3.173 Fall and Rise of China: Fall of Wuhan

Last time we spoke about the beginning of the Wuhan Campaign. As Japanese forces pressed toward central China, Chiang Kai-shek faced a brutal choice: defend Wuhan with costly sieges or unleash a dangerous flood to buy time. The Yellow River breached its banks at Huayuankou, sending a wall of water racing toward villages, railways, and fields. The flood did not erase the enemy; it bought months of breathing room for a battered China, but at a terrible toll to civilians who lost homes, farms, and lives. Within Wuhan's orbit, a mosaic of Chinese forces struggled to unite. The NRA, split into competing war zones and factions, numbered about 1.3 million but fought with uneven equipment and training. The Japanese, deploying hundreds of thousands, ships, and air power, pressed from multiple angles: Anqing, Madang, Jiujiang, and beyond, using riverine forts and amphibious landings to turn the Yangtze into a deadly artery. Yet courage endured as troops held lines, pilots challenged the skies, and civilians, like Wang Guozhen, who refused to betray his country, chose defiance over surrender. The war for Wuhan was not a single battle but a testament to endurance in the face of overwhelming odds.

#173 The Fall of Wuhan

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 the last episode we began the Battle of Wuhan. Japan captured Anqing and gained air access to Jiujiang, Chinese defenses around the Yangtze River were strained. The southern Yangtze's Ninth War Zone held two key garrisons: one west of Poyang Lake and another in Jiujiang. To deter Japanese assault on Jiujiang, China fortified Madang with artillery, mines, and bamboo booms. On June 24, Japan conducted a surprise Madang landing while pressing south along the Yangtze. Madang's fortress withstood four assaults but suffered heavy bombardment and poison gas. Chinese leadership failures contributed to the fall: Li Yunheng, overseeing Madang, was away at a ceremony, leaving only partial contingents, primarily three battalions from marine corps units and the 313th regiment of the 53rd division, participating, totaling under five battalions. Reinforcements from Pengze were misrouted by Li's orders, arriving too late. Madang fell after three days. Chiang Kai-shek retaliated with a counterattack and rewarded units that recaptured Xiangshan, but further progress was blocked. Li Yunheng was court-martialed, and Xue Weiying executed.

Madang's loss opened a corridor toward Jiujiang. The Japanese needed weeks to clear minefields, sacrificing several ships in the process. With roughly 200,000 Chinese troops in the Jiujiang–Ruichang zone under Xue Yue and Zhang Fukui, the Japanese captured Pengze and then Hukou, using poison gas again during the fighting. The Hukou evacuation cut off many non-combat troops, with over 1,800 of 3,100 soldiers successfully evacuated and more than 1,300 missing drowned in the lake. Two weeks after Hukou's fall, the Japanese reached Jiujiang and overtook it after a five-day battle. The retreat left civilians stranded, and the Jiujiang Massacre followed: about 90,000 civilians were killed, with mass executions of POWs, rapes, and widespread destruction of districts, factories, and transport. Subsequently, the Southern Riverline Campaign saw Japanese detachments along the river advance westward, capturing Ruichang, Ruoxi, and other areas through October, stretching Chinese defenses thin as Japan pressed toward Wuchang and beyond.

On July 26, 1938, the Japanese occupied Jiujiang and immediately divided their forces into three routes: advancing toward De'an and Nanchang, then striking Changsha, severing the Yue-Han Railway, and surrounding Wuhan in an effort to annihilate the Chinese field army. The advance of the 101st and 106th Infantry Divisions slowed south of the Yangtze River, yet the Central China Expeditionary Army remained intent on seizing Ruichang and De'an to cut off Chinese forces around Mount Lu. To this end, the 9th and 27th Infantry Divisions were deployed to the sector, with the 9th regarded as an experienced unit that had fought in earlier campaigns, while the 27th was newly formed in the summer of 1938; this contrast underscored the rapidly expanding scope of the war in China as the Japanese Army General Staff continued mobilizing reservists and creating new formations. According to the operational plan, the 101st and 106th Divisions would push south toward De'an to pin Chinese defenders, while the 9th and 27th Divisions would envelop Chinese forces south of the river. Okamura Yasuji ordered five battalions from the 9th to move toward De'an via Ruichang, and the Hata Detachment was tasked with securing the area northwest of Ruichang to protect the 9th's flank. North of the Yangtze, the 6th Infantry Division was to move from Huangmei to Guangji, with Tianjiazhen as the ultimate objective; capturing Tianjiazhen would allow the 11th Army to converge on Wuhan from both north and south of the river.

