86 years ago today, on December 18, 1939 (November 8, 1939 in the lunar calendar), the Kunlun Pass counterattack began. On December 18, 1939, the Kunlun Pass counterattack began, which was the last large-scale battle in the first stage of the Anti-Japanese War, stabilizing the front with the final victory of our army. In December 1939, the Chinese army launched a counterattack against the Japanese invaders in southern Guinan. In November 1939, in order to cut off the international communication line between Guangxi and Vietnam in southwest China and open up its naval air base for inland operations in Nanning, under the command of Ando Liji, commander of the 21st Army, Bai Chongxi, director of the Guilin battalion, assembled 150,000 people and 100 aircraft in mid-December, and began a general attack on the 18th. He launched a centripetal attack on Nanning from the north, east and west. Assembled 4 divisions and a part of the Marine Corps and Air Force, forcibly landed in Qinzhou Bay (now Guangxi), Guangdong, captured Nanning, and captured Kunlun Pass on December 4. Kunlun Pass is located at the key point of Yongbin Highway, about 40 kilometers north of Nanning, and the terrain is extremely dangerous. In order to prevent the Japanese army from penetrating into Liuzhou, Guiyang and other places, the Chinese government deployed the Battle of Guinan, and decided to start a counter-offensive on this key battlefield. Bai Chongxi, the director of the Guilin battalion, assembled more than 150,000 people and 100 aircraft in mid-December, and began a general attack on the 18th. He launched a centripetal attack on Nanning from the north, east and west. The Fifth Army attacked the first part of the Japanese 5th Division, which was guarding the front of Kunlun Pass, and the Japanese retreated to the core position one after another. On the 19th, the 1st Division of the Fifth Army, Zheng Dongguo Honor, continued to attack Kunlun Pass, annihilating the Japanese garrison there. On the 24th, Masao Nakamura, the commander of the 21st Brigade of the 5th Division of the Japanese Army, led his unit to be attacked by the Fifth Army on Kutao Ridge, northeast of Jiutang. The Kunlun Mountain scenery suffered heavy On the 31st, the Chinese army captured Kunlun Pass. This battle was the first time since the Anti-Japanese War that the Chinese army used the coordinated combat of foot, tank, artillery and air, annihilating more than 4,000 Japanese troops and laying the foundation for the victory of the Battle of Southern Guangxi.