Operation Chahar

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Operation Chahar
Part of
Chahar – Suiyuan
Result Japanese victory
Belligerents

 Japan

 ChinaCommanders and leaders
Hideki Tōjō
Demchugdongrub
Republic of China (1912–1949)
Tang Enbo
Republic of China (1912–1949) Chiang Kai-shek
Republic of China (1912–1949) Yan Xishan
Republic of China (1912–1949) Fu ZuoyiStrength 90,000 Kwantung Army troops
60,000 Mongolian and Manchurian troops[1] unknownCasualties and losses unknown 26,000[1]

Operation Chahar (

Battle of Beiping-Tianjin at the beginning of Second Sino-Japanese War
.

This was the second attack by the

Hideki Tōjō, the chief of staff of the Kwantung Army. A second force from the Beiping Railway Garrison Force, later the 1st Army under General Kiyoshi Katsuki
, was also involved.

Japanese Order of battle

The Chinese forces opposing this invasion of Suiyuan were the Suiyuan Pacification Headquarters under the command of General

Chahar, was made its deputy commander, defending Chahar with the 143rd Division and two Brigades. General Tang Enbo was sent by Chiang Kai-shek with the 13th and 17th Army from the Central Army and made Frontline Commander in Chief. The 1st Cavalry Army was sent to Chahar under the command of Zhao Chengshou, facing the Mongolian forces of Demchugdongrub
.

Chinese Order of battle

Following the loss of Beiping, Tang Enbo's 13th Army (4th and 89th Divisions) took up positions in depth along the Peking–Suiyuan Railway at

Huailai
, on the railroad to the rear of Tang's forces. Zhao Chengshou's 1st Cavalry Army, Liu Ruming's 143rd Division, and two Peace Preservation Brigades began an attack on the Mongol forces in northern Chahar.

Battles around Nankou

On August 8, the Japanese

Shigiyasu Suzuki, began their attack on the left flank of the 13th Corps position at Nankou
, but were thwarted after three days by the difficult terrain and the stubborn resistance of the Chinese. A new attack on August 11, supported by tanks and aircraft, took Nankou Station, after which Gen. Suzuki's brigade advanced on Juyong Pass.

That same day, Chiang Kai-shek ordered the activation of the 14th Group Army (10th, 83rd, and 85th Divisions) under Gen.

Liangxiang and Chaili[clarification needed] to distract them, and sent a detachment to Heilung Pass[clarification needed
] to cover the advance of 14th Group Army. From the dates on a Japanese map of the battle, these forces did not reach the area until September, when it was too late, and clashed with Japanese forces from September 9–17 without achieving its objective.

On August 12, Tang Enbo's army counterattacked, surrounding the Japanese and cutting them off from their supplies and communications. On August 14,

Juyongguan
.

On August 16, Itagaki arrived at Nankou and began an enveloping attack on the right flank of 13th Army, making a five pronged attack at Huanglaoyuan. The 7th Brigade of 4th Division under Shi Jue was moved to block this maneuver, and reinforcements of Li Xianzhou's 21st Division and Zhu Huaibing's 94th Division were brought up, engaging in days of heavy fighting. On August 17 General Yan Xishan, Director of the Taiyuan Pacification Headquarters, directed the 7th Group Army, under Fu Zuoyi, to move its 72nd Division and three brigades by rail from Datong to Huailai to reinforce Tang Enbo's forces.

Battle of the Great Wall

Meanwhile, in northern Chahar the Chinese 1st Cavalry Army captured

Shangyi and Huade from the puppet Mongolian Army of Demchugdongrub. Elements of the 143rd Division took Zhongli, while its main force reached Zhangbei. During this Chinese advance the Japanese Chahar Expeditionary Force under Lt. General Hideki Tōjō, composed of the mechanized 1st Independent Mixed Brigade and the 2nd and 15th Mixed Brigades, gathered for a counteroffensive from Zhangbei to Kalgan
.

From August 18–19 the Chahar Expeditionary Force counterattacked from Zhangbei, and took Shenweitaiko[clarification needed] on the Great Wall and the Hanno Dam. The scattered and poorly equipped Chinese forces were unable to stop the Japanese, who now threatened the Peking–Suiyuan Railway at Kalgan. On August 20 Gen. Fu Zuoyi's 7th Group Army diverted its 200th and 211th Brigades, which had been moving south by rail to join Gen. Tang Enbo's forces, back to defend Kalgan. Fu's remaining 72nd Division arrived to reinforce Chenpien, and his 7th Separate Brigade was sent to defend the railhead at Huailai.

On August 21, the Japanese forces broke through at the villages of Henglingcheng[clarification needed] and Chenbiancheng[clarification needed]. Gen. Tang Enbo's forces awaiting reinforcement; but, having suffered over 50% casualties, still defended Huailai, Juyong Pass, and Yenqing. Liu Ruming's 143rd Division fell back to defend Kalgan from the advancing Japanese.

On August 23, as Seishirō Itagaki's 5th Division pushed toward Huailai from Chenpien against Ma Yenshou's 7th Separate Brigade, advance elements of the 14th Army Group arrived on the Japanese flank at Chingpaikou[clarification needed], driving off the Japanese outpost there and contacting the Japanese forces advancing to Chenpien and the front beyond. However, they were delayed in crossing the Yongding River, and their attack was delayed until it was too late to stop the Japanese advance. Due to poor communications they also failed to link up with Gen. Tang En-po's forces during the battle. After 8 days and 8 nights fighting, Itagaki, on August 24, linked up with the Kwantung army's 2nd Independent Mixed Brigade at Xiahuayuan.

Withdrawal

On August 26, Gen. Tang Enbo's forces were ordered to break out toward the Sangchien River[clarification needed] while Liu Ruming's forces were ordered to withdraw to the far side of the Hsiang-yang River[clarification needed].

On August 29 the Japanese unit, called the Oui Column by the Chinese and the Ohizumi Detachment (大泉支隊) by the Japanese, attacked. According to Hsu Long-hsuen this unit moved south from Tushihkou[clarification needed], and on August 30 attacked Yenching via Chihcheng, but was repulsed by the Chinese 17th Army. A Japanese map of the campaign shows that the unit moved to Guyuan (沽源) on August 25 and to Xuanhua (宣化) by September 7, cutting the railroad in the rear of Tang's forces and east of Chinese forces along the Great Wall.[1]

According to the Chinese account, after repulsing the Oui Column's attack the Chinese 17th Army withdrew to join the rest of Tang Enbo's force on the far side of the Sangchien River.

Kalgan fell to the Japanese on August 27. After Gen. Fu Zuoyi's 200th and 211th Brigades failed in a counterattack to recapture Kalgan, Fu's forces fell back to the west to defend the railway to Suiyuan at Chaikoupao[clarification needed
]. This brought an end to Operation Chahar.

According to Time magazine, on September 4 the Japanese-aligned South Chahar Government was set up at Kalgan. After the fall of Kalgan, Chahar's "complete independence" from China was declared by "100 influential persons", headed by Demchugdongrub, a pro-Japanese Mongolian who had long been the head of the "Inner Mongolia for Inner Mongolians" movement. It was Demchugdongrub, with his Mongolian levies, who helped the Japanese to take Kalgan. Demchugdongrub was rewarded for his collaboration with the highest position in this new Japanese puppet state, the Mongol United Autonomous Government.

Notes

  • Ohizumi Detachment (大泉支隊). It was a battalion from 4th Infantry Regiment of 2nd Division under the Kwantung Army. But, its course is different than the Chinese account says. It moved from Guyuan (沽源) to Xuanhua (宣化). See [2]

References

Sources

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