New Fourth Army

New Fourth Army
Unit name	New Fourth Army
Dates	1937–1947
Country	Republic of China (1912–1949)
Allegiance	Chinese Communist Party
Branch	People's Liberation Army
Type	Guerrilla force
Size	100,000+ (peak)
Garrison	Jiangsu, Anhui
Notable commanders	Chen Yi, Liu Shaoqi, Ye Ting

New Fourth Army was a Chinese Communist military formation active during the Second Sino-Japanese War and the Chinese Civil War. Formed in 1937 under the terms of the Second United Front, it operated primarily in eastern China, conducting guerrilla warfare, conventional engagements, and political mobilization across Jiangsu, Anhui, Zhejiang, and Jiangxi. The formation played a key role in linking Communist guerrilla bases with urban uprisings and rural reconstruction, affecting subsequent developments in the People's Liberation Army and the Chinese Communist Party's rise to power.

History

The unit emerged after negotiations between the Chinese Communist Party and the Kuomintang that produced the Second United Front against the Empire of Japan. Initially coordinated with units such as the Eighth Route Army and remnants of earlier Communist formations, it consolidated guerrilla bands and irregular troops in eastern provinces. During the New Fourth Army Incident of 1941 tensions with the National Revolutionary Army culminated in a major clash, which reshaped Communist-Kuomintang relations and influenced later strategies by leaders including Mao Zedong, Zhou Enlai, and Zhu De. After the surrender of Japan in 1945 the unit was restructured amid the resumed Chinese Civil War fights against Kuomintang forces led by commanders like Chiang Kai-shek and the army participated in campaigns that merged into the emerging People's Liberation Army order.

Organization and Structure

At formation the army was organized into several divisions and brigades modeled on earlier revolutionary columns such as the Red Army (China) formations from the Long March era. Command structures incorporated political commissars and party committees reflecting Communist Party military doctrine promoted by figures like Liu Shaoqi and Zhou Enlai. Regional military districts coordinated with local soviets and mass organizations drawn from the Rural Reconstruction Movement and trade unions. Liaison with the Eighth Route Army and coordination with guerrilla detachments enabled combined operations across riverine and coastal zones including the Yangtze River and Huai River basins.

Major Campaigns and Battles

The formation engaged in prolonged guerrilla warfare against Imperial Japanese Army garrisons, sabotage operations targeting supply lines connected to the Greater East Asia Co-Prosperity Sphere, and ambushes near nodes such as Xuzhou, Nanjing, and Wuhu. The New Fourth Army Incident was a defining confrontation with the National Revolutionary Army that resulted in major casualties and territorial shifts. Post-1945, elements fought in campaigns influencing control of eastern China, including clashes during the Huaihai Campaign theater and operations contesting access to port cities like Shanghai and river ports on the Yangtze River with Nationalist armies under commanders such as Du Yuming and Tang Enbo.

Leadership and Personnel

Commanders who led and shaped the formation included Ye Ting, who provided early military leadership, Chen Yi, who later became a prominent marshal and political leader, and cadres such as Liu Shaoqi who integrated political-ideological work with military operations. Political commissars and staff officers included future People's Republic of China officials who later occupied roles within the Central Military Commission and provincial administrations. Troop composition combined veteran cadres from the Chinese Workers' and Peasants' Red Army with local militia recruits, student volunteers from institutions in Nanjing and Hangzhou, and returnees from urban underground networks linked to figures like Deng Xiaoping and Zhou Enlai.

Equipment and Logistics

Arms and materiel were procured via battlefield captures from the Imperial Japanese Army and the National Revolutionary Army, clandestine transfers from sympathetic units, and improvised production in rear bases modeled on workshops used by Eighth Route Army detachments. Logistics relied on rural supply chains, requisitioning coordinated by party cadres, and intelligence from underground networks operating in urban centers such as Shanghai and Nanjing. Mobility tactics employed small arms, heavy machine guns, mortars, and captured artillery pieces; riverine operations utilized commandeered junks and small steamers on waterways including the Yangtze River to sustain dispersed forces.

Legacy and Influence

The formation's legacy endures through its contribution to the organizational templates of the People's Liberation Army and the politico-military integration that characterized People's Republic of China forces after 1949. Its campaigns informed Communist doctrines on guerrilla-conventional transition later studied by revolutionary movements and military theorists worldwide, influencing analyses comparing the Vietnam People's Army and other insurgent forces. Prominent veterans occupied leadership roles in provincial governments and national institutions such as the Central Military Commission and the Ministry of National Defense (People's Republic of China), shaping postwar reconstruction, land reform, and military modernization. The historical memory of the formation remains contested in historiography involving Kuomintang narratives, wartime archives, and scholarly works on the Second Sino-Japanese War and the Chinese Civil War.

Category:Military units and formations of the Republic of China (1912–1949) Category:Chinese Communist military units