Last time we spoke about the first battle of Changsha. Japanese forces under General Okamura Yasuji, including the 6th, 13th, and 33rd Divisions, launched a multi-pronged offensive, crossing the Xin Qiang River and capturing Yingtian amid brutal fighting. Chinese defenses, commanded by Xue Yue in the Ninth War Zone, employed gradual resistance strategies, with units like the 195th Division under Qin Yizhi holding key positions such as Bijia Mountain and Fulinpu, inflicting heavy losses. Battalion Commander Luo Wenlang recaptured Dongtang in a midnight assault, grieving his fallen brother amid Mid-Autumn moonlight. Chiang Kai-shek, from Chongqing, oversaw operations while hosting a festive banquet, buoyed by international support like U.S. loans. By October, Japanese advances stalled; Okamura ordered a retreat on October 2, exposed by a downed plane yielding critical documents. Chinese forces pursued, reclaiming lines by October 8, annihilating over half the invaders per Chiang's commendation.

 

#198 The Battle of South Guangxi

Welcome to the Fall and Rise of China Podcast, 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 the history of Asia? Kings and Generals have an assortment of episodes on history of asia 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 where I cover the history of China and Japan from the 19th century until the end of the Pacific War.

In January 1939, the Japanese General Headquarters, responding to naval needs, ordered the 21st Corps to seize Hainan Island. The goal was to establish a base for air operations against southwestern China and to enforce blockade measures. Supported by the Japanese Navy, the Corps deployed the Taiwan Brigade, which landed at Haikou on February 10. After initial defeats, Chinese peace preservation units withdrew to the island's interior and conducted harassment operations. Japanese troops soon occupied northern counties including Qiongshan, Wenchang, Ding'an, Qionghai, and Chengmai, followed by the port of Yulin, which positioned them for southward advances toward Guangxi.

 

This invasion was part of a broader strategy to disrupt Chinese supply lines and secure a foothold in southern China. Although Chinese resistance on Hainan ultimately failed to repel the invaders, it highlighted the resilience that would define regional fighting.

 

After the costly Battle of Wuhan, the Sino-Japanese War reached a stalemate in central China, despite ongoing large-scale conflicts and Japanese strategic bombings that caused heavy casualties without breaking the deadlock. Politically, Japan's alignment with the Axis powers and the start of World War II in Western Europe led European nations to bolster ties with China. With major coastal ports under Japanese control, the Nationalist government's main overseas supply route became the Haiphong-Kunming railway in French Indochina, which transported four times more war materials in 1938 than in 1937, including heavy equipment purchased abroad.

 

The Hainan occupation negatively impacted Japan's war efforts, though diplomatic pressure on Britain and France proved ineffective. Meanwhile, the Imperial Japanese Navy proposed a southward advance: invading from Nanning to Longzhou County in Guangxi by sea to establish an airfield for strategic bombing. An April 15, 1939, Navy Department assessment deemed large-scale inland army operations challenging, recommending instead that the army and navy collaborate to occupy Shantou—the largest trading port on the South China coast—before pushing into Guangxi to seize Nanning and sever China's vital Indochina supply line.

 

In June, the Japanese General Staff's "Military Geography" emphasized that occupying Nanning would provide convenient transportation in all directions, reaching Guangdong, Hunan, Guizhou, and Yunnan. The Nanning-Lang Son road had become a major artery for Chiang Kai-shek's regime to connect with the southwest. To cut it off directly, Nanning must be captured first. Once occupied, heavy troops near Tokyo Bay would not be needed to achieve the operation's purpose. This idea gained considerable support both politically and tactically. The Army's northward policy had been defeated by the Soviet Union in the Battle of Khalkhin Gol in September 1939. Major General Tominaga Kyoji, the newly appointed head of the First Department of the General Staff, sought to avoid further embarrassments. Supporting the proposal involved transferring the 5th Division of the Kwantung Army, originally intended for Khalkhin Gol, to the south. This prevented front-line units from misjudging higher-ups' positions and allowed implementation without affecting existing troops.

