, June 16, 1924. On the podium, from left to right:
Liao Zhongkai,
Chiang Kai-shek,
Sun Yat-sen and
Soong Ching-ling. Below the podium, the first one from the left in white suite is
Two-Gun Cohen.
Shanghai against
Sun Chuanfang's forces. during the
Northern Expedition. On 1 September 1917, the
Kuomintang, under the leadership of
Sun Yat-sen, established the
Constitutional Protection Junta in opposition to the
Beiyang government, following the launch of the
Constitutional Protection Movement on 17 July 1917. The National Revolutionary Army (NRA) was officially formed in 1924 by the Kuomintang as its military arm, based on pro-Nationalist regional forces and supported by foreign assistance. Its primary mission was to reunify China, beginning with the
Northern Expedition. With organisational support from the
Comintern and ideological guidance from Sun Yat-sen's
Three Principles of the People, the NRA developed as an extension of the party-state system, where the separation between political party, military, and government remained blurred. Many of the NRA's officer corps were graduates of the newly established
Whampoa Military Academy, including its first commandant,
Chiang Kai-shek. Chiang rose to become commander-in-chief in 1925 and subsequently led the NRA during the Northern Expedition. The successful conclusion of the Northern Expedition in 1928 is widely considered to mark the end of the
Warlord Era in China, although localised warlord activity continued in some regions for years afterwards. Prominent generals who later rose to distinction within the NRA included
Tu Yü-ming and
Chen Cheng. In 1927, after the collapse of the
First United Front between the Kuomintang and the
Chinese Communist Party, the KMT leadership carried out a purge of its leftist members and significantly reduced Soviet influence within the party. Following this realignment, Chiang Kai-shek turned to
Germany—then governed by the
Weimar Republic—for assistance in reorganising and modernising the NRA. Despite restrictions imposed by the
Treaty of Versailles, which barred German military advisers from officially serving in combat roles abroad, the Weimar Republic did dispatch advisors to China. Chiang initially sought assistance from high-profile generals such as
Erich Ludendorff and
August von Mackensen, but these requests were declined. German authorities feared that the involvement of such well-known figures would provoke backlash from the Allies and diminish national prestige, especially if they were seen acting in the capacity of
mercenaries.
Northern Expedition (1926–1928) The Northern Expedition was a military campaign launched by the National Revolutionary Army (NRA) in July 1926, with the goal of defeating the warlords of the
Beiyang government and unifying China under
Nationalist control. The expedition was led by Generalissimo
Chiang Kai-shek, who had risen to prominence after heading the
Whampoa Military Academy. Initially supported by a
united front with the
Chinese Communist Party and Soviet advisers such as
Mikhail Borodin and
Vasily Blyukher, the NRA advanced northward from
Canton, quickly defeating the
Zhili and Hunan warlords, including
Wu Peifu and
Sun Chuanfang. However, internal divisions within the KMT soon emerged. In April 1927, Chiang ordered a purge of Communists in Shanghai—an event known as the
Shanghai Massacre—which marked the collapse of the
First United Front and a formal split between left- and right-wing factions of the party. Chiang temporarily stepped down, but resumed leadership in early 1928 and relaunched the campaign's second phase. By mid-1928, the NRA—reinforced by allied warlords including
Yan Xishan and
Feng Yuxiang—defeated the
Beiyang Army and approached
Beijing. As their forces closed in, the Manchurian warlord
Zhang Zuolin was assassinated in the Huanggutun incident by the Japanese
Kwantung Army, and his son
Zhang Xueliang soon declared allegiance to the
Nanjing government. The campaign ended in December 1928, when the Northeast officially
accepted Nationalist rule, effectively unifying China under the Nationalist regime and marking the beginning of the Nanjing Decade. Despite the nominal success, true centralisation remained elusive. Many former warlords retained regional power and autonomy, sowing the seeds for future internal conflict.
Nanjing Decade Immediately following the conclusion of the
Northern Expedition, the National Revolutionary Army (NRA) was significantly overextended and required downsizing and demobilisation.
Chiang Kai-shek famously remarked that "soldiers are like water—capable of both carrying the state and sinking it." Official troop figures at the time listed 1,502,000 soldiers under arms, though only 224,000 of these were directly under Chiang's control. In reality, Chiang later admitted to controlling over 500,000 troops, while
Feng Yuxiang, whose official number was 269,000, likely commanded closer to 600,000. Thus, the total NRA strength was probably nearer to two million men. During the course of the expedition, the
Chinese Nationalist Party (KMT) also established regional branch political councils. Though these councils were theoretically subordinate to the central political authority in
Nanjing, in practice they operated autonomously and maintained their own military forces.
