevsky’s strategy called for a double envelopment conducted by Soviet forces along three axes to secure Manchuria and destroy a significant portion of the Kwantung Army. The Transbaikal Front was tasked with attacking eastward into western Manchuria, while the 1st Far Eastern Front would move westward into eastern Manchuria. Both offensives were to converge in the Mukden, Changchun, Harbin, and Kirin areas of south-central Manchuria. Meanwhile, the 2nd Far Eastern Front would conduct a supporting attack into northern Manchuria, driving southward toward Harbin and Tsitsihar.

Moreover, the timing of on-order operations against southern Sakhalin and the Kuriles would depend on the progress of these main attacks. For the western pincer, Malinovsky’s plan involved the 17th and 39th Armies and the 6th Guards Tank Army, followed by the 53rd Army, launching the primary assault. Their objective was to bypass the Halung-Arshaan Fortified Region to the south and advance toward Changchun. The success of the Transbaikal Front operation hinged on speed, surprise, and the deployment of mobile forces across virtually every sector, aiming to preempt effective Japanese defenses. To achieve this swiftness and surprise, tank formations were positioned in the first echelon of units at all command levels. The operation required tank-heavy forward detachments at each command level, with the 6th Guards Tank Army designated to spearhead the front's efforts. A tank division would lead the advance of the 39th Army, supported by tank brigades assigned to the first-echelon corps and divisions. Planned rates of advance were ambitious: 23 kilometers per day for combined arms units and an impressive 70 kilometers for tank units. However, the operation involved significant risks. If Japanese units responded quickly to the Soviet attack, or if even nominal forces occupied strategic positions in the Grand Khingan mountain passes, the Soviet advance could be severely hampered. Additionally, the success of the operation relied heavily on logistical units' capability to supply these fast-moving formations deep into Manchuria. Despite these challenges, the Soviets confidently accepted the risks involved. Their mission was to crush the enemy in the border regions, cross the Grand Khingan Mountains, and occupy positions in the central Manchurian plain from Lupei to Solun by the tenth to fifteenth day of the operation.In support, the Soviet-Mongolian Cavalry-Mechanized Group was to attack across the Inner Mongolian desert and southern Grand Khingan Mountains toward Kalgan and Dolonnor. Simultaneously, the 36th Army was set to advance from Duroy and Staro-Tsurukaytuy across the Argun River to secure Hailar.

In the next phase, for the second pincer, Meretskov’s plan involved the 1st Red Banner Army, the 5th Army, and the 10th Mechanized Corps launching the main attack from the Grodekova area, located northwest of Vladivostok. Their objective was to advance toward Mutanchiang to exploit and secure the Kirin, Changchun, and Harbin regions, while coordinating with Soviet forces from the Transbaikal Front. Additionally, the 35th Army was tasked with attacking from the Lesozavodsk-Iman area, north of Lake Khanka, to capture Mishan, Linkou, and Poli. Meanwhile, the 25th Army would launch an offensive from northwest of Ussurysk to secure the Tungning, Wangching, and Yenchi areas. Once the 1st Far Eastern and Transbaikal Fronts converged in the Changchun area, they would advance together to eliminate the final Japanese resistance on the Liaotung Peninsula and secure the strategic naval base at Port Arthur. Furthermore, Purkayev’s 2nd Far Eastern Front was to advance on a broad front across the Amur and Ussuri rivers, extending from Blagoveshchensk to south of Khabarovsk. This movement aimed to exert maximum pressure on Japanese forces in northern Manchuria. The 15th Army would spearhead the main attack across the Amur River in the Leninskoye area, advancing southward into the regions around the Sungari and Ruhe rivers. In support, the 2nd Red Banner Army was designated to attack across the Amur River from the Blagoveshchensk area to Sunwu and then advance southward to Tsitsihar. The 5th Rifle Corps would also be involved, attacking from Bikin to secure Paoching and Poli. This multifront operational plan aimed for the complete destruction of Kwantung Army units in Manchuria with maximum speed, effectively cutting off Japanese troops from reinforcements coming from northern China or Korea. These relentless mobile attacks, deployed across the broadest of fronts, were designed to prevent the Japanese from reallocating forces, leading to their ultimate collapse and piecemeal defeat.

As planned, the Japanese were caught completely by surprise when they received the Soviet declaration of war just an hour before midnight on August 8. At the same time, they were facing a critical decision in response to the recent bombing of Hiroshima. After learning about the success of Colonel Tibbets’ mission, President Truman released a pre-approved statement that detailed the atomic bomb’s destructive capabilities and warned that if Japan did not accept the Potsdam Declaration, "they may expect a rain of ruin from the air, the like of which has never been seen on this earth." Although Truman had only the plutonium Fat Man device remaining for use, he had been informed that a third bomb might be ready sometime in August. Among American military leaders, including Admiral Nimitz and Generals Spaatz, LeMay, and Twining, there was a belief that this third nuclear weapon should be dropped on Tokyo if Japan did not surrender.