 

In September, the European war broke out. The Japanese General Headquarters ordered the 21st Army to capture the vicinity of Nanning, cut off the international passage between Guangxi and Vietnam, and obtain a base for air operations in southwest China. Japan aimed to completely sever China's most important supply route. According to Japanese intelligence, the French Indochina line accounted for 85% of China's foreign aid in late 1939, with 12,500 tons transported in September alone.

 

On September 1, 1939, Germany attacked Poland; on September 3, Britain and France declared war on Germany, igniting World War II. Japan, eager to resolve the China issue and free up troops to seize Western colonies in Asia and the Pacific, stated through Prime Minister Nobuyuki Abe on September 4: "At the outbreak of the European war, the Empire will not intervene and has decided to focus on resolving the China Incident." In Nanjing, the China Expeditionary Army Headquarters was established, with General Nishio Hisazo as Commander-in-Chief and Lieutenant General Itagaki Seishiro as Chief of Staff, overseeing the North China Area Army, the 11th Army, the 13th Army, and the 21st Army.

 

On September 23, the Japanese General Headquarters issued an order to prepare for a swift response to the China Incident. On October 16, "Continental Order No. 375" directed the Commander-in-Chief of the China Expeditionary Army to swiftly cut off enemy supply routes from Nanning to Longzhou with a portion of the navy. Also on October 16, "Continental Order No. 582," a central Army-Navy agreement, aimed to cut off enemy routes along the Nanning-Longzhou line and strengthen naval air operations against the Yunnan-Vietnam Railway and the Burma Road. The operation was scheduled for mid-November. On October 19, Nishio Juzo issued orders for the Guangxi operation, involving the 5th Division, Taiwan Mixed Brigade, supporting units, the 5th Fleet (renamed the 2nd Expeditionary Fleet in mid-November), and the 3rd Combined Naval Air Group. Total strength: about 30,000 men, over 70 warships, 2 aircraft carriers, and about 100 aircraft. Tominaga Kyoji announced: "This is the last battle of the China Incident."

 

Politically, the Guangxi Army was a key pillar of the National Government after retreating to Sichuan. Attacking Guangxi could impact the Guangxi clique's stance on continuing the war. Cutting off the Nanning-Longzhou line would affect Vietnam-China transportation security and allow actions against French Indochina amid Europe's distractions. With tactical and political alignment, the plan was approved.

 

In September 1939, the Chinese repelled the Japanese attack on Changsha. In October, the National Government held the Second Nanyue Military Conference in Hengshan, summarizing the First Changsha Campaign and deciding on a new offensive. On October 29, Chiang Kai-shek announced: "Our future strategic application and the mentality of officers and soldiers must be completely transformed. We must start to turn defense into offense, turn stillness into movement, and actively take offensive measures." On November 5, after the meeting, intelligence indicated Japan's intention to invade the south. U.S. and British agencies reported the Japanese fleet gathering in Tokyo Bay, signaling an imminent operation against Nanning. Chiang flew from Hengshan to Guilin to arrange defenses.

 

At this time, coastal defense was guarded by the 16th Army Group under Xia Wei (transferred, with Cai Tingkai taking over), a Guangxi clique force comprising the 46th and 31st Armies. Bai Chongxi, director of the Guilin Headquarters, was in Chongqing for the Sixth Plenary Session of the Fifth National Congress of the Kuomintang, while Chief of Staff Lin Wei was in Rong County mourning Xia Wei's mother. The headquarters was essentially deserted. Zhang Fakui, commander of the Fourth War Zone, and Chief of Staff Wu Shiyuan were in Shaoguan, Guangdong. The three-tiered command structure—headquarters, war zone, army group—was practically non-existent.

