南口是北平通往西北地区的门户,南口作战成为保卫察、晋、绥的关键性战役。中国守军虽然凭借有利地形进行了顽强战斗,但终归失败。就其原因主要是两个方面:就日军方面来讲,主要是七七事变后,对中国采用的战略战术作了相应的调整,集中使用兵力、先发制人、突然袭击、侧翼佯攻包抄、正面死战、远程合围等,在实战中得到了运用。就中国军队方面来说,主要是指挥不统一、仓促应战、战术保守、单纯防御、阵地对抗,加之武器装备落后、通讯设备不良等,因而致使日军的战略战术在中国南口能够得以贯彻并达到目的。 The south exit is the gateway to the northwest of Peiping, and the south exit operation becomes the key battle to defend the police, Jin and Sui