Later , Sibo and Mongol battalions were upgraded to regiments , but when Kazakh irregulars under Osman Batur defected to the Kuomintang in 1947 , Kazakh cavalry regiment of National Army defected to Osman Batur .
Later , Sibo and Mongol battalions were upgraded to regiments . 
 When Kazakh irregulars under Osman Batur defected to the Kuomintang in 1947 , the Kazakh cavalry regiment of National Army also defected to Osman Batur .