Янь Сишань
On October 14, Chiang Kai-shek sent a telegram to Yan Xishan, advising that he was sending Tang Enbo and the Chinese 13th Army (with 2 divisions) and Men Bingyue's 7th Cavalry Division to reinforce Suiyuan. On October 30, Yan Xishan and Fu Zuoyi met with Chiang Kai-shek, to assess the military situation and determine troop dispositions. On November 11, Yan Xishan divided his forces into three Route Armies, a Cavalry Army and a Reserve Army, with troop dispositions to be completed as soon as Tang Enbo's forces arrived. However, the Japanese struck first on November 15, 1936.