The operation began when the 9th Division landed at Jiujiang, threatening the left flank of the Jinguanqiao line. The Chinese responded by deploying the 1st Corps to counter the 9th Division's left flank, which threatened the Maruyama Detachment's lines of communication. The Maruyama Detachment counterattacked successfully, enabling the rest of the 9th Division to seize Ruichang on August 24; on the same day, the 9th attacked the 30th Army defending Mount Min. The Chinese defense deteriorated on the mountain, and multiple counterattacks by Chinese divisions failed, forcing the 1st Corps to retreat to Mahuiling. The seizure of Ruichang and the surrounding area was followed by a wave of atrocities, with Japanese forces inflicting substantial casualties, destroying houses, and damaging property, and crimes including murder, rape, arson, torture, and looting devastating many villages and livelihoods in the Ruichang area. After Ruichang and Mount Min fell, the Maruyama Detachment and the 106th Infantry Division advanced on Mahuiling, seeking to encircle Chinese forces from the northwest, with the 106th forming the inner ring and the Maruyama Detachment the outer ring; this coordination led to Mahuiling's fall on September 3. The 27th Infantry Division, arriving in late August, landed east of Xiaochikou, providing the manpower to extend Japanese offensives beyond the Yangtze's banks and outflank Chinese defenders along the river. Its main objective was to seize the Rui-wu highway, a vital route for the continued advance toward Wuhan.

After the fall of Mahuiling, Japanese command altered its strategy. The 11th Army ordered the Maruyama Detachment to rejoin the 9th Infantry Division and press westward, while the 101st Infantry Division was to remain at Mahuiling and push south toward De'an along with the 106th Infantry Division. This divergent or "eccentric" offensive aimed to advance on Wuhan while protecting the southern flank. The renewed offensive began on September 11, 1938, with the 9th Infantry Division and Hata Detachment advancing west along the Rui-yang and Rui-wu highways toward Wuhan, followed days later by the 27th Infantry Division. Initially, the Japanese made solid progress from Ruichang toward a line centered on Laowuge, but soon faced formidable Chinese defenses. The 9th and 27th Divisions confronted the Chinese 2nd Army Corps, which had prepared in-depth positions in the mountains west of Sanchikou and Xintanpu. The 27th Division encountered stiff resistance from the 18th and 30th Corps, and although it captured Xiaoao by September 24, its vanguard advancing west of Shujie came under heavy attack from the 91st, 142nd, 60th, and 6th Reserve Infantry Divisions, threatening to encircle it. Only the southward advance of the 101st and 106th Divisions relieved the pressure, forcing the Chinese to redeploy the 91st and 6th Reserve Divisions to the south and thereby loosening the 27th's grip. After the redeployment, the 9th and 27th Divisions resumed their push. The 9th crossed the Fu Shui on October 9 and took Sanjikou on October 16, while the 27th seized Xintanpu on October 18. The Hata Detachment followed, capturing Yangxin on October 18 and Ocheng on October 23, further tightening Japanese control over the highways toward Wuhan. By mid-October, 11th Army commander Okamura Yasuji resolved to sever the Guangzhou-Hankou railway to disrupt Chinese lines. On October 22, the 9th and 27th Divisions attacked toward Jinniu and Xianning. By October 27, the 9th had captured Jinniu and cut the railway; the 27th Division extended the disruption further south. These actions effectively isolated Wuchang from the south, giving the Imperial Japanese Army greater leverage over the southern approaches to Wuhan.

