从1936年5月下旬至7月下旬,由红一方面军主力组成的西方野战军,在司令员兼政治委员彭德怀的指挥下,按照党中央和中央军委的周密部署,进行了西征战役,对坚持反共的宁夏军阀马鸿逵、马鸿宾部予以重击,占领了环县、定边、盐池、豫旺等4座县城,开辟了纵横各400里的陕甘宁新根据地。 From late May 1936 to late July, under the command of commander and political commissar Peng Dehuai, the western field army composed of the main force of the Red Army carried out the Western Campaign in accordance with the thorough deployment of the CPC Central Committee and the Central Military Commission. The anti-communist Ningxia warlords Ma Hongtao and Ma Hongbin stormed the area and took over 4 county towns including Huanxian, Dingbian, Yanchi and Yuwang, opening up a new base of Shaanxi, Gansu and Ningxia for each of the 400 vertical and horizontal lines.