Hundred Regiments Offensive

Hundred Regiments Offensive. It was a major campaign launched by the Chinese Communist Party's primary military force, the Eighth Route Army, against the Imperial Japanese Army in northern China during the Second Sino-Japanese War. Orchestrated by commander Peng Dehuai, the large-scale operation aimed to disrupt Japanese logistical networks and bolster Chinese morale. The offensive marked the largest coordinated attack by communist forces during the war and had profound political and military repercussions for the subsequent conflict.

Background

By mid-1940, the Imperial Japanese Army had consolidated its control over major cities and railways in North China following the capture of key urban centers like Taiyuan and the establishment of the Wang Jingwei regime. The Japanese implemented a strategy of "burn all, kill all, loot all" to pacify the countryside, while constructing a dense network of blockhouses, trenches, and roads, notably the Zhengding–Taiyuan railway, to fragment resistance bases. The Eighth Route Army, operating from rural bases such as the Shanxi-Chahar-Hebei Border Region and the Jin-Cha-Ji Military Region, faced increasing pressure from these containment tactics. Concurrently, tensions were rising between communist forces and the National Revolutionary Army under Chiang Kai-shek, necessitating a demonstration of the communists' commitment to the national war effort against the Empire of Japan.

Planning and objectives

Strategic planning was led by Peng Dehuai, with critical operational input from Zuo Quan of the Eighth Route Army headquarters and front commanders like Liu Bocheng and Nie Rongzhen. The primary military objective was to cripple Japanese economic and transportation infrastructure in North China, specifically targeting the Beijing–Hankou railway, Tongpu railway, and critical coal mines in Jingxing County. Politically, the offensive aimed to shatter the perception of Japanese invincibility, rally popular support for the Chinese Communist Party, and assert its role as a leading force in the Second Sino-Japanese War. The operation was planned in utmost secrecy, with even senior leaders like Mao Zedong reportedly not fully briefed on its scale until after its commencement.

Order of battle

The offensive mobilized a vast force nominally comprising 105 regiments from the Eighth Route Army and local militia, though the core fighting strength was around 400,000 troops. Major commands included the 129th Division under Liu Bocheng and Deng Xiaoping, operating in the Taihang Mountains; the 120th Division commanded by He Long in northwestern Shanxi; and the Shanxi-Chahar-Hebei Military Region led by Nie Rongzhen. These forces were arrayed against elements of the Japanese North China Area Army, including the First Army and Twelfth Army, supported by numerous units of the Collaborationist Chinese Army. The Japanese garrison forces were dispersed across hundreds of strongpoints along the Beijing–Wuhan railway and other key lines.

The offensive

The offensive commenced on the night of 20 August 1940, with coordinated attacks across five provinces. The first phase focused on widespread sabotage, with troops destroying hundreds of kilometers of railway track, bridges on the Yellow River, and tunnels along the Zhengding–Taiyuan railway. Key battles included the assault on the Niangzi Pass and the capture of the coal mining center at Jingxing County. A second phase, beginning in September, shifted to attacking Japanese fortified strongholds that isolated communist base areas, such as those in Liaoxian County. The final phase, from early October onward, became a defensive struggle against massive Japanese counter-offensives, known as the "Three Alls Campaign," which sought to eradicate base areas through brutal reprisals in regions like the Taiyue Military District.

Aftermath and significance

Militarily, the offensive inflicted significant damage on Japanese logistics, destroying railways, mines, and bridges, and demonstrated the growing strength of communist guerrilla forces. However, it provoked a devastating and sustained retaliation from the Imperial Japanese Army, leading to severe losses for the Eighth Route Army and civilian populations in base areas. Politically, it heightened tensions with the Kuomintang, which viewed the communist expansion with suspicion, foreshadowing the later Chinese Civil War. Within the Chinese Communist Party, the campaign led to internal criticism of Peng Dehuai for exposing forces prematurely, though it was later celebrated as a symbol of resistance. The offensive solidified the reputation of the People's Liberation Army as a national fighting force and remains a central event in the historiography of the Second Sino-Japanese War.

Category:Battles of the Second Sino-Japanese War Category:1940 in China