The Chinese Civil War 1945 to 1949, including the strategic balance at 1946, the role of Manchuria, the three decisive campaigns of 1948 to 1949, and the reasons for the Communist victory

What this dot point is asking

NESA expects you to explain the course of the civil war from the renewal of fighting in 1946 to the PLA's victory in 1949. Strong answers integrate strategic phases, the three decisive campaigns, the KMT's structural collapse, and the CCP's political and military advantages.

The answer

The strategic balance at mid-1946

The KMT entered the war with apparent overwhelming advantage:

• Around 4.3 million troops, including 39 US-equipped divisions.
• US Lend-Lease equipment, including aircraft and naval vessels.
• Control of all major cities, all railways, and all industrial centres.
• International recognition as the legitimate Chinese government.

The CCP held:

• Around 1.2 million regulars and 2.6 million militia.
• Base areas covering around 100 million people.
• Japanese arms acquired in Manchuria.
• Soviet covert support, especially in Manchuria.

But raw numbers concealed the KMT's weaknesses: brittle morale, fragile finances, divided high command, and the structural problem that gains in territory cost garrisons.

Phase 1: KMT offensive (mid-1946 to mid-1947)

Chiang launched general offensives across north China. The KMT captured Zhangjiakou (Kalgan, October 1946), then Yan'an itself on 19 March 1947. Mao evacuated the capital but treated the loss strategically: "If the enemy advances, we retreat."

KMT forces took territory but bled men. PLA general Peng Dehuai, defending Shaanxi-Gansu-Ningxia, conducted a mobile defence that exhausted Hu Zongnan's columns. Manchuria saw heavy fighting; Lin Biao retreated and rebuilt.

By mid-1947 the strategic initiative had shifted. Liu Bocheng and Deng Xiaoping led an audacious counter-thrust across the Yellow River into the Dabie Mountains (June-August 1947), operating in the KMT rear in central China. The PLA was no longer simply defending.

Phase 2: PLA counter-offensive (mid-1947 to mid-1948)

The PLA renamed itself the People's Liberation Army (1946 progressively, formally 1947) and shifted to conventional combined-arms warfare. PLA strength reached around 2.8 million by early 1948; KMT strength fell to around 3.6 million.

CCP land reform under the May Fourth Directive (May 1946) and the Outline Land Law (October 1947) brought millions of peasant volunteers into the army. PLA logistics in north China relied on around 5 million civilian porters and labour brigades.

The KMT economy began to collapse. Inflation accelerated: the Fabi exchanged at 25 to the US dollar in 1937, around 7,700 by August 1946, around 12 million by mid-1948. The Gold Yuan reform (19 August 1948) replaced the Fabi at 3 million Fabi to 1 Gold Yuan; within three months the Gold Yuan had lost 90 per cent of its value. Public confidence collapsed.

The Three Decisive Campaigns

Liaoshen Campaign (12 September to 2 November 1948). Lin Biao's Northeast Field Army (around 700,000) faced Wei Lihuang's KMT forces (around 550,000) in Manchuria. The PLA cut KMT garrisons off from each other. Jinzhou fell on 14 October. Changchun surrendered after a six-month siege; perhaps 150,000 civilians died of starvation inside the city. Mukden fell on 1 November 1948. Around 470,000 KMT troops were killed or captured. Manchuria was lost.

Huaihai Campaign (6 November 1948 to 10 January 1949). The largest single campaign of the war. The Eastern China Field Army (Chen Yi) and the Central Plains Field Army (Liu Bocheng, Deng Xiaoping) totalled around 600,000. KMT forces under Du Yuming and Liu Zhi numbered around 800,000, including five elite armies. Civilian labour brigades brought PLA supplies; KMT logistics seized up. The campaign destroyed five KMT armies. Around 555,000 KMT troops were killed, wounded, captured, or defected. The road to Nanjing was open.

Pingjin Campaign (29 November 1948 to 31 January 1949). Lin Biao's Fourth Field Army (around 1 million) plus North China forces surrounded the Beiping-Tianjin region (Fu Zuoyi, around 520,000 KMT). Tianjin fell on 15 January after a brief assault. Fu Zuoyi negotiated the peaceful surrender of Beiping on 31 January 1949. Around 520,000 KMT troops were captured or defected.

In four months, the PLA destroyed around 1.5 million KMT troops, including most of the elite American and German-trained divisions. The mainland war was effectively over.

