Editing Long March (section)

===Chiang's Encirclement Campaigns===
{{main|Encirclement Campaigns}}

In early 1933, Bo Gu arrived in Jiangxi with the German Comintern adviser [[Otto Braun (communist)|Otto Braun]] and took control of Party affairs. Zhou at this time, apparently with strong support from Party and military colleagues, reorganized and standardized the Red Army. Under Zhou, Bo, and Braun, the Red Army defeated four attacks by Chiang Kai-shek's Nationalist troops.<ref>Wilson 51</ref>

Chiang's fifth campaign was much more difficult to contain. In September 1933, the [[National Revolutionary Army]] under [[Chiang Kai-shek]] eventually [[Fifth Encirclement Campaign against Jiangxi Soviet|completely encircled]] Jiangxi, with the advice and tactical assistance of his German adviser, [[Hans von Seeckt]].<ref>Vercamer, Arvo.  [https://www.feldgrau.com/ww2-german-military-mission-china/ The German Military Mission to China: 1927–1938]. (Retrieved November 23, 2006)</ref> A fortified perimeter was established by Chiang's forces, and Jiangxi was besieged in an attempt to destroy the Communist forces trapped within. In July 1934, the leaders of the Party, dominated by the "[[28 Bolsheviks|Twenty-Eight Bolsheviks]]", a militant group formed in Moscow by [[Wang Ming]] and Bo Gu, forced Mao from the [[Politburo of the Chinese Communist Party|Politburo of the CCP]] in Ruijin and placed him briefly under house arrest. Mao was replaced by Zhou Enlai as leader of the military commission.<ref>{{cite book | last = Kampen | first = Thomas | year = 2000 | title = Mao Zedong, Zhou Enlai and the Evolution of the Chinese Communist Leadership | publisher = Nordic Institute of Asian Studies | pages = 58–61  | isbn = 87-87062-76-3}}</ref>

Chiang's strategy of slowly constructing a series of interlinking blockhouses (resembling medieval castles) was successful, and Chiang's army was able to capture several major Communist strongholds within months.  Between January and March 1934, the Nationalists advanced slowly.  Bo and Braun continued to employ orthodox military tactics, resulting in a series of Kuomintang advances and heavy Communist casualties.  In October 1934 KMT troops won a decisive battle and drove deep into the heart of the Central Soviet Area.  When Ruijin became exposed to KMT attack, Party leaders faced the choice of either remaining and perishing or of abandoning the base area and attempting to break through the enemy encirclement.{{sfn|Barnouin|Yu|2006|pp=56-57}}

In August 1934, with the Red Army depleted by the prolonged conflict, a spy, [[Mo Xiong]], who had been placed by Zhou Enlai in the KMT army headquarters in Nanchang, brought news that Chiang Kai-shek was preparing a major offensive against the Communist capital, Ruijin. The Communist leadership decided on a strategic retreat to regroup with other Communist units, and to avoid annihilation. The original plan was to link up with the Second Red Army commanded by He Long, thought to be in [[Hubei]] to the west and north. Communications between divided groups of the Red Army had been disrupted by the Kuomintang campaign. During the planning to evacuate Jiangxi, the First Red Army was unaware that these other Communist forces were also retreating westward.