The push south by the 101st and 106th Infantry Divisions pressed toward De'an, where they encountered the entrenched Chinese 1st Army Corps. The offensive began on September 16 and by the 24th, elements of the 27th Division penetrated deep into the area west of Baishui Street and De'an's environs. Recognizing the growing crisis, Xue Yue mobilized the nearby 91st and 142nd Divisions, who seized Nanping Mountain along the Ruiwu Line overnight, effectively cutting off the 27th Division's retreat. Fierce combat on the 25th and 26th saw Yang Jialiu, commander of the 360th Regiment of the 60th Division, die a heroic death. Zhang Zhihe, chief of staff of the 30th Group Army and an underground CCP member, commanded the newly formed 13th Division and the 6th Division to annihilate the Suzuki Regiment and recapture Qilin Peak. Learning of the 27th Division's trap, Okamura Yasuji panicked and, on the 25th, urgently ordered the 123rd, 145th, and 147th Infantry Regiments and mountain artillery of the 106th Division on the Nanxun Line, along with the 149th Regiment of the 101st Division on the Dexing Line, to rush to Mahuiling and Xingzi. To adapt to mountain warfare, some units were temporarily converted to packhorse formations. On the 27th, the 106th Division broke through the Wutailing position with force, splitting into two groups and pushing toward Erfangzheng and Lishan. By the 28th, the three regiments and mountain artillery of the 106th Division advanced into the mountain villages of Wanjialing, Leimingguliu, Shibaoshan, Nantianpu, Beixijie, and Dunshangguo, about 50 li west of De'an. On the same day, the 149th Regiment of the 101st Division entered the Wanjialing area and joined the 106th Division. Commanded by Lieutenant General Junrokuro Matsuura, the 106th Division sought to break out of Baicha and disrupt the Nanwu Highway to disrupt the Chinese retreat from De'an. At this juncture, Xue Yue's corps perceived the Japanese advance as a predatory, wolf-like maneuver and deemed it a strategic opportunity to counterattack. He resolved to pull forces from Dexing, Nanxun, and Ruiwu to envelop the enemy near Wanjialing, with the aim of annihilating them. Thus began a desperate, pivotal battle between China and Japan in northern Jiangxi, centered on the Wanjialing area.

The Japanese 106th Division found its rear communications cut off around September 28, 1938, as the Chinese blockade tightened. Despite the 27th Division's severed rear and its earlier defeat at Qilin Peak, Okamura Yasuji ordered a renewed push to relieve the besieged 106th by directing the 27th Division to attack Qilin Peak and advance east of Baishui Street. In this phase, the 27th Division dispatched the remnants of its 3rd Regiment to press the assault on Qilin Peak, employing poison gas and briefly reaching the summit. On September 29, the 142nd Division of the 32nd Army, under Shang Zhen, coordinated with the 752nd Regiment of the same division to launch a fierce counterattack on Qilin Peak at Zenggai Mountain west of Xiaoao. After intense fighting, they reclaimed the peak, thwarting the 27th Division's bid to move eastward to aid the 106th. Concurrently, a portion of the 123rd Regiment of the 106th Division attempted a breakout west of Baishui Street. Our 6th and 91st Divisions responded with a determined assault from the east of Xiaoao, blocking the 123rd Regiment east of Baishui Street. The victories at Qilin Peak and Baishui Street halted any merger between the eastern and western Japanese forces, enabling the Chinese army to seal the pocket and create decisive conditions for encircling the 106th Division and securing victory in the Battle of Wanjialing.

After the setback at Qilin Peak, Division Commander Masaharu Homma, defying Okamura Yasuji's orders to secure Baishui Street, redirected his focus to Tianhe Bridge under a pretext of broader operations. He neglected the heavily encircled 106th Division and pivoted toward Xintanpu. By September 30, Chinese forces attacked from both the east and west, with the 90th and 91st Divisions joining the assault on the Japanese positions. On October 1, the Japanese, disoriented and unable to pinpoint their own unit locations, telegrammed Okamura Yasuji for air support. On October 2, the First Corps received orders to tighten the encirclement and annihilate the enemy forces. Deployments were made to exploit a numerical advantage and bolster morale, placing the Japanese in a desperate position.