Conversely, some Japanese senior officials, like Admiral Toyoda, speculated that even if the Allies had used an atomic bomb, they likely would not have many more at their disposal. They argued that the Japanese people should be prepared to defend their home islands to the death if favorable terms of surrender could not be secured. However, on August 8, Prime Minister Suzuki instructed Foreign Minister Togo Shigenori, who advocated for negotiating with the United States, to inform Emperor Hirohito about the devastation caused by the atomic bomb in Hiroshima. Hirohito responded by authorizing foreign minister Togo to notify the world on August 10th that Japan would accept the allied terms of surrender with one condition “that the said declaration does not comprise any demand which prejudices the prerogatives of His Majesty as a Sovereign Ruler.”

In the meantime, to increase pressure on the Japanese, Twinning launched additional conventional B-29 raids. A total of 412 B-29s targeted the Nakajima aircraft plant in Musashino during a daylight attack on August 8. However, the United States also needed to demonstrate to the Japanese government and people that Little Boy was not just an isolated experimental device. As a result, a decision was made to drop the Fat Man plutonium bomb on either the primary target of Kokura or the secondary target of Nagasaki, with this mission scheduled for August 9. For this operation, Tibbets selected Major Charles Sweeney to pilot the B-29 named Bockscar and deliver the device. The leading B-29 would decide the ultimate target based on weather reports from two reconnaissance B-29s, followed by two additional aircraft assigned to scientific and photographic missions. To prepare for takeoff, the bomb was armed by installing three plugs. At 03:49 on August 9, Sweeney departed from Tinian, heading toward Yakushima Island to rendezvous with his escorts.

The mission began with complications that only escalated. A typhoon near Iwo Jima forced mission planners to relocate the planned rendezvous between Bockscar and her escorts to Yakushima, an island south of Kyushu. Sweeney took off at 03:49 on August 9 and headed north, but strong headwinds hindered her progress toward Yakushima. A further issue arose when a photographic specialist assigned to the support aircraft Full House was barred from flying due to forgetting his parachute. Consequently, Major Hopkins on Full House had to break radio silence to seek instructions on operating the camera. However, a more critical situation was uncovered when Commander Ashworth and his assistant discovered that an indicator was showing that Fat Man's electronic fusing circuits had closed, indicating that arming was complete. A faulty switch, with incorrectly installed wiring, posed the risk of a premature explosion. As the mission continued over Yakushima, Sweeney successfully met up with Captain Bock, piloting the scientific support B-29, but failed to rendezvous with Major Hopkins. This meant that Bockscar would only have The Great Artiste to accompany it for the final leg of its mission. According to Ashworth's log, they arrived at the rendezvous point at 09:00 and saw Bock at 09:20, while Full House waited south of the arranged position. Sweeney had initially agreed to circle Yakushima for only 15 minutes; however, he ended up waiting approximately 50 minutes for Hopkins to arrive, wasting precious fuel in the process. Due to the weather conditions, Hopkins had lost visual contact with the other B-29s and had to break radio silence again to locate Bockscar, but Sweeney did not respond. Despite reports indicating 30% cloud cover over Kokura, Sweeney chose to proceed there, believing the haze over the city would clear. Bockscar arrived at the initial start point for the bomb run over Kokura at 10:44, but unfortunately, heavy cloud cover had settled over the city, preventing a successful bomb delivery. After three unsuccessful bomb runs, which consumed an additional 45 minutes of fuel, a flight engineer discovered that a fuel pump had malfunctioned, trapping 600 gallons of fuel in the auxiliary bomb bay fuel tanks.

