After the Xi Incident, Zhang Xueliang was placed under house arrest by Chiang Kai-shek, and the Northeast Army was downsized and moved to Henan, Anhui and Jiangsu.

After the Lugouqiao Incident broke out, the Northeast Army and the ministries of the national army quickly rushed to various anti-Japanese battlefields, among which the 49 th Army, the 57 th Army and the 67 th Army fought bloody battles in the Battle of Songhu and the Battle of Nanjing, and suffered heavy sacrifices. The 51st Army participated in the great campaign to defend Huaihe River and Xuzhou (including Taierzhuang Campaign), and then advanced into southern Shandong with the 57th Army. Fifty armies moved to Hebei, Henan, Hubei and Hunan, and then entered Myanmar and Vietnam to resist Japan. In the fierce battle, Wu Keren, Zhu Hongxun, Wu Tonggang, Liu Guiwu, Fang Shuhong, Huang Dexing, Liu Qiwen, Hu Xianmei and other generals and countless officers and men, including many * * * members, gave their lives for their country and died heroically. After Zhang Xueliang was detained, the Northeast Army suffered great losses and was divided and disintegrated under Chiang Kai-shek's policy of eliminating dissidents. With the help of * * *, the officers and men have realized that they are gradually out of the control of the Nanjing government and embarked on the road of independent guerrilla warfare. 1937 10, Lv Zhengcao, the head of the 69 1 regiment of the 53rd Army, raised the anti-Japanese banner in central Hebei, which was adapted by a small bridge and the troops developed rapidly. Later, it was incorporated into the third column of the Eighth Route Army and established the Jizhong Military Region. 1In August, 942, 57th Army11division commander Chang Enduo and Sulu War Zone Secretary and Administrative Director Guo Weicheng led the division to hold the August 3rd Uprising. Upon hearing the news, Shandong Branch of the Communist Party of China immediately sent secret party member Wanyi (brigade commander of the 333rd brigade of the division) and Wang Zhengan back to the army. The new11division elected Wan Yi as its teacher (Chang Enduo died of illness), and later it was the coastal detachment of the Eighth Route Army. 1August, 945, under the command of Commander-in-Chief Zhu De, Lv Zhengcao, Wan Yi, Zhang Xuesi and others led their troops into the Northeast, realizing the long-cherished wish of General Zhang Xueliang and the people of Northeast China to recover their homeland. The Northeast Army went to the anti-Japanese battlefield and experienced a painful and tortuous road. They contributed to the victory of War of Resistance against Japanese Aggression with their own blood and lives.