On October 3, 1938, the 90th and 91st Divisions launched a concerted attack on Nantianpu, delivering heavy damage to the Japanese force and showering Leimingguliu with artillery fire that endangered the 106th Division headquarters. By October 5, Chinese forces reorganized: the 58th Division of the 74th Army advanced from the south, the 90th Division of the 4th Army from the east, portions of the 6th and 91st Divisions from the west, and the 159th and 160th Divisions of the 65th Army from the north, tightening the surrounding cordon from four directions. On October 6, Xue Yue ordered a counterattack, and by October 7 the Chinese army had effectively cut off all retreat routes. That evening, after fierce hand-to-hand combat, the 4th Army regained the hilltop, standing at a 100-meter-high position, and thwarted any Japanese plan to break through Baicha and sever Chinese retreat toward De'an. By October 8, Lieutenant Colonel Sakurada Ryozo, the 106th Division's staff officer, reported the division's deteriorating situation to headquarters. The telegram signaled the impending collapse of the 106th Division. On October 9, Kuomintang forces recaptured strategic positions such as Lishan, tightening encirclement to a small pocket of about three to four square kilometers in Nantianpu, Leimingguliu, and Panjia. That night, the vanguard attacked the Japanese 106th Division's headquarters at Leimingguliu, engaging in close combat with the Japanese. Matsuura and the division's staff then took up arms in defense. In the early hours of October 10, Japanese forces launched flares that illuminated only a narrow arc of movement, and a limited number of troops fled northwest toward Yangfang Street. The two and a half month battle inflicted tremendous casualties on the Japanese, particularly on the 101st and 106th divisions. These two formations began with a combined strength of over 47,000 troops and ultimately lost around 30,000 men in the fighting. The high casualty rate hit the Japanese officer corps especially hard, forcing General Shunroku Hata to frequently airdrop replacement officers onto the besieged units' bases throughout the engagement. For the Chinese, the successful defense of Wanjialing was pivotal to the Wuhan campaign.

Zooming out at a macro level a lot of action was occurring all over the place. Over in Shandong, 1,000 soldiers under Shi Yousan, who had defected multiple times between rival warlord cliques and operated as an independent faction, occupied Jinan and held it for a few days. Guerrillas briefly controlled Yantai. East of Changzhou extending to Shanghai, another non-government Chinese force, led by Dai Li, employed guerrilla tactics in the Shanghai suburbs and across the Huangpu River. This force included secret society members from the Green Gang and the Tiandihui, who conducted executions of spies and perceived traitors, losing more than 100 men in the course of operations. On August 13, members of this force clandestinely entered the Japanese air base at Hongqiao and raised a Chinese flag. Meanwhile, the Japanese Sixth Division breached the defensive lines of Chinese 31st and 68th Armies on July 24 and captured Taihu, Susong, and Huangmei Counties by August 3. As Japanese forces advanced westward, the Chinese Fourth Army of the Fifth War Zone deployed its main strength in Guangji, Hubei, and Tianjia Town to intercept the offensive. The 11th Army Group and the 68th Army were ordered to form a defensive line in Huangmei County, while the 21st and 29th Army Groups, along with the 26th Army, moved south to outflank the Japanese. The Chinese recaptured Taihu on August 27 and Susong on August 28. However, with Japanese reinforcements arriving on August 30, the Chinese 11th Army Group and the 68th Army were unable to sustain counteroffensives and retreated to Guangji County to continue resisting alongside the 26th, 55th, and 86th Armies. The Chinese Fourth Army Group directed the 21st and 29th Army Groups to flank the Japanese from the northeast of Huangmei, but they failed to halt the Japanese advance. Guangji fell on September 6, and while Guangji was recovered by the Chinese Fourth Corps on September 8, Wuxue was lost on the same day.