Despite fuel concerns, Sweeney chose to proceed with the mission, heading south and then east toward Nagasaki, which he reached at 11:50. Unfortunately, the weather there was as poor as it had been at Kokura, prompting Sweeney to make the controversial decision to drop Fat Man using radar guidance. Due to the fuel shortage, he only conducted a single bomb run. Just before initiating the radar approach, a hole in the clouds opened, revealing the aim point: the Mitsubishi Steel and Arms Works located on the Urakami River. Fat Man was dropped at 11:58 and detonated approximately 1,650 feet above the target after a 50-second descent. Initial reports indicated that the explosion occurred about 500 yards north of the Mitsubishi plant and roughly 0.8 miles south of another Mitsubishi facility. While Fat Man had a more powerful detonation, the damage and casualties were not as extensive as those caused by the lower-yield Little Boy. The topography of Nagasaki, surrounded by hills, confined the explosion to the bowl-shaped center of the city, in stark contrast to Hiroshima’s relatively flat landscape. Of the 7,500 Japanese employees at the Mitsubishi plant, 6,200 were killed, with an additional 17,000 to 22,000 employees at other war plants and factories also perishing. Unlike Hiroshima, where the military death toll was high, only about 150 Japanese soldiers were killed instantly, alongside at least 8 prisoners of war. Overall, it is estimated that around 45,000 civilians lost their lives due to the explosion, with between 50,000 and 60,000 sustaining injuries. The radius of total destruction extended about one mile, with fires spreading across the northern portion of the city to two miles south of the impact point. Thankfully, no firestorm developed as it had in Hiroshima.

Bomb damage to physical structures in Nagasaki was erratic. Some areas, such as the Nagasaki Arsenal and the Mitsubishi plant, experienced significant destruction, while nearby locations appeared almost untouched. Despite this, Sweeney's mission resulted in an estimated 68.3% loss of pre-existing industrial production, excluding the harbor facilities, without disrupting the critical north-south National Railway track. While Fat Man's debut was historic, its destructive capability was comparable to other B-29 incendiary night raids. After circling Fat Man's expanding mushroom cloud, Sweeney headed toward Okinawa at 12:05, with only 300 gallons of fuel remaining. Fortunately, Bockscar's crew managed to return to Yontan Field with just seven gallons of fuel left, successfully making their way back to Tinian later that same day.

Simultaneously, Vasilevsky's Far East Command began its offensive just ten minutes after midnight on August 9. Reconnaissance units, forward detachments, and advanced guard units of the Transbaikal Front crossed the border into Inner Mongolia and Manchuria. Initially, attacking units faced resistance primarily in the 36th Army zone, where their attack routes passed through fortified Japanese border installations. However, most assault units advanced with little opposition. By 04:30, main force units had begun to follow closely behind the assault troops. Colonel-General Issa Pliyev's Soviet-Mongolian Cavalry-Mechanized Group advanced in two march columns, 200 kilometers apart. By nightfall, they had penetrated 55 miles into the arid expanses of Inner Mongolia, moving southward toward Dolonnor and Kalgan while sweeping aside small detachments of Inner Mongolian cavalry. Meanwhile, Lieutenant-General Aleksei Danilov's 17th Army entered Inner Mongolia virtually unopposed in two columns, advancing approximately 70 kilometers by nightfall.

To the left, Colonel-General Andrey Kravchenko’s 6th Guards Tank Army led the main attack into Inner Mongolia in two columns, encountering limited opposition and rapidly advancing about 150 kilometers until reaching the foothills of the Grand Khingan Mountains, west and north of Khorokhon Pass, by nightfall. Simultaneously, Colonel-General Ivan Lyudnikov’s 39th Army advanced along two divergent axes. The 5th Guards and 113th Rifle Corps gained 60 kilometers as they bypassed the Halung-Arshaan and Wuchakou Fortified Regions to the south. Meanwhile, the 94th Rifle Corps struck northeast towards the rear of the Hailar Fortified Region, swiftly overcoming light resistance. The 124th Rifle Division was also deployed between both axes to probe toward the Halung-Arshaan Fortified Region. Lieutenant-General Alexander Luchinsky’s 36th Army advanced on two fronts, with the 2nd and 86th Rifle Corps successfully crossing the rain-swollen Argun River between Staro-Tsurukhaytuy and Duroy and securing key bridges north of Hailar. Additionally, an operational group of two rifle divisions attacked across the border, establishing a foothold in the small fortified post at Manchouli. During the night, Luchinsky sent the 205th Tank Brigade to assault Hailar from the northeast, while the 152nd Rifle Regiment maneuvered to attack from the southeast. This offensive succeeded only in capturing the railroad station in the northern part of Hailar, as the southern and eastern sections of the city fell the following day. However, the 80th Independent Mixed Brigade continued to delay the Soviet advance, while the 119th Division moved eastward to fortify positions in the Grand Khingan Mountains, stretching from Yakoshih to Pokotu. Despite these setbacks, the 36th Army had advanced 60 kilometers into Manchuria and had partially secured Hailar.

