He Zhuguo
After the treat from Shanhaiguan He Zhuguo was ordered to defend Beiping and Tianjin. The Japanese turned to Rehe. Because of the weak resistance of Chinese defenders such as Zhang Zuoxiang, Wan Fulin, and Tang Yulin, the Japanese army occupied Rehe. Zhang Xueliang was forced by Chiang Kai-shek to resign as the Northeastern Army commander, but not before reorganizing the Northeast Army. He Zhuguo was reorganized into the 57th Army, governing the Army 109 Division, 115 Division, 120 Division, Cavalry 3rd Division, Artillery 15th Regiment, etc.