Zooming back in on the Wuhan Front, the Japanese focus shifted to Tianjiazhen. The fortress of Tianjiazhen represented the 6th Infantry Division's most important objective. Its geographic position, where the Yangtze's two banks narrow to roughly 600 meters, with cliffs and high ground overlooking the river, allowed Chinese forces to deploy gun batteries that could control the river and surrounding terrain. Chinese control of Tianjiazhen thus posed a serious obstacle to Japan's amphibious and logistical operations on the Yangtze, and its seizure was deemed essential for Japan to advance toward Wuhan. Taking Tianjiazhen would not be easy: overland approaches were impeded by mountainous terrain on both sides of the fortress, while an amphibious assault faced fortified positions and minefields in the narrow river. Recognizing its strategic importance, Chinese forces reinforced Tianjiazhen with three divisions from central government troops, aiming to deter an overland assault. Chinese preparations included breaching several dykes and dams along the Yangtze to flood expanses of land and slow the Japanese advance; however, the resulting higher water levels widened the river and created a more accessible supply route for the Japanese. Instead of relying on a long overland route from Anqing to Susong, the Japanese could now move supplies directly up the Yangtze from Jiujiang to Huangmei, a distance of only about 40 kilometers, which boosted the 6th Division's logistics and manpower.

In August 1938 the 6th Infantry Division resumed its northward push, facing determined resistance from the 4th Army Corps entrenched in a narrow defile south of the Dabie Mountains, with counterattacks from the 21st and 27th Army Groups affecting the 6th's flank. The Dabie Mountains are a major mountain range located in central China. Running northwest to southeast, they form the main watershed between the Huai and Yangtze rivers. The range also marks the boundary between Hubei Province and its neighboring provinces of Henan to the north and Anhui to the east. By early September the 6th had captured Guangji, providing a staging ground for the thrust toward Tianjiazhen, though this extended the division's long flank: after Guangji fell, it now faced a 30-kilometer front between Huangmei and Guangji, exposing it to renewed Chinese pressure from the 21st and 27th Army Groups. This constrained the number of troops available for the main objective at Tianjiazhen. Consequently, the Japanese dispatched only a small force, three battalions from the Imamura Detachment, to assault Tianjiazhen, betting that the fortress could be taken within a week. The KMT, learning from previous defeats, reinforced Tianjiazhen with a stronger infantry garrison and built obstacles, barbed wire, pillboxes, and trench networks, to slow the assault. These defenses, combined with limited Japanese logistics, six days of rations per soldier, made the operation costly and precarious.

The final Japanese assault was postponed by poor weather, allowing Chinese forces to press counterattacks: three Chinese corps, the 26th, 48th, and 86th, attacked the Imamura Detachment's flank and rear, and by September 18 these attacks had begun to bite, though the floods of the Yangtze prevented a complete encirclement of the eastern flank. Despite these setbacks, Japanese riverine and ground operations continued, aided by naval support that moved up the Yangtze as Matouzhen's batteries were overtaken. After Matouzhen fell and enabled a secure riverine supply line from Shanghai to Guangji, 11th Army commander Okamura Yasuji quickly sent relief supplies upriver on September 23. These replenishments restored the besieged troops near Tianjiazhen and allowed the Japanese to resume the offensive, employing night assaults and poison gas to seize Tianjiazhen on September 29, 1938, thereby removing a major barrier to their advance toward Wuhan along the Yangtze.

