The Opening Campaign was the second phase of the

Chinese Civil War The Chinese Civil War was fought between the Kuomintang-led government of the Republic of China and forces of the Chinese Communist Party, continuing intermittently since 1 August 1927 until 7 December 1949 with a Communist victory on m ...

, beginning at the end of

World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...

with the

surrender of Japan The surrender of the Empire of Japan in World War II was announced by Emperor Hirohito on 15 August and formally signed on 2 September 1945, bringing the war's hostilities to a close. By the end of July 1945, the Imperial Japanese Navy ...

. After the war ended, the

Second United Front The Second United Front ( zh, t=第二次國共合作 , s=第二次国共合作 , first=t ) was the alliance between the ruling Kuomintang (KMT) and the Chinese Communist Party (CCP) to resist the Japanese invasion of China during the Seco ...

had no more meaning, and it disbanded. The generals of the nationalist and communist causes scrapped for territory, beginning the second chapter of the bloody conflict.

Campaign

Japan's defeat at the end of the

Pacific War The Pacific War, sometimes called the Asia–Pacific War, was the theater of World War II that was fought in Asia, the Pacific Ocean, the Indian Ocean, and Oceania. It was geographically the largest theater of the war, including the vast ...

left a

power vacuum In political science and political history, the term power vacuum, also known as a power void, is an analogy between a physical vacuum to the political condition "when someone in a place of power, has lost control of something and no one has repla ...

across large parts of

China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...

, as the

Kuomintang The Kuomintang (KMT), also referred to as the Guomindang (GMD), the Nationalist Party of China (NPC) or the Chinese Nationalist Party (CNP), is a major political party in the Republic of China, initially on the Chinese mainland and in Tai ...

under

Chiang Kai-shek Chiang Kai-shek (31 October 1887 – 5 April 1975), also known as Chiang Chung-cheng and Jiang Jieshi, was a Chinese Nationalist politician, revolutionary, and military leader who served as the leader of the Republic of China (ROC) from 1928 ...

and the

Chinese Communist Party The Chinese Communist Party (CCP), officially the Communist Party of China (CPC), is the founding and One-party state, sole ruling party of the China, People's Republic of China (PRC). Under the leadership of Mao Zedong, the CCP emerged victoriou ...

under

Mao Zedong Mao Zedong pronounced ; also romanised traditionally as Mao Tse-tung. (26 December 1893 – 9 September 1976), also known as Chairman Mao, was a Chinese communist revolutionary who was the founder of the People's Republic of China (PRC) ...

began to take over territories that were recently conquered by Japan. The end of World War II brought an end to the Japanese control over China and their puppet the

Reorganized National Government of China The Wang Jingwei regime or the Wang Ching-wei regime is the common name of the Reorganized National Government of the Republic of China ( zh , t = 中華民國國民政府 , p = Zhōnghuá Mínguó Guómín Zhèngfǔ ), the government of the pup ...

's over

Nanjing Nanjing (; , Mandarin pronunciation: ), alternately romanized as Nanking, is the capital of Jiangsu province of the People's Republic of China. It is a sub-provincial city, a megacity, and the second largest city in the East China region. T ...

, but sporadic fighting between the Japanese and both Chinese political groups continued for a while. At the

Battle of Tianmen The Battle of Tianmen (天门战斗) was a battle between the nationalists and the communists immediately after World War II during the Chinese Civil War in Tianmen, Hubei, China and resulted in communist victory. Prelude Like similar clashes ...

on August 17, the communists destroyed a contingent of Japanese soldiers and Nationalist troops previously subservient to the rule of the Japanese occupiers. Some Japanese and many of the members of their puppet regimes actually joined the Nationalist

Army, hoping to fight the Chinese Communists that, during the war, refused to make truces with the Japanese, while Chiang Kai-shek did so. But pretty soon, Nationalist forces moved in to capture the coastal cities of China, such as the cities of

Shanghai Shanghai (; , , Standard Mandarin pronunciation: ) is one of the four direct-administered municipalities of the People's Republic of China (PRC). The city is located on the southern estuary of the Yangtze River, with the Huangpu River flow ...

and

Guangzhou Guangzhou (, ; ; or ; ), also known as Canton () and alternatively romanized as Kwongchow or Kwangchow, is the capital and largest city of Guangdong province in southern China. Located on the Pearl River about north-northwest of Hong Kon ...

, while the communists managed to take

Northeast China Northeast China or Northeastern China () is a geographical region of China, which is often referred to as "Manchuria" or "Inner Manchuria" by surrounding countries and the West. It usually corresponds specifically to the three provinces east of t ...

, which occupying Japanese forces previously organized under the puppet state of

Manchukuo Manchukuo, officially the State of Manchuria prior to 1934 and the Empire of (Great) Manchuria after 1934, was a puppet state of the Empire of Japan in Northeast China, Manchuria from 1932 until 1945. It was founded as a republic in 1932 afte ...

. As relations between the two opposing factions broke down, the Nationalist forces began to fight the communists and slowly push them northwards. Mao and his supporters lost over 45 percent of their fighting force in a few months, in between the Yetaishan Campaign and the beginning of the year of 1946, when the war began to become more serious. By then, the communists were pinned down in the northeast and the Nationalists controlled most of China.

References

* Saul, David: ''War: From Ancient Egypt to Iraq'', p. 478, Dorling Kindersley, {{ISBN, 978-0-7566-5572-3 Conflicts in 1945 Conflicts in 1946 Military operations of the Chinese Civil War