Meanwhile, to the east, drenched by inundating thunderstorms, the 1st Far Eastern Front advanced under the worst weather conditions during the dark of night. This totally surprised the Japanese defenders and led to the rapid reduction of many unsuspecting border posts. Colonel-General Nikolay Krylov’s 5th Army spearheaded the main attack, with the 17th, 65th, and 72nd Rifle Corps quickly breaking through the Volynsk center of resistance. They achieved a penetration of 16 to 22 kilometers toward Laotsaiying and Machiacho. Meanwhile, the 105th Fortified Region and assault engineer units attacked the Suifenho center of resistance, successfully seizing critical railroad tunnels on the main rail line into Manchuria. In support, Colonel-General Afanasy Beloborodov’s 1st Red Banner Army to the north launched an assault with the 26th and 59th Rifle Corps over a 16-kilometer sector through heavily wooded, wet terrain. As they advanced, they constructed roads through the forest. By nightfall, forward divisional elements had advanced five to six kilometers deep into Manchuria, crossing the Shitouho River and half of the forested region. At the same time, the 6th Field Fortified Region and the 112th Fortified Region stormed several Japanese border positions and slowly advanced north towards Mishan. This assault supported Lieutenant-General Nikanor Zakhvatayev’s 35th Army, which deployed the 66th and 363rd Rifle Divisions to cross the Sungacha River and attack towards Mishan. The 264th Rifle Division and the 109th Fortified Region assaulted across the Ussuri River against Hutou. After securing a crossing over the Sungacha, the 66th Division penetrated deep into the swamps, managing to advance 12 kilometers into Tachiao. Meanwhile, the 363rd Division successfully broke through an enemy strongpoint at Maly Huankang, ultimately reaching the southwest edge of Tachiao. In turn, the 264th Division crossed the Ussuri River and outflanked Hutou to the south, capturing the railroad depot and cutting the highway to Hulin.

Lastly, Colonel-General Ivan Chistyakov’s 25th Army launched an attack along two principal axes. The 39th Rifle Corps and the 259th Tank Brigade targeted Tungning, while border guard units, along with the 108th and 113th Fortified Regions, crossed the Hunchun and Tumen rivers to engage Japanese defenses in Korea and at Hunchun. Shielded by rain, the Russians swiftly captured or subdued the Japanese forward defenses along the front. By nightfall, the 39th Rifle Corps had advanced ten to twelve kilometers into the Japanese rear along the Pad Sennaya River. Lead elements, reinforced by the 72nd Tank Brigade, began their assault on the town of Tungning and the vital railroad line to Tumen. To the north, the 2nd Far Eastern Front deployed its forces across three separate sectors. Lieutenant-General Stepan Mamonov’s 15th Army was tasked with the main attack across the Amur River in the center of the front sector. Lieutenant-General Makar Teryokhin’s 2nd Red Banner Army was assigned to conduct a supporting attack against the Aihun and Sunwu Fortified Regions, while Major-General Ivan Pashkov’s 5th Rifle Corps aimed to seize the fortified region at Jaoho. Supported by the Amur Naval Flotilla, reconnaissance and advanced detachments of the 15th Army launched assaults without artillery preparation and rapidly secured major islands in the Amur River. Mamonov’s rifle divisions then sent reconnaissance units across to the south bank of the river, which was likewise secured against light opposition. Throughout the remainder of the day, reconnaissance units and advanced battalions of the 15th Army consolidated their positions on the islands and the south bank, while main forces concentrated on conducting a challenging river crossing, hampered by heavy rains, high water, and mud.

At the same time, assault units and reconnaissance detachments of the 5th Rifle Corps crossed the Ussuri River, successfully securing a beachhead north of Jaoho while the remainder of the corps was transported across the river. From August 9 to 11, the forces of the 2nd Red Banner Army limited their activities to reconnaissance, focusing on seizing islands in the Amur River and harassing Japanese installations. This operation occurred at a critical moment for the Japanese, who were still reeling from the impacts of two atomic bombings. The Soviet Union had successfully initiated its invasion of Manchuria, setting the stage for a campaign that, although brief, was just beginning.

I would like to take this time to remind you all that this podcast is only made possible through the efforts of Kings and Generals over at Youtube. Please go subscribe to Kings and Generals over at Youtube and to continue helping us produce this content please check out www.patreon.com/kingsandgenerals. If you are still hungry after that, give my personal channel a look over at The Pacific War Channel at Youtube, it would mean a lot to me.

Two atomic bombs have been dropped and the Soviet Union has invaded Manchuria. For months the Japanese had been working tirelessly to obtain better peace terms through the Soviets, hoping above all else to preserve the Kokutai. It was all for nothing. The Americans offered terms, leaving the Kokutai ambiguous. What would Japan, or better said, the Emperor do?

- 194 - Pacific War Podcast - The Atomic Bombing of Nagasaki - August 5 - 12, 1945

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