 

The Chinese forces north of the pass were commanded by Bai Chongxi's Guilin Headquarters, with Lin Wei as Chief of Staff; they included the Fourth War Zone under Zhang Fakui and the 16th Army Group under Xia Wei. They commanded: the 31st Army (Commander Wei Yunsong; 131st Division under He Weizhen; 135th Division under Su Zuxin; 188th Division under Wei Zhen); the 46th Army (Commander He Xuan; 170th Division under Li Xingshu; 175th Division under Feng Huang; New 19th Division under Huang Gu); and a portion of the 200th Division of the 5th Army (Commander Dai Anlan). Together with the 1st-4th Independent Infantry Regiments of the Guangxi Training Corps, total strength was approximately 60,000 men.

 

After the Japanese landing, Bai Chongxi was stationed in Qianjiang, while the 16th Army Group headquarters in Xiawei was at Heishiyan near Binyang.

 

In early November 1939, the Japanese 5th Fleet and the aircraft carrier Kaga escorted the 5th Division and the Taiwan Brigade to concentrate in Haikou. Japanese aircraft bombed important cities in Guangxi. At that time, the Chinese army defended the coast from Nanning to Qinzhou Bay and Fangcheng with part of the 16th Army Group of the Fourth War Zone. The 46th Army was responsible for the coastline of Fangcheng, Qinxian, Hepu, and Liankou, and the 31st Army for key points along the Xijiang River.

 

On November 9, Japanese troops assembled at Sanya Bay on Hainan Island. Lieutenant General Ando Rikichi, commander of the 21st Army, personally commanded from Sanya. On the 13th, the fleet set sail. On the 14th, vanguard ships feinted at Beihai with over ten ships. A battalion of the 175th Division retaliated and was ordered to destroy Beihai, but Commander Chao Wei of the 524th Regiment believed no landing was intended, avoiding complete destruction. That night, Japanese ships turned toward Qinzhou.

 

To safeguard the international communications link between Guangxi and Indochina, the Chinese Generalissimo's Headquarters in Guilin assigned defensive missions. The 46th Corps of the 16th Army Group was tasked with defending the coastline from Fangcheng to Qinzhou, Hepu, and Lianjiang. The 31st Corps was responsible for key positions along the Xi River. Defensive positions were prepared in advance, and communications infrastructure was sabotaged to facilitate gradual resistance, aiming to attrition Japanese forces before a decisive engagement along the Yong River.

 

On November 15, under air and naval fire support, the Japanese 5th Division and Taiwan Brigade executed a forced landing on the west coast of Qinzhou Bay. Following intense resistance, the Chinese New 19th Division withdrew to Pancheng and Shangsi. After capturing Qinzhou, the Japanese 5th Division advanced north along the Yong-Qin Highway, while the Taiwan Brigade moved along Xiaodong–Baiji–Bujin Road. On November 17, the Japanese army captured Qinzhou and Fangcheng. The 5th Division immediately split into three routes along the Yongqin Highway, while the Taiwan Brigade advanced north along Xiaodong-Baekje-Pujin. On the 18th, they attacked Xiaodong, the headquarters of the New 19th Division. Division Commander Huang Gu fled alone in the face of battle. His troops were routed, and the Japanese continued northward. Meanwhile, bandits from the Shiwan Mountains formed numerous plainclothes teams to lead the Japanese advance, accelerating their northward movement. By November 21, they approached the south bank of the Yu River. On December 1, they occupied Gaofeng Pass. On December 4, they occupied Kunlun Pass and then adopted a defensive posture.

 

On November 16, Chiang Kai-shek summoned Bai Chongxi in Chongqing, ordering him to return to Guilin immediately to command the battle, without attending the plenary session. Bai requested full command without intervention from Zhang Fakui, and that all armies obey the Headquarters directly. Chiang approved and transferred his elite Fifth Army and other units to Bai's command. Bai telegraphed Du Yuming to lead troops by train from Hengyang to southern Guilin and reinstated Xia Wei as commander of the 16th Army Group, with Cai Tingkai awaiting orders. The 16th Army Group assembled, and Deputy Commander-in-Chief Wei Yunsong arrived in Nanning on the 19th. Units rushed to block Japanese advances. Bai flew to Guilin on the 19th and Qianjiang on the 21st, establishing the command post. Thus, as Japanese arrived in Nanning, Chinese reinforcements like the 170th Division reached Yongning on the 22nd, two regiments of the 135th Division entered Nanning on the 23rd, and the 600th Regiment of the 200th Division arrived at Ertang on the afternoon of the 24th. Other armies assembled in Liuzhou and Binyang.