Feng Yuxiang controlled the Kaifeng council,
Yan Xishan oversaw the Taiyuan council, and the
Guangxi clique controlled two separate councils in
Wuhan and
Beijing, led by
Li Zongren and
Bai Chongxi, respectively.
Li Jishen, another Guangxi-aligned figure, loosely oversaw the council in Canton, while a sixth council was under
Zhang Xueliang in
Shenyang. Confronted with the dilemma of how to manage these competing power centres, Chiang had two strategic options: to centralise authority gradually or to act swiftly and decisively. True to the spirit of the expedition's aim to eliminate warlordism and regionalism, he chose immediate centralisation. Using the pretext of demobilisation, Chiang began systematically reducing the military power of regional commanders while expanding and consolidating his own authority.
Central Plains War (1929–1930) Phase 1: Regional Clashes and Political Purges In February 1929, tensions escalated when the
Guangxi clique dismissed
Lu Diping, the governor of Hunan, who subsequently defected to Chiang Kai-shek. The Guangxi forces invaded Hunan in retaliation. However, Chiang countered by bribing military units in Wuchang to defect, decisively routing the Guangxi army within two months. By March, the Kuomintang expelled key Guangxi leaders—
Bai Chongxi,
Li Jishen, and
Li Zongren—and promoted their subordinates who supported Chiang, thereby sowing internal division within the clique. In May,
Feng Yuxiang also entered the conflict, and he too was expelled from the party. Once again, Chiang used financial incentives to sway Feng's subordinates, including
Han Fuju and
Shi Yousan, to defect. Feng's armies were defeated, and he retreated to
Shanxi, announcing his retirement from politics. By July, Chiang's forces had occupied
Luoyang. Buoyed by his victories, Chiang pushed forward with a nationwide demobilisation plan and announced that the army would be reduced to 65 divisions by March 1930. This move alarmed the regional leaders, as Chiang had already stripped revenue sources from
Yan Xishan, leading him to join forces with Feng and the Guangxi clique.
Phase 2: Full-Scale War and Centralisation The anti-Chiang coalition amassed approximately 700,000 troops, while Chiang commanded around 300,000. The coalition planned to seize Shandong and contain Chiang south of the Longhai and Beijing–Wuhan railways. They aimed to advance along the railway lines, capturing
Xuzhou and
Wuhan, while southern forces moved north to establish a link-up. The war involved more than one million soldiers, with roughly 300,000 casualties. Despite being outnumbered, Chiang's southern forces performed well, routing the Guangxi-aligned armies by July. However, his northern units suffered defeats, and Chiang narrowly escaped capture in June. The northern advance halted only after the southern forces were crushed. Chiang used the ensuing lull to regroup and launch counteroffensives along key railway lines. With fighting in
Bengbu subsiding by September, Chiang began closing in again on Loyang. These developments, combined with strategic bribery, convinced
Zhang Xueliang to side with Chiang, bringing the war to an end.
Encirclement Campaigns (1929–1934) Following the conclusion of the Northern Expedition and the unification of China under the Nationalist government,
Chiang Kai-shek turned his attention to eliminating the growing Communist presence in rural China. From 1929 to 1934, the Nationalist government launched a series of large-scale military operations, known as the encirclement campaigns, to crush Communist-controlled revolutionary base areas, most notably the
Jiangxi Soviet and
Eyuwan Soviet. The first wave of campaigns began as regional offensives targeting smaller Soviets, such as those in
Honghu, Hunan–Jiangxi, and Hubei–Henan–Shaanxi. Early attempts were poorly coordinated and often relied on local warlord forces, resulting in repeated defeats by the more mobile and experienced Chinese Red Army. In Honghu, Communist commanders such as
He Long and
Duan Dechang successfully repelled multiple assaults in 1930 and 1931 despite being heavily outnumbered. The climax came with five major campaigns against the Jiangxi Soviet from 1930 to 1934. The first four were defeated by the Red Army under
Mao Zedong and
Zhu De using guerrilla warfare and mobile tactics. However, the fifth campaign, launched in 1933 under the guidance of German military advisors such as
Hans von Seeckt and
Alexander von Falkenhausen, introduced blockhouse strategies and scorched-earth tactics. With overwhelming numbers and fortified positions, the Nationalists eventually broke through, forcing the Communists to abandon their base in October 1934 and begin the
Long March. The
Eyuwan Soviet also endured five campaigns between 1930 and 1934. Though the Communists held out during the first three, they were eventually pushed out by Nationalist forces employing brutal scorched-earth tactics in the fourth and fifth offensives. Despite these setbacks, small Red Army remnants like the 25th Army under
Xu Haidong continued guerrilla resistance and later linked up with main Communist forces during the Long March. Though the Nationalists ultimately succeeded in dismantling the
Soviet base areas by 1934, their victories were temporary. The campaigns demonstrated both the vulnerability and resilience of Communist forces, who would return stronger in the following years.
