sentences:  The two nationalist reorganized divisions deployed from southern Shanxi to Shaanxi to attack Yan'an were forced to abandon their original objective and redeployed back to southern Shanxi, and Hu Zongnan was also forced to order another two divisions to attack Daning (大宁) and Pu (蒲) County from Linfen and Ji (吉) County in an attempt to retake the territory lost to the enemy.Facing the nationalist counteroffensive, the communists formed a new command to better control all of the communist units in Lüliang region, and the three-men committee consisted of Chen Geng (陈赓), the commander-in-chief and Xie Fuzhi, the political commissar of the 4th Column of the communist Shanxi – Henan – Hebei – Shandong Military District, and Wang Zhen, the commander-in-chief of the 2nd Column of the communist Shanxi – Suiyuan Military District.The communists of the 4th Column decided to maximize the terrain advantage in their next move, since the local landscape was a great obstacle for deploying mechanized force for fast mobile warfare which the nationalists were good at.