 

On November 21, Japanese troops approached the south bank of the Yu River. Wu Zongjun, commander of the 405th Regiment of the 135th Division, arbitrarily ordered his regiments to abandon positions and retreat. Wei Yunsong ordered Su Zuxin to intercept, but Wu disobeyed. No troops defended Nanning's front lines. At dawn on the 24th, the 170th Division fought fiercely in Yongning. In the morning, the Japanese 21st Regiment crossed the river. By afternoon, Nanning had fallen. Over the next two days, they swept surrounding positions. On the morning of the 25th, the 600th Regiment of the 200th Division fought alone against Japanese regiments at Ertang. Under air cover, Japanese attacked, but Chinese resisted stubbornly. Regiment Commander Shao Yizhi and Adjutant Wu Qisheng were killed. Given the situation, Division Commanders Li Xingshu and Dai Anlan retreated to Gaofeng Pass after dusk. Though they failed to stop the advance, this was the fiercest resistance since the landing, lasting two days and nights. On November 25, Japanese attacked the 175th Division near Luwu from Xiaodong and the highway. The division moved to Nalong, assembling in villages there. The 175th attacked key points along the Yongqin Highway, including Datang, Naxiao, Dongya, Nabian, Xincheng, Xiaodong, Dadong, and Bancheng.

 

On November 20, the 21st Army opened its headquarters in Qinzhou. On November 26, Ando Rikichi announced the formation of the Yongqin Corps under Imamura Hitoshi. Ando left for Guangzhou on the 27th. Starting on the 26th, Japanese attacked Gaofeng Pass with aircraft cover. Despite fierce resistance, Chinese lost Gaofeng Pass on December 1. On the 4th, Japanese occupied Kunlun Pass, then adjusted deployment. The two sides confronted each other along the Kunlun Pass mountainous boundary. According to statistics up to December 1, Japanese suffered 145 dead and 315 wounded; Chinese had 6,125 dead bodies and 664 prisoners (but Japanese casualties were underreported; the 41st Infantry Regiment received 727 replacements on January 19, likely matching killed and wounded sent back). Seized in Nanning: 300 tons lead, 200 tons coal, 500 bundles cotton, 321 tons cotton thread, 30 tons iron, 60 tons tin. On December 2, the Japanese 5th Cavalry Regiment and Morimoto Battalion were attacked by about 1,500 Chinese with four tanks at Batang. Japanese dispatched the 21st Brigade (Nakamura Detachment), repelling a mixed force of the 200th and 188th Divisions. Japanese occupied Kunlun Pass but left only a battalion to defend it, withdrawing the rest to Nanning.

 

Bai Chongxi, director of the Guilin Headquarters and deputy chief of staff, proposed a counter-offensive plan, which was approved by Chiang Kai-shek.

 

On November 24, when Japanese had just occupied Nanning, Bai Chongxi demanded an immediate counterattack while Japanese were unstable and weak. After failing to gain approval, Bai asked Du Yuming to submit a request. Du sent a telegram on December 1: "The enemy occupying Nanning is less than two divisions. They succeeded by exploiting our dispersed forces, but lack heavy weapons and supplies. Our army should gather superior forces and launch a counter-offensive quickly (before December 10) to defeat them and restore international transportation." Chiang decided on a counter-offensive on December 7. On the 8th, Bai conveyed the objective: "capturing Kunlun Pass and then recovering Nanning." By mid-December, assembly was complete. Chiang dispatched Chen Cheng and Li Jishen to supervise, and Zhang Fakui arrived in Qianjiang.

