Fourth Field Army
On March 11, 1949, the Northeastern Field Army was renamed the PLA's Fourth Field Army. The army comprised the 12th, 13th, 14th, 15th Corps Army, special technical troops, the Column of Guangdong and Guangxi, and the 50th and 51st Corps. William W. Whitson, writing with Chen-Hsia Huang in "The Chinese High Command", 1972, lists several armies under the Fourth Field Army in the June–September 1949 period. He writes that the 12th Army comprised the 41st, 42nd, 45th, and 46th Corps, the 13th Army comprised the 38th, 39th, and 49th Corps, and gives the 14th Army as comprising the 48th Corps (142nd, 143rd, and 144th Divisions) and the 54th Corps (160th, 161st, and 162nd Divisions). He lists a commander for the 14th Army, but this differs from seemingly unanimous current consensus that the 14th Army's commander at the time was Liu Yalou. Also part of the Fourth Field Army at the time was the 15th Army, with several subordinate corps. Separate corps may have included the 50th, 51st, 54th, 56th, and 58th.