The 11th Army pressed north along the Yangtze while the 2nd Army, commanded by Prince Naruhiko Higashikuni, concentrated the 3rd, 10th, 13th, and 16th Infantry Divisions around Hefei with initial aims at Lu'an and Heshan and the broader objective of moving toward the northern foothills of the Dabie Mountains. When Chinese forces began destroying roads west of Lu'an, Naruhiko shifted the 2nd Army's plan. Rather than pushing along a line from Lu'an to Heshan, he redirected toward the Huangchuan–Shangcheng corridor, where more intact roads remained accessible, and Chinese withdrawals in the Huangchuan–Shangceng area to counter the 11th Army's Yangtze advance allowed the 2nd Army to gain speed in the early stage of its offensive. The 10th and 13th Infantry Divisions were ordered to begin their advance on August 27, facing roughly 25,000 Chinese troops from the Fifth War Zone's 51st and 77th Corps, and achieving notable early gains. The 10th captured Lu'an on August 28, followed by the 13th taking Heshan on August 29. The 10th then seized Kushi on September 7. Meanwhile, the 13th crossed the Shi River at night in an attempt to seize Changbailing, but encountered stiff resistance from multiple Chinese divisions that slowed its progress. To bolster the effort, Naruhiko ordered the Seiya Detachment from the 10th Division—three infantry battalions—to reinforce the 13th. Despite these reinforcements, momentum remained insufficient, so he deployed the 16th Infantry Division, which had arrived at Yenchiachi, to assault Shangcheng from the north. After crossing the Shi River at Yanjiachi, the 16th outflanked Shangcheng from the north, coordinating with the 13th from the south; the Chinese withdrew and Shangcheng fell. Following this success, Naruhiko ordered the 13th and 16th Divisions to push deeper into the Dabie Mountains toward Baikou and Songfu, while the 10th and 3rd Divisions moved toward Leshan and Xinyang, with Xinyang, a crucial Beijing–Wuhan Railway node, representing a particularly important objective. The Japanese advance progressed steadily through the Dabie Mountains, with the 10th executing bold maneuvers to outflank Leshan from the south and the 3rd penetrating toward the Beijing–Wuhan railway north of Xinyang, collectively disrupting and cutting the railway near Xinyang in October. An independent unit, the Okada Detachment, operated between these forces, advancing through Loshan before sealing Xinyang on October 12. The seizure of Xinyang effectively severed Wuhan's northern artery from external reinforcement and resupply, signaling a decisive turn against Wuhan as a Chinese stronghold. While the 2nd Army advanced in the Dabie Mountains, another critical development was taking place far to the south.

By the end of 1937, southern China became more crucial to the Republic of China as a lifeline to the outside world. Guangzhou and Hong Kong served as some of the last vital transportation hubs and sources of international aid for Chiang Kai-Shek, with approximately 80 percent of supplies from abroad reaching Chinese forces in the interior through Guangzhou. Imperial General Headquarters believed that a blockade of Guangdong province would deprive China of essential war materiel and the ability to prolong the war. As I always liked to term it, the Japanese were trying to plug up the leaks of supplies coming into China, and Guangzhou was the largest one. In 1936 the Hankow-Canton railway was completed, and together with the Kowloon-Canton railway formed a rapid all-rail link from south China to central and northern China. For the first sixteen months of the war, about 60,000 tons of goods transited per month through the port of Hong Kong. The central government also reported the import of 1.5 million gallons of gasoline through Hong Kong in 1938, and more than 700,000 tons of goods would eventually reach Hankou using the new railway. In comparison, the Soviet Union in 1937 was sending war materiel through Xinjiang to Lanzhou using camels, with Chinese raw materials traveling back either the same route or via Hong Kong to Vladivostok. By 1940, 50,000 camels and hundreds of trucks were transporting 2,000–3,000 tons of Soviet war material per month into China.

Japanese planning for operations began in early November 1937, with the blockade's objectives centered on seizing a portion of Daya Bay and conducting air operations from there. In December 1937, the 5th Army, including the 11th Division, the Formosa Mixed Brigade, and the 4th Air Brigade, were activated in Formosa under Lt. Gen. Motoo Furusho to achieve this objective. Due to the proximity of Daya Bay to Hong Kong, the Japanese government feared potential trouble with Britain, and the operation was subsequently suspended, leading to the deactivation of the 5th Army. By June 1938, the Battle of Wuhan convinced Imperial General Headquarters that the fighting could not be localized. The headquarters reversed policy and began preparations to capture Guangzhou and to expedite the settlement of the war.