Crossing the Yangtze and the southern campaigns

Chiang resigned the presidency on 21 January 1949; Li Zongren became acting president. Peace talks at Beiping (April 1949) failed. The PLA crossed the Yangtze on 20-21 April 1949. Nanjing fell 23 April. Hangzhou 3 May. Shanghai 27 May. Wuhan 16 May.

Chen Geng's Second Field Army took the south-west; Lin Biao's Fourth Field Army moved south; Peng Dehuai's First Field Army took the north-west (Xinjiang, September 1949). Major cities fell in sequence: Guangzhou 14 October 1949, Chongqing 30 November 1949, Chengdu 27 December 1949.

By the end of 1949 the PLA controlled all of mainland China except parts of Tibet and the offshore islands. Tibet was occupied in October 1950 (Chamdo); Hainan Island in May 1950.

Reasons for KMT defeat

Strategic. Chiang spread KMT forces too thinly garrisoning cities; the PLA concentrated overwhelming force at chosen points. The German and US-trained divisions, designed for conventional war, were destroyed faster than they could be replaced.

Economic. Hyperinflation destroyed urban living standards and the KMT tax base. The Gold Yuan reform failed.

Political. KMT corruption was endemic; the "Four Big Families" (Chiang, Soong, Kung, Chen) accumulated wealth while soldiers went unpaid. Press censorship and Blue Shirt repression alienated intellectuals and students.

Land question. The KMT never tackled rural inequality. CCP land reform mobilised peasant volunteers and supplied PLA logistics on a scale the KMT could not match.

International. US aid declined sharply after 1947 (the China White Paper of August 1949 effectively conceded defeat). Soviet aid to the CCP, including arms and technical support, continued.

Reasons for CCP victory

Strategic competence. Mao's strategic directives showed sustained discipline. Lin Biao's Manchurian campaign, Chen Yi's Huaihai operations, and Peng Dehuai's Shaanxi defence were all expertly executed.

Mass base. Land reform, base-area governance, and the Mass Line gave the CCP a depth of peasant support the KMT lacked.

Discipline. PLA conduct in captured cities, particularly Beiping and Shanghai, was reported by Western journalists as comparatively disciplined. The contrast with retreating KMT looting helped consolidate urban support.

Organisation. The CCP had emerged from Yan'an as an ideologically united, hierarchically disciplined organisation. The KMT was a coalition of cliques.

Timeline 1946-1949

Historiography

Odd Arne Westad (Decisive Encounters: The Chinese Civil War 1946-1950, 2003) is the standard.

Suzanne Pepper (Civil War in China: The Political Struggle 1945-1949, 1978) is on the political dimension.

Lloyd Eastman (Seeds of Destruction: Nationalist China in War and Revolution 1937-1949, 1984) emphasises KMT structural failure.

Steven Levine (Anvil of Victory, 1987) on Manchuria.

Lionel Chassin (The Communist Conquest of China, 1965) is older but still useful operational history.

Diana Lary (China's Civil War, 2015) on the social experience.

How to read a source on this topic

Sources include PLA campaign maps, KMT communiques, US State Department reporting (the Davies-Service group), Mao's strategic directives, and contemporary news coverage. Three reading habits.

First, separate the campaigns from the political backdrop. Liaoshen, Huaihai, and Pingjin together decided the war militarily; the political collapse was already advanced.

Second, treat KMT corruption claims with care but not scepticism. The Soong-Kung connection to government finances and the "Four Big Families" rhetoric was CCP propaganda, but the underlying inflation and graft were real.

Third, watch the international angle. The Truman administration's August 1949 White Paper effectively conceded defeat; "loss of China" politics in the US shaped the Truman-MacArthur quarrel in 1950-1951.

Common exam traps

Treating the civil war as inevitable from 1946. PLA victory required strategic competence and KMT errors at every stage. The KMT could have done better in Manchuria especially.

Underweighting Manchuria. The Liaoshen campaign destroyed the KMT's modern field army before the war was settled. The Manchurian theatre was decisive.

Treating "land reform won the war" as sufficient. Land reform mobilised peasants, but PLA conventional combined-arms warfare won the campaigns. Mao at Yan'an would not have beaten Chiang's American divisions in 1946 without Japanese arms and intervening developments.

In one sentence

The Chinese Civil War of 1945-1949 turned from an apparent KMT advantage (4.3 million troops, US equipment, all major cities) into PLA victory through superior strategy and land-reform mass mobilisation, with the three decisive campaigns of September 1948 to January 1949 (Liaoshen, Huaihai, Pingjin) destroying around 1.5 million KMT troops, leading to the Yangtze crossing in April 1949 and the conquest of mainland China by the end of the year.