 

In the early stages, Guangxi lacked heavy armored forces for counterattacking beyond Guangxi clique troops. The fall of Kunlun Pass prompted Chongqing to deploy the reorganized Fifth Army and its armored corps for a strong attack. The Fifth Army was the main force at Kunlun Pass, with the National Revolutionary Army providing cover while launching a full-scale counterattack in Nanning.

 

To recapture Kunlun Pass and Nanning, Bai Chongxi dispatched approximately nine armies and twenty-seven divisions, totaling 300,000 troops: Xia Wei of the 16th Army Group, Ye Zhao of the 37th Army Group, Deng Longguang of the 35th Army Group, and Cai Tingkai of the 26th Army Group (31st, 5th, 64th, 46th, and 43rd Armies, etc.) to attack Kunlun Pass. The Japanese, with the Nakamura Brigade as main force and special forces, had strong fortifications. Xu Tingyao of the 38th Army Group, with Li Yannian of the 2nd Army, Gan Lichu of the 6th Army, Yao Chun of the 36th Army, and Fu Zhongfang of the 99th Army. The 5th Army, plus the 1st Honorary Division (Zheng Dongguo), New 22nd Division (Qiu Qingquan), and all armored, cavalry, artillery, and engineer regiments, arrived.

 

The Japanese forces consisted of the 5th Division (Lieutenant General Hitoshi Imamura; 9th Brigade under Major General Genichiro Ogawa; 21st Brigade under Major General Masao Nakamura; Taiwan Mixed Brigade under Major General Sadashiro Shiota), Marine Corps (over 70 warships), and Air Force (100 aircraft), totaling about 30,000. Later reinforcements: Imperial Guard Division and a brigade from the 18th Division. Total about 100,000, but only 45,000 fought. After a traitor reported over 100,000 Nationalist troops north of Kunlun Pass, Imamura dismissed it as "impossible." Higher Japanese ranks hoped to instigate rebellion by the Guangxi clique. On December 10, Imamura issued a telegram "Letter to Generals Li and Bai," expressing respect and stating the attack on Nanning was to cut off Chiang's lines, hoping for Japan-China cooperation. If insisted, the Japanese garrison would win. Finally: "The more than 4,200 brave soldiers who died in Nanning have been buried in Zhongshan Park and solemnly offered sacrifices. Please rest assured."

 

On December 15, Bai Chongxi took a decisive step in the escalating conflict by issuing the first counter-offensive order, setting the stage for a coordinated push against enemy positions. He organized the forces into three main route armies, with additional reserves held back for support.

 

The Northern Route Army, under Xu Tingyao's command, focused its efforts on Kunlun Pass. The 5th Army led the direct assault there, while the 92nd Division from the 99th Army skirted around Lingliwei to strike at Qitang, effectively flanking the pass and adding pressure from the side.

 

Meanwhile, the Western Route Army, led by Xia Wei, split into two columns to cover multiple fronts. The First Column, commanded by Zhou Zuhuang, targeted Gaofeng Pass in a bold advance. The Second Column, under Wei Yunsong, positioned itself at Suwei to block any reinforcements heading toward Nanning, cutting off potential enemy supply lines.

 

On the eastern flank, Cai Tingkai's Eastern Route Army aimed to disrupt key logistics. The 46th Army moved against Luwu and Lingshan, intent on severing the vital Yongqin Highway. At the same time, the 66th Army joined the assault on Kunlun Pass before pushing onward to Gula and Gantang. To bolster these efforts, the remaining two divisions of the 99th Army were kept in reserve, ready to reinforce wherever needed.

