閻錫山
Yan Xishan gathered all available Chinese troops under his command to make a stand at Xinkou, because this location is flanked by Wutaishan and Yunzhonshan, which is favorable for the defenders and is also a gateway to Taiyuan, the capital of Shanxi. On October 1, Japanese central command ordered Itagaki Seishiro to lead the Fifth Division and Chahar Expeditionary Force for the final assault on Taiyuan.