73rd Group Army

The 13th Column, commanded by Chou Chih-chien was composed of three divisions, including the 37th, 38th, and 39th.

In the mid-to-late 1940s the 13th Column was reorganized and redesignated as the 31st Corps, also commanded by Chou Chih-chien.

[5] It participated in the capture of Xiamen and Gulangyu, and the Battle of Guningtou, in October.

[8] In early October 1991 the 258th Regiment of the 86th Motorized Infantry Division, along with units from various military sub-districts, conducted defensive exercises and combined militia exercises in the Banding Area, Lianjiang Xian, Fujian Province.

In mid October to early November 1991 the 92nd and 93rd Infantry Divisions (since disbanded) of the 31st Group Army conducted routine training and field training activities in the Fuzhou area of Changpu and Nanan.