In the Ural-Guryev operation of 1919–1920, the Red Turkestan Front defeated the Ural Army. During winter 1920, Ural Cossacks and their families, totaling about 15,000 people, headed south along the eastern coast of the Caspian Sea towards Fort Alexandrovsk. Only a few hundred of them reached Persia in June 1920. The Orenburg Independent Army was formed from Orenburg Cossacks and others troops which rebelled against the Bolsheviks. During the winter 1919–20, the Orenburg Army retreated to Semirechye in what is known as the Starving March, as half of the participants perished. In March 1920 her remnants crossed the border into the Northwestern region of China.