During the peak of the battles of Shanghai and Nanjing, urgent demands for aerial support at the Battle of Taiyuan in the north and at Canton in the south forced the Nationalist Air Force of China to split the 28th Pursuit Squadron and the 5th Pursuit Group , based at Jurong Airbase in the Nanking defense sector. The squadron was divided into two smaller units: Lt. Arthur Chin led one half toward Canton, while Capt. Chan Kee-Wong led the other half to Taiyuan. On September 27, 1937, the 28th PS under Lt. Arthur Chin dispatched four Hawk IIs from Shaoguan Airbase, and the 29th PS under Lt. Chen Shun-Nan deployed three Hawk IIIs from Tianhe Airbase. Their mission was to intercept Japanese IJNAF G3M bombers attempting to strike the Canton–Hankow railway infrastructure. The two flights engaged the Japanese bombers over Canton, claiming at least two kills; one G3M dumped fuel and ditching off the coast of Swatow, with its crew rescued by a British freighter, though one of the gunners died of battle injuries. In October 1937, amid mounting demands and combat losses, the Chinese government ordered 36 Gloster Gladiator Mk.I fighters, whose performance and firepower surpassed that of the Hawk IIs and IIIs, and most of these would become frontline fighters for the Canton defense sector as the war extended into 1938.

On February 23, 1938, Capt. John Huang Xinrui, another Chinese-American volunteer pilot, took command of the renewed 29th PS, now equipped with the Gladiators. He led nine Gladiators from Nanxiong Airbase on their first active combat over Canton, supporting three Gladiators from the 28th PS as they intercepted thirteen Nakajima E8N fighter-attack seaplanes launched from the seaplane tenders Notoro Maru and Kinugasa Maru. The battle proved challenging: most of the Gladiators' machine guns jammed, severely reducing their firepower. Despite this, five of the E8Ns were shot down, confirmed by Capt. Huang and his fellow pilots who managed to strike the Japanese aircraft with only one, two, or three functioning guns per Gladiator. Chin later revealed that the gun jams were caused by defective Belgian-made ammunition. The combat nevertheless proved tragic and costly: Lt. Xie Chuanhe (Hsieh Chuan-ho) and his wingman Lt. Yang Rutong pursued the E8Ns but were stymied by inoperable weapons, with Lt. Yang killed in the counterattack, and Lt. Chen Qiwei lost under similar circumstances.

The 4th War Area Army, commanded by He Yingqin, was assigned to the defense of south China in 1938. General Yu Hanmou led the 12th Army Group defending Guangdong province. The region's defense included about eight divisions and two brigades of regular army troops stationed around Guangzhou, with an additional five divisions of regular troops deployed in Fujian. The 4th War Area Army totaled roughly 110,000 regular army troops. By this time, most regular army units in Guangxi and four Guangdong divisions had been redirected north to participate in the Battle of Wuhan. Beyond the regular army, two militia divisions were deployed near Guangzhou, and the Guangxi militia comprised five divisions. Militia units were typically raised from local civilians and disbanded as the army moved through new areas. Their roles centered on security, supply transportation, and reconnaissance. Guangdong's main defensive strength was concentrated in Guangzhou and the immediate environs to the city's east. Other Chinese forces defended Chaozhou and western Guangdong. Defensive fortifications included the Humen fortress guarding the Pearl River mouth and three defensive lines near Daya Bay. Guangzhou housed three batteries of four three-inch guns, a battery of three 120mm guns, and Soviet-supplied 37mm anti-aircraft guns.

The Imperial Japanese Navy conducted an aerial and naval interdiction campaign aimed at China's communication lines to neighboring regions. Japan believed that the blockade would hasten the end of the war, and disruption of the Chinese logistics network was the primary objective in Guangdong province from August 1937 until October 1938. The 5th Fleet's blockading actions extended along the coast from Haimenchen, Zhejiang to Shantou, with the 5th Destroyer Squadron patrolling the coast south of Shantou. At times, units from the Marianas were deployed to support coastal blockade operations in south China, usually consisting of cruisers accompanied by destroyer flotillas. One or two aircraft carriers and fleet auxiliaries would also be on station. Naval interdictions focused on stopping junks ferrying military supplies from Hong Kong to coastal China. The first recorded attack occurred in September 1937 when eleven junks were sunk by a Japanese submarine. Although Japan successfully blockaded Chinese shipping and ports, foreign shipping could still enter and depart from Hong Kong. The central government had established Hong Kong as a warehouse for munitions and supplies to pass through.

