Battle of Baitag Bogd
Part of the Ili Rebellion and Chinese Civil War
Date 1946–1948 Location Baitag Bogd, Xinjiang, China (on the Chinese–Mongolian border) 45°12′N 90°54′E / 45.2°N 90.9°E / 45.2; 90.9 Result Status quo ante bellum[1]
Belligerents
China	Mongolia  Soviet Union
Commanders and leaders
Chiang Kai-shek Zhang Zhizhong Ma Chengxiang Ma Xizhen Han Youwen Osman Batur	Khorloogiin Choibalsan Joseph Stalin
Units involved
National Revolutionary Army 14th Tungan (Chinese Muslim) Cavalry Regiment[1]	Mongolian People's Army Soviet Air Forces
Baitag Bogd Location within China

The Battle of Baitag Bogd Mountain (Mongolian: Байтаг богдын тулгарал, romanized: Baitag bogdyn tulgaral) or Beitashan Incident (Chinese: 北塔山事件; pinyin: Běitǎshān shìjiàn; Wade–Giles: Pei-ta-shan shih-chien; alternatively Baitak Bogdo incident)^[2] was a border conflict between China, Mongolia, and the Soviet Union. The Mongolian People's Republic became involved in a border dispute with the Republic of China, as a Chinese Muslim Hui cavalry regiment was sent by the Chinese government to attack Mongolian and Soviet positions.^[3]

There had always been a Chinese police force stationed at a Xinjiang police station with Chinese sentry posts before and after 1945.^[4][5]

As commander of the First Cavalry Division, Salar Muslim Major General Han Youwen was sent to Baitag Bogd by the Kuomintang military command to reinforce Hui Muslim General Ma Xizhen with a company of troops, approximately three months before the fighting broke out.^[6] At Baitag Bogd, Han Youwen was in command of all Muslim cavalry defending against Soviet and Mongol forces.^[7] Han told American reporter A. Doak Barnett that he believed the border should be about 65 kilometres (40 miles) north of the mountains.^[1]

Chinese Muslim and Turkic Kazakh forces working for the Chinese Kuomintang battled Soviet and Mongol troops. In June 1947 the Mongols and the Soviets launched an attack against the Kazakhs, driving them back to the Chinese side. However, fighting continued for another year, 13 clashes taking place between 5 June 1947 and July 1948.^[1]

Mongolia invaded Xinjiang with the intention of assisting Li Rihan, the pro-Soviet Special Commissioner, in gaining control of Xinjiang, over Special Commissioner Us Man (Osman) who was pro-ROC. The Chinese defence ministry spokesman announced that Outer Mongolian soldiers have captured Beitashan, and stated that troops^{[clarification needed]} were resisting near Beitashan.^[8]

Elite Qinghai Chinese Muslim cavalry were sent by the Chinese Kuomintang to destroy the Mongols and the Soviets in 1947.^[9][10]

In early June 1947 Beitashan was re-taken by Chinese troops, who continued to fight against Soviet and Mongolian bomber planes; China's Legislative Yuan demanded stronger policies against the Soviet Union in response to the Mongol invasion.^[11] The bombs started dropping from Mongol and Soviet planes on 5 June.^[12]

Republic of China forces took eight Outer Mongolian troops prisoner while 30 horses and two Republic of China soldiers died in a bombing.^[13] The Republic of China issued a protest against the border attack by the Mongols and Soviets.^[14] The Republic of China accused Soviet planes of being involved in the attack.^[15] The American ambassador to China branded the Outer Mongolian state as a tool and arm of the Soviet Union.^[16] The Soviets were aiming their intervention against the Kazakhs.^[17] Chinese Gen. Sung displayed captured Soviet-style Mongolian military headgear and a Soviet map to the American ambassador.^[18] The Soviet Tass news agency claimed that Mongolian officers were gruesomely murdered and mutilated.^[19] Douglas Mackiernan was sent to Baitag Bogd on 19 June 1947.^[20] The Mongolians possessed Soviet weapons which were seized from Soviet troops in battle.^[21] The Kazakhs were suffering from a dearth of edible supplies.^[22] The entire Baitag Bogd was threatened by Outer Mongol occupation according to Kazakh leader Osman.^[23]

Chinese Gen. Ma Xizhen and Kazakh Osman Batur fought against the Mongol troops and airplanes throughout June as fierce fighting erupted.^[24] The MPR used a battalion-size force and had Soviet air support in June 1947.^[25] The Mongolians repeatedly probed the Chinese lines.^[26][27]