马家军
In addition, the Ma clique and the Xinjiang clique, both KMT affiliates, were contesting each other in the western fringes from 1931 until 1937 in the Xinjiang Wars when the Soviet Union's support helped the Xinjiang group to triumph. Xinjiang then became a Soviet protectorate and safe haven for Communists. The Ma clique also fought Sun Dianying in 1934.