Last time we spoke about the Battle of Taierzhuang. Following the fall of Nanjing in December 1937, the Second Sino-Japanese War entered a brutal phase of attrition as Japan sought to consolidate control and press toward central China. Chinese defense prioritized key rail corridors and urban strongholds, with Xuzhou, the JinPu and Longhai lines, and the Huai River system forming crucial lifelines. By early 1938, Japanese offensives aimed to link with forces around Beijing and Nanjing and encircle Chinese positions in the Central Yangtze region, threatening Wuhan. In response, Chiang Kai-shek fortified Xuzhou and expanded defenses to deter a pincer move, eventually amassing roughly 300,000 troops along strategic lines. Taierzhuang became a focal point when Japanese divisions attempted to press south and link with northern elements. Chinese commanders Li Zongren, Bai Chongxi, Tang Enbo, and Sun Lianzhong coordinated to complicate Japanese plans through offensive-defensive actions, counterattacks, and encirclement efforts. The victory, though numerically costly, thwarted immediate Japanese objectives and foreshadowed further attritional struggles ahead.

#171 The Flooding of the Yellow River

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We last left off with a significant event during the Xuzhou campaign. Three Japanese divisions under General Itagaki Seishiro moved south to attack Taierzhuang and were met by forces commanded by Li Zongren, Sun Lianzhong, and Tang Enbo, whose units possessed a decent amount of artillery. In a two-week engagement from March 22 to April 7, the battle devolved into a costly urban warfare. Fighting was vicious, often conducted in close quarters and at night. The urban environment negated Japanese advantages in armor and artillery, allowing Chinese forces to contend on equal terms. The Chinese also disrupted Japanese logistics by resupplying their own troops and severing rear supply lines, draining Japanese ammunition, supplies, and reinforcements. By April 7, the Japanese were compelled to retreat, marking the first Chinese victory of the war. However both sides suffered heavy losses, with around 20,000 casualties on each side.

In the aftermath of this rare victory, Chiang Kai-Shek pushed Tang Enbo and Li Zongren to capitalize on their success and increased deployments in the Taierzhuang theater to about 450,000 troops. Yet the Chinese Army remained hampered by fundamental problems. The parochialism that had crippled Chiang’s forces over the preceding months resurfaced. Although the generals had agreed to coordinate in a war of resistance, each still prioritized the safety of his own troops, wary of Chiang’s bid to consolidate power. Li Zongren, for example, did not deploy his top Guangxi provincial troops at Taierzhuang and sought to shift most of the fighting onto Tang Enbo’s forces. Chiang’s colleagues were mindful of the fates of Han Fuju of Shandong and Zhang Xueliang of Manchuria: Han was executed for refusing to fight, while Zhang, after allowing Chiang to reduce the size of his northeastern army, ended up under house arrest. They were right to distrust Chiang. He believed, after all, that provincial armies should come under a unified national command, which he would lead. From a national-unity perspective, his aspiration was not unreasonable. But it fed suspicion among other military leaders that participation in the anti-Japanese war would dilute their power. The divided nature of the command also hindered logistics, making ammunition and food supplies to the front unreliable and easy to cut off.

By late April the Chinese had reinforced the Xuzhou area to between 450,000-600,000 to capitalize on their victory. However these armies were plagued with command and control issues. Likewise the Japanese licked their wounds and reinforced the area to roughly 400,000, with fresh troops and supplies flowing in from Tianjin and Nanjing. The Japanese continued with their objective of encircling Chinese forces. The North China Area Army comprised four divisions and two infantry brigades drawn from the Kwantung Army, while the Central China Expeditionary Army consisted of three divisions and the 1st and 2nd Tank Battalions along with motorized support units. The 5th Tank Battalion supported the 3rd Infantry Division as it advanced north along the railway toward Xuzhou. Fighting to the west, east, and north of Xuzhou was intense, resulting in heavy casualties on both sides. On 18 April, the Japanese advanced southward toward Pizhou. Tang Enbo's 20th Army Corps, together with the 2nd, 22nd, 46th, and 59th corps, resisted fiercely, culminating in a stalemate by the end of April. The 60th Corps of the Yunnan Army engaged the Japanese 10th Division at Yuwang Mountain for nearly a month, repelling multiple assaults. By the time it ceded its position to the Guizhou 140th Division and withdrew on 15 May, the corps had sustained losses exceeding half of its forces. Simultaneously, the Japanese conducted offensives along both banks of the Huai River, where Chinese defenders held out for several weeks. Nevertheless, Japanese artillery and aerial bombardment gradually tilted the balance, allowing the attackers to seize Mengcheng on 9 May and Hefei on 14 May.

From there, the southern flank split into two parts: one force moved west and then north to cut off the Longhai Railway escape route from Xuzhou, while another division moved directly north along the railway toward Suxian, just outside Xuzhou. Simultaneously, to the north, Japanese units from north China massed at Jining and began moving south beyond Tengxian. Along the coast, an amphibious landing was made at Lianyungang to reinforce troops attacking from the east. The remaining portions of Taierzhuang were captured in May, a development symbolically significant to Tokyo. On 17 May, Japanese artillery further tightened the noose around Xuzhou, striking targets inside the city.

To preserve its strength, the Nationalist government ordered the abandonment of Xuzhou and directed its main forces to break out toward northern Jiangsu, northern Anhui, and eastern Henan. To deter the Japanese army’s rapid westward advance and penetration into northern Henan and western Shandong, many leading military and political figures within the Nationalist government proposed breaching dams over the Yellow River to delay the offensive, a strategy that would have been highly advantageous to the Nationalist forces at the time. Chiang Kai-shek vetoed the proposal outright, insisting that the Nationalist army could still resist. He understood that with tens of millions of Chinese lives at stake and a sliver of hope remaining, the levee plan must not be undertaken. Then a significant battle broke out at Lanfeng. Chiang also recognized that defeat could allow the elite Japanese mechanized divisions, the 14th, 16th, and 10th, to advance directly toward Zhengzhou. If Zhengzhou fell, the Japanese mechanized forces on the plains could advance unimpeded toward Tongguan. Their southward push would threaten Xi’an, Xiangfan, and Nanyang, directly jeopardizing the southwest’s rear defenses. Concurrently, the Japanese would advance along the Huai River north of the Dabie Mountains toward Wuhan, creating a pincer with operations along the Yangtze River.

Now what followed was arguably the most important and skillful Chinese maneuver of the Xuzhou campaign: a brilliantly executed strategic retreat to the south and west across the Jinpu railway line. On May 15, Li Zongren, in consultation with Chiang Kai-shek, decided to withdraw from Xuzhou and focus on an escape plan. The evacuation of civilians and military personnel began that day. Li ordered troops to melt into the countryside and move south and west at night, crossing the Jinpu Railway and splitting into four groups that would head west. The plan was to regroup in the rugged Dabie Mountains region to the south and prepare for the defense of Wuhan. Li’s generals departed reluctantly, having held out for so long; Tang Enbo was said to have wept. Under cover of night, about forty divisions, over 200,000 men, marched out of Japanese reach in less than a week. A critical moment occurred on May 18, when fog and a sandstorm obscured the retreating troops...