 

The very next day, on December 16, Du Yuming—now serving as army commander—gathered his officers for a critical conference within the 5th Army. There, they crafted a clever encirclement strategy dubbed "close the gate and fight the tiger," designed to trap and overwhelm the opposition. The plan's core involved the 200th Division, led by Dai Anlan, and the 1st Honorary Division under Zheng Dongguo launching the primary attack on Kunlun Pass. Flanking from the right, Qiu Qingquan's New 22nd Division would seize Wutang and Liutang, then turn to intercept any incoming reinforcements. On the left wing, Peng Bisheng commanded two regiments in a daring bypass of Gantang and Chang'an, aiming to strike at Qitang and Batang and seal off the enemy's retreat routes.

 

The enemy at Kunlun Pass was the Matsumoto Sozaburo Battalion of the 21st Brigade. Its 42nd and 21st Regiments were along Jiutang-Nanning. On December 16, Imamura ordered Major General Kawai Genshichi of the 9th Brigade to lead thousands in a surprise attack on Longzhou and Zhennan Pass, departing on the 17th.

 

At 8 p.m. on December 17, the Battle of Kunlun Pass began.

 

On December 18, Chinese forces began their attack and captured Kunlun Pass and Jiutang on the same day. On December 19, it captured Gaofeng Pass. On December 20, Gaofeng Pass, Jiutang, and Kunlun Pass fell into the hands of the Japanese army again. At dawn on December 18, the artillery of the 5th Army opened fire. After extension, the 200th and 1st Honorary Divisions attacked. Hundreds of Japanese planes bombed. By night, the 1st Honorary captured Fairy Mountain, Laomaoling, Wanfu Village, Luotang, and Hill 411; 200th captured Hills 653 and 600, taking Kunlun Pass. At noon on the 19th, massive Japanese air raid. Imamura dispatched the 21st Regiment under Colonel Miki Yoshinosuke, recapturing it. Positions were contested repeatedly. The New 22nd occupied Wutang and Liutang; Wutang recaptured by Japanese, but Liutang held, blocking reinforcements. When Imamura ordered Taiwan Mixed Brigade reinforcement, they were blocked at Liutang by Qiu Qingquan. Du Yuming ordered Zheng Dongguo to send Zheng Tingji's 3rd Regiment to encircle Jiutang from the right. They captured high ground west of Jiutang at night. On December 20, enemy at Kunlun Pass weakened, sending urgent reports. Imamura ordered Nakamura Masao with 42nd Regiment to reinforce, but blocked at Wutang for two days, reaching Qitang on the 22nd, blocked again. Nakamura was wounded on the 23rd morning. At 1:30 pm, Miki reported: "If the brigade cannot arrive before dusk, the front line will be difficult to secure."

 

Imamura ordered Colonel Lin Yixiong's 1st Regiment and Colonel Watanabe Nobuyoshi's 2nd Regiment of the Taiwan Mixed Brigade to reinforce, but blocked by 175th Division on Yongqin Road. Watanabe's regiment blocked at Luwu by 524th Regiment (Chao Wei), and after three days, couldn't pass. Watanabe was killed, remnants fled to Qin County. On the 20th, Imamura ordered the 9th Brigade's 3rd Battalion of Ito's unit back in 105 vehicles to reinforce.

 

The Japanese confirmed the attack and Imamura ordered Nakamura Detachment rescue. Over two weeks, encirclement and breakout battles occurred on the Nanning-Kunlun Pass highway.

 

On the 18th, the 170th Division launched the Battle of Gaofeng Pass, capturing a hill on the 19th but ambushed that night. On the 20th, the pass fell, retreating to Gewei. Bai inspected but no improvement; failed to capture Gaofeng Pass or block reinforcements. Ito's unit on Yonglong Road intercepted by 131st at Xichangwei. On the 22nd, Imamura sent two companies from Nanning, intercepted by 188th near Suwei. Ito's battalion besieged in Xichangwei for three days, spared because 131st avoided close combat. Under air cover, both broke through to Nanning on the 26th.

 

On November 21, Chiang was dissatisfied with Kunlun Pass progress, ordering: "If front-line troops and artillery fail to attack or complete tasks, they shall be punished for cowardice."