Second Sino-Japanese War depicting the National Revolutionary Army. The
Second Sino-Japanese War (1937–1945) marked the most significant military engagement of the National Revolutionary Army (NRA), which fought the invading forces of the
Empire of Japan across vast regions of
China. Under the leadership of Generalissimo
Chiang Kai-shek, the NRA bore the brunt of China's resistance, particularly during the early years when the
Communist forces were still comparatively minor. The war began in earnest after the
Marco Polo Bridge Incident near
Beiping in July 1937, which led to a full-scale Japanese invasion of northern China. Despite poor equipment and internal fragmentation, the NRA mounted tenacious resistance in major battles such as the
Battle of Shanghai, the
Battle of Nanking, and the
Battle of Taierzhuang. At Shanghai, elite NRA units, including German-trained divisions, engaged in months-long street fighting, attempting to impress foreign powers and gain diplomatic support. The defence of
Nanjing was ultimately overwhelmed, resulting in the
Nanjing Massacre, where Japanese troops committed extensive atrocities. After the fall of Nanking, the NRA re-established its headquarters in
Chongqing, which served as the wartime capital until 1945. While conventional engagements became increasingly difficult due to Japanese air superiority and mechanised mobility, the NRA retained control over much of western and interior China. It secured some critical victories, notably at Taierzhuang in 1938 and in defending
Changsha during multiple Japanese offensives. Women also contributed to the war effort through formal units such as the
Guangxi Women's Battalion, encouraged by
Soong Mei-ling, Chiang's wife. Despite internal political challenges, the NRA integrated multiple regional forces and provincial warlord armies into its ranks. As Japanese occupation expanded across coastal China, guerrilla and irregular operations were increasingly important in contested regions. However, logistical weaknesses, inadequate modern arms, and a fragmented command structure hampered sustained offensives. The lack of centralised discipline also led to issues such as corruption, press-ganging of rural populations, and logistical failure. From 1938 onward, foreign aid helped improve NRA capability. Initially, the
Soviet Union supported the NRA with matériel, training, and volunteer aviators under the
Sino-Soviet Non-Aggression Pact. From 1941, the
United States became the chief backer of the NRA via
Lend-Lease, although this support was complicated by strained relationships between General Chiang and American commanders, particularly General
Joseph Stilwell. While Stilwell was appointed as Chief of Staff to Chiang and oversaw training efforts for modernised NRA units (known as the "X Force"), he clashed frequently with Chinese leadership over strategy and control. The US government threatened to cut off aid to China unless they handed over command of all Chinese forces to the US. Chiang stalled on fulfilling the American demand as he claimed that that would be make him no different from the Japanese puppet authorities. By the end of the war, US influence over the military affairs of China were greater than any foreign power in the last century, with American personnel appointed in every field, such as the Chief of Staff of the Chinese military, management of the Chinese War Production Board and Board of Transport. Sir George Sansom, British envoy to the US, reported that many US military officers saw US monopoly on Far Eastern trade as a rightful reward for fighting the Pacific war, a sentiment echoed by US elected officials. During the
Burma Campaign, NRA troops formed the core of the
Chinese Expeditionary Force () in India and northern Burma. Under the command of General
Sun Li-jen, these forces succeeded in recapturing key territory and securing the
Ledo Road, a vital supply line into China. Plans were underway for an American-assisted push to retake Canton and advance on
Shanghai before the Japanese surrender rendered these operations moot. Throughout the conflict, the NRA suffered enormous losses, including an estimated 750,000 combat casualties. ==Structure==