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Hundred Regiments Offensive
Part of The Second Sino-Japanese War
Hundred Regiments Offensive 1940.jpg
Chinese Communist soldiers holding the flag of the Republic of China.
Date August 20 – December 5 1940
Location North China
Result Chinese victory
8th Route Army Japan North China Area Army
Peng Dehuai
Zhu De
Hayao Tada
400,000 830,000
Casualties and losses
22,000[1] 46,000 in which 20,900 were Japanese[2]

The Hundred Regiments Offensive (Chinese: 百團大戰) (August 20 – December 5, 1940)[3] was a major campaign of the Communist Party of China's Red Army commanded by Peng Dehuai against the Imperial Japanese Army in Central China.



Between 1939 and 1940, the Japanese occupiers launched more than 109 small campaigns involving around 1,000 combatants each and 10 large campaigns of 10,000 men each to wipe out Communist guerrillas in the Hebei and Shandong plains. In addition, Wang Jingwei's anti-Communist puppet government had its offensive against the CCP guerrillas. Also, there was a general sentiment among the anti-Japanese resistance forces, particularly in the Kuomintang, that the CCP was not contributing enough to the war effort, and that they were only interested in expanding their power base. It was out of these circumstances that the CCP planned to stage a great offensive to prove that they were helping the war effort and to mend KMT-CCP relations.

The Battle

The Japanese North China Area Army estimated the strength of communist regulars to be about 88,000 in December 1939. Two years later, they revised the estimate to 140,000. On the eve of the battle, the Communist forces grew to 400,000 men strong, in 115 regiments. The extraordinary success and expansion of the Eighth Route Army against the Japanese had Zhu De and the rest of the military leadership hoping that they could engage the Japanese army and win.

By 1940, growth was so impressive that Zhu De ordered a coordinated offensive by most of the communist regulars (46 regiments from the 115th Division, 47 from the 129th, and 22 from the 120th) against the Japanese-held cities and the railway lines linking them. From 20 August to 10 September, communist forces attacked the railway line that separated the communist base areas, chiefly those from Dezhou to Shijiazhuang in Hebei, Shijiazhuang to Taiyuan in central Shanxi, and Taiyuan to Datong in northern Shanxi. They succeeded in blowing up bridges and tunnels and ripping up track, and went on for the rest of September to attack Japanese garrisons frontally, taking excessive casualties (22,000 regulars, compared to Japanese losses of 3,000 or 4,000). In all, about six hundred miles of railways were destroyed and the Chingching coal mine, which was important to the Japanese war industry, was rendered inoperative for six months. It was the greatest victory the CCP fought and won during the war.

However, from October to December, the Japanese responded in force, reasserting control of railway lines and conducting aggressive "mopping up operations" in the rural areas around them.


When General Yasuji Okamura took command of the North China Area Army in the summer, the new approach was "Three All" meaning 'kill all, burn all, and destroy all' in those areas containing Anti-Japanese forces.

Peng was criticized by Mao for revealing the number of the Communist forces to the Kuomintang. Thus, the Hundred Regiments Offensive became the last of the two major Communist frontal engagements against the Japanese during the war. During the Cultural Revolution, Peng's action was one of the pretexts used by the Gang of Four that led to his downfall.


  • The Battle of One Hundred Regiments, from Kataoka, Tetsuya; Resistance and Revolution in China: The Communists and the Second United Front. Berkeley: University of California Press, [1974]. [1]


  1. ^ Chinese-Soviet Relations, 1937–1945; Garver, John W.; pg. 120.
  2. ^ Chinese-Soviet Relations, 1937–1945; Garver, John W.; pg. 120.
  3. ^ Peasant Nationalism and Communist Power: The Emergence of Revolutionary China 1937–1945; Johnson, Chalmers A.; pg. 57.

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