A report on Second Sino-Japanese War and Chiang Kai-shek

Japan invaded China in 1937, starting the Second Sino-Japanese War and temporarily halting the civil war between the Chinese Communist Party (CCP) and the Kuomintang (KMT).

In the late 1920s, the Kuomintang under Chiang Kai-shek, the then Principal of the Republic of China Military Academy, was able to reunify the country under its own control with a series of deft military and political maneuverings, known collectively as the Northern Expedition.

After Sun's death in 1925 Wang engaged in a political struggle with Chiang Kai-shek for control over the Kuomintang, but lost.

Wang remained inside the Kuomintang, but continued to have disagreements with Chiang until the outbreak of the Second Sino-Japanese War in 1937, after which he accepted an invitation from the Japanese Empire to form a Japanese-supported collaborationist government in Nanking.

The PLA can trace its origins during the republican era to the left-wing units of the National Revolutionary Army (NRA) of the Kuomintang (KMT) when they broke away on 1 August 1927 in an uprising against the nationalist government as the Chinese Red Army before being reintegrated into the NRA as units of New Fourth Army and Eighth Route Army during the Second Sino-Japanese War.

The CCP founded their military wing on 1 August 1927 during the Nanchang uprising when Communist elements of the National Revolutionary Army rebelled under the leadership of Zhu De, He Long, Ye Jianying and Zhou Enlai and other leftist elements of the Kuomintang after the Shanghai massacre of 1927 by Chiang Kai-shek.

The Warlord Era ended in 1928 when the Kuomintang under Chiang Kai-shek officially unified China through the Northern Expedition, marking the beginning of the Nanjing decade.

Several of the warlords continued to maintain their influence through the 1930s and the 1940s, which was problematic for the Nationalist government during both the Second Sino-Japanese War and Chinese Civil War.

Originally organized with Soviet aid as a means for the KMT to unify China during the Warlord Era, the National Revolutionary Army fought major engagements in the Northern Expedition against the Chinese Beiyang Army warlords, in the Second Sino-Japanese War (1937–1945) against the Imperial Japanese Army and in the Chinese Civil War against the People's Liberation Army.

A large number of the Army's officers passed through the Whampoa Military Academy, and the first commandant, Chiang Kai-shek, became commander-in-chief of the Army in 1925 before launching the successful Northern Expedition.

It was geographically the largest theater of the war, including the vast Pacific Ocean theater, the South West Pacific theater, the Second Sino-Japanese War, and the Soviet–Japanese War.

However, its policies of brutality toward the Chinese population, of not yielding any real power to these regimes, and of supporting several rival governments failed to make any of them a viable alternative to the Nationalist government led by Chiang Kai-shek.

The split was partially motivated by the purge of the Communists within the party, which marked the end of the First United Front, and Chiang Kai-shek briefly stepped down as the commander of the National Revolutionary Army.

During the Second Sino-Japanese War and following the fall of Nanking in December 1937, Wuhan had become the provisional capital of China's Kuomintang government, and became another focal point of pitched air battles beginning in early 1938 between modern monoplane bomber and fighter aircraft of the Imperial Japanese forces and the Chinese Air Force, which included support from the Soviet Volunteer Group in both planes and personnel, as U.S. support in war materials waned.As the battle raged on through 1938, Wuhan and the surrounding region had become the site of the Battle of Wuhan.

The region that it would administer was initially seized by Japan throughout the late 1930s with the beginning of the Second Sino-Japanese War.

Wang, a rival of Chiang Kai-shek and member of the pro-peace faction of the KMT, defected to the Japanese side and formed a collaborationist government in occupied Nanking (Nanjing) (the traditional capital of China) in 1940.

The Central Plains War was a series of military campaigns in 1929 and 1930 that constituted a Chinese civil war between the Nationalist Kuomintang government in Nanjing led by Generalissimo Chiang Kai-shek and several regional military commanders and warlords that were former allies of Chiang.

While Chiang emerged from the war having consolidated his power as the supreme leader and established himself as a "accomplished military commander", the regional factions in the Kuomintang and their rivalries remained unsolved, which led to various problems later in the Second Sino-Japanese War and the Chinese Civil War.

It served as its wartime capital during the Second Sino-Japanese War (1937–1945).

During and after the Second Sino-Japanese War, from Nov 1937 to May 1946, it was Generalissimo Chiang Kai-shek's provisional capital.