Aerial interdictions targeted Chinese railway bridges and trains in Guangdong. Starting in October 1937, the Japanese launched air raids against the Sunning railway, focusing on government facilities and bridges in Jiangmen and towns along the railway. By 1938, airstrikes against the Kowloon–C Canton railway became common, with damaged trains periodically found along the line. An air-defense early warning system was created to divert trains during raids into forested areas that offered overhead concealment. In May 1938, the Colonial Office and the Foreign Office approved a Chinese request to construct and operate a locomotive repair yard within the New Territories to keep the railway operational. Airstrikes against rail facilities in Guangzhou were designed to interrupt rail supplies from Hong Kong so Japan would not need to commit to land operations in south China. However, the air raids did not severely impede railway operations or stop supplies moving through Hunan or Guangxi.

The blockade in south China also targeted aircraft flying out of Hong Kong. In November 1937, a Royal Navy aircraft from HMS Eagle encountered Japanese naval anti-aircraft fire off the coast of Hong Kong. In December 1937, fifteen Japanese bombers overflew Lantau Island and the Taikoo docks. In August 1938, Japanese naval aircraft shot down a China National Aviation Corporation passenger plane, and two Eurasia Aviation Corporation passenger planes were shot down the following month. Beyond military targets, the Japanese conducted politically motivated terror bombing in Guangzhou. Bombing intensified from May to June 1938 with incendiary munitions and low-level strafing attacks against ships. The Imperial Japanese Navy Air Service, operating from Formosa and the carrier Kaga, conducted about 400 airstrikes during this period and continued into July. By the end of the summer, Guangzhou's population had dwindled to approximately 600,000 from an original 1.3 million. From August 1937 to October 1938, casualties in Guangzhou were estimated at 6,000 killed and 8,000 injured.

On October 12, 1938, Japanese forces from the 21st Army, including the 5th, 18th, and 104th Infantry Divisions, landed in Guangzhou, launching the operation at 4:00 am with elements of the 5th and 18th Divisions hitting Aotou and elements of the 104th Division landing at Hachung in Bias Bay. Initially totaling about 30,000 men, they were soon reinforced by a further 20,000, and resistance was minimal because most of Yu Hanmou's 12th Army Group had been redeployed to central China to defend approaches to Wuhan, leaving only two regular Chinese divisions, the 151st and 153rd, to defend the region. By the night of October 12, the Japanese had established a 10-kilometer-deep beachhead and advanced inland; on October 13 they seized the towns of Pingshan and Tamshui with little opposition, and on October 15 they converged on Waichow and captured it. The fall of Pingshan, located on the Sai Kong River with a deep, broad river and only a flimsy crossing, and Waichow, where Chinese defenses included trenches and concrete pillboxes, surprised observers since these positions had been prepared to resist invasion; nonetheless, Chinese forces fled, opening the road to Guangzhou for the Japanese. Between October 16 and 19, three Japanese columns pushed inland, with the easternmost column crossing the East River on the 16th and the 5th Infantry Division capturing Sheklung on the 19th as Chinese forces retreated. By the night of October 20, Guangzhou's defenders withdrew and adopted a scorched-earth policy to deny resources to the invaders. On October 21, Japanese tanks entered Guangzhou without infantry support, and a regiment from the 5th Infantry Division captured the Bocca Tigris forts with no resistance. With Guangzhou secured, the Guangzhou–Wuhan railway and the Hong Kong–Guangzhou railway were severed, supplies to Wuhan were cut, Chiang Kai-Shek faced a daunting and depressing task, he had to abandon Wuhan.

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The Yangtze became a bloodied artery as Chinese and Japanese forces clashed from Anqing to Jiujiang, Madang to Tianjiazhen. A mosaic of Chinese troops, filled with grit and missteps, held lines while civilians like Wang Guozhen refused to surrender. The siege of Wanjialing crowned Chinese resilience, even as Guangzhou buckled under a relentless blockade. The Fall of Wuhan was all but inevitable.