 

By the 23rd, two divisions of 5th Army had over 2,000 casualties; Japanese over 1,000. Six days yielded no results, with reinforcements arriving. Du changed tactics to concentrate forces, tightening encirclement.

 

On the 24th, Oikawa Detachment ordered back to Nanning, destroying captured materials and withdrawing from Longzhou and Zhennanguan. Bai learned some escaped, telegraphing Wei Yunsong: "If the second batch escapes, it affects the main force. The deputy commander-in-chief should be punished." Main force still escaped; local troops preserved strength, benefiting Japanese.

 

On the main position, Zheng Tingji spotted Japanese officers meeting and ordered fire, inflicting heavy casualties, requiring airdropped officers.

 

On the 25th, Second Regiment of First Division captured Luotang South Heights, annihilating over 200. From December 25, Fifth Army and 159th and 92nd Divisions occupied key high grounds. Fierce battle until December 31, capturing Kunlun Pass and Tianyin, killing Nakamura Masao, annihilating over 5,000.

 

Following the intense clashes at Kunlun Pass, the battle's toll on the Japanese forces became starkly evident in the weeks that followed. On January 19, just a month after the fighting peaked, the Japanese rushed in 3,389 fresh replacements to replenish their battered 5th Division. This influx was distributed unevenly: 1,848 went to the 21st Infantry Regiment and 814 to the 42nd, figures that likely corresponded directly to the number of dead and seriously wounded who had been evacuated back home—though those with minor injuries weren't factored into these counts. The ferocity of the engagement was further underscored by the capture of numerous Japanese strongholds, where Chinese forces found that every defender had been killed, leaving no survivors behind.

 

In many ways, this outcome represented a stunning annihilation for the Japanese, particularly the 21st Brigade, which was effectively wiped out. Key figures fell in the fray, including Brigade Commander Masao Nakamura, Acting Commander Sakata Genichi, Miki Yoshinosuke, along with various deputies and battalion commanders. The leadership losses were catastrophic: over 85% of officers above the squad leader level were killed. Japanese records themselves acknowledged more than 4,000 soldiers dead, painting a grim picture that their own war histories later described as "the darkest era for the army." On the Chinese side, the victory came at a heavy price, with over 10,000 casualties suffered, yet remarkably, the core officer corps remained largely intact, preserving command structure for future operations.

 

Zooming out to the broader theater in December 1939, the Japanese 5th Division and the Taiwan Mixed Brigade found themselves holding the line against an overwhelming force of more than 150,000 Nationalist troops. At the same time, the Japanese 21st Army was shifting its focus to Guangdong Province in preparation for Operation Weng Ying, while the Oikawa Detachment—primarily composed of the 11th Infantry Regiment—pushed forward to Longzhou. They captured Zhennanguan on November 21, securing valuable stocks of fuel and arms in the process. However, these stretched deployments and insufficient troop numbers left the Japanese without adequate reserves when encirclement loomed at Kunlun Pass. Ultimately, they were forced to abandon their offensive plans in Guangdong, pulling back to consolidate defenses around Nanning. Meanwhile, from their base in Chongqing, Chinese commanders had meticulously planned the recapture, turning the tide through careful strategy and sheer determination. Shocked, Japanese dispatched Vice Chief of Staff Sawada Shigeru to Guangzhou. On December 29, 21st Army sent staff to Nanning. Failed to change 21st Brigade's defeat. Imamura planned personal charge for revenge on January 1, but Ando ordered holding Nanning for reinforcements: "The 21st Army is transferring powerful force to annihilate enemy. 5th Division secure Nanning and key locations."

