马家军
After dozens of battles occurred from October to December 1949, the Nationalists were driven to the remote regions of China. As a result, they adopted more guerrilla tactics. There were a total of 67 bandit groups in Gansu, over 40 bands in Shaanxi, and several bands in Xinjiang. In Qinghai, more nationalist regular troops existed, soldiers of Ma clique. In November 1949, the PLA launched a campaign to eradicate bandits completely.