In 1945, Mongolian forces participated in the Soviet invasion of Manchuria under the command of the Red Army, among the last engagements of World War II. A Soviet–Mongolian Cavalry mechanized group under Issa Pliyev took part as part of the Soviet Transbaikal Front. Mongolian troops numbered four cavalry divisions and three other regiments. During 1946–1948, the Mongolian People's Army successfully repelled attacks from the Kuomintang's Hui regiment and their Kazakh allies in the border between Mongolia and Xinjiang. The attacks were propagated by the Ili Rebellion, a Soviet-backed revolt by the Second East Turkestan Republic against the Kuomintang Government of the Republic of China. This little-known border dispute between Mongolia and the Republic of China became known as the Pei-ta-shan Incident.