 

After capturing Kunlun Pass and annihilating two regiments of 21st Brigade, 5th Army thought to recapture Nanning. Remaining 21st Brigade and Taiwan regiments between Jiutang and Batang. At noon January 1, 1940, Oikawa's thousands arrived at Batang; Imamura ordered Oikawa replace killed Sakata. First battle on Hill 441. 1st Division held north side; Japanese south. On January 1, Japanese bombed and attacked; 1st Division reduced to hundred but held. At dawn 2nd, counterattack all day, no progress. On 3rd, Du mobilized 200th and part New 22nd; brutal fighting, heavy casualties. At nightfall, Japanese retreated to Jiutang. On 4th, Japanese abandoned Jiutang to Batang. New 22nd moved into Jiutang. 5th Army attacked Batang; by 12th, no progress. Exhausted with heavy casualties, 5th Army ordered to Silong for rest. Mission transferred to 36th Army. 5th Army withdrew.

 

On January 7, Chiang flew to Guilin, visiting Qianjiang on 10th to discuss plans with Bai, Chen, Zhang, Xu, Lin. Bai proposed offensive with new armies to recapture Nanning. Chiang approved. On 11th, as Bai issued orders, Chiang overturned, changing to defensive. Japanese gained time for counter-offensive.

 

To salvage defeat, Japanese transferred 18th Division and Konoye Brigade from Guangdong. Combined with existing, formed 22nd Corps under Seiichi Kuno, under South China Front Army commanded by Reikichi Ando, preparing counteroffensive.

 

On January 25, a brigade from the Japanese 18th Division and elements of the 15th Division attacked frontally along Yongbin Road, while Konoye Brigade flanked toward Guizhou via Yongyong Road, in Binyang Campaign. Konoye crossed at Tingziwei, then Yongchun County, via Gantang, Luwei, Gula, Wuling to Binyang, cutting rear. Bai Chongxi rushed 175th Division of 46th Army north to tail Konoye. After reinforcements, 21st Army launched offensive to drive and encircle south of Binyang; accumulated supplies in Nanning. On January 22, 18th and Konoye reached attack points. 38th Army Group HQ in Binyang bombed, communications cut, independent combat.

 

On January 28, Japanese launched offensive (Binyang Operation). On February 3, 41st Infantry of 5th Division occupied Kunlun Pass. On February 4, Ando reached captured Binyang. Nationalists lost Kunlun Pass, lines collapsed, many encircled. Battle ended with withdrawal; February 13, Japanese withdrew to Nanning, lines stalemated.

 

In the wake of the Binyang clashes, the 18th Division was indeed shifted to Guangzhou. Japanese records from January 28 to February 13 painted a picture of their spoils: they claimed to have captured 19 tanks, 5 light armored vehicles, 30 automobiles, 20 field or mountain guns, 13 rapid-fire guns, and 41 mortars. Additionally, they reported counting 27,041 Chinese bodies on the battlefield and taking 1,167 prisoners. The Chinese forces, for their part, regrouped with their main strength positioned east of the Yongqin Highway, while some elements maneuvered west to harass Japanese rear lines and coordinate actions from the north bank.

 

On February 21, 1940, Chiang arrived in Liuzhou, residing at Yangjiao Mountain. From February 22, he convened over 100 generals for a four-day Liuzhou Military Conference to review Guinan operations. Chiang demoted Bai Chongxi for poor supervision and Chen Cheng for poor guidance from first- to second-class generals. He also punished and rewarded other senior officers. The 46th Army and 175th Division were commended for discipline. On February 26, Fourth War Zone Commander Zhang Fakui announced: "No need for counterattack on Nanning currently." The entire Guinan Campaign ended.

 

The defeat embarrassed Chongqing; not only disrupted Guangxi-Vietnam traffic, but massive effort ended in rout. Pre-battle, Guilin Headquarters misjudged Japanese intentions; during, both Guangxi and Huangpu clique leaders showed poor performance, infuriating Chiang. Post-battle punishments were unprecedented in the war.

 

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In November 1939, Japanese forces, including the 5th Division and Taiwan Brigade, landed at Qinzhou Bay, captured Nanning, and advanced to Kunlun Pass. Chinese troops, under Bai Chongxi and reinforced by the elite 5th Army, launched fierce counteroffensives, recapturing Kunlun Pass in December with heavy casualties.