1932 10 In order to strengthen the construction of the western wing of the Hunan-Jiangxi base area and the central revolutionary base area, the Central Military Commission appointed Cai Huiwen as commander-in-chief and political commissar of the Hunan-Jiangxi Military Region and political commissar of the Red Eighth Army. Hunan-Jiangxi revolutionary base area is developed on the basis of Jinggangshan revolutionary base area with Ninggang as the center in the middle section of Luo Xiao Mountain on the Hunan-Jiangxi border. It faces the Central Soviet Area across the Ganjiang River in the east, and the Hunan-Hubei-Jiangxi Soviet Area across the Yuan and Xiushui River in the north.

In order to strengthen the army building, Cai Huiwen reorganized and expanded his army in Tianhe, Ji 'an in June, 5438+0932+0/kloc-0, and expanded local armed forces. The armed forces in the Hunan-Jiangxi Soviet area rapidly expanded to13,700 people and more than 6,400 guns. He attached great importance to the regularization of the army, often used the gap between battles to personally train people above the deputy company commander of the whole army and above the squad leader of each division, and sent experienced, loyal and brave comrades to study in Hunan, Jiangxi, Hongsi Banner Branch and other places.

After training and consolidation, the tactical level of the troops has been improved, cadres have begun to look at operational regulations, and military technology has been improved day by day. In 1944, Ren commented that Cai Huiwen "played a positive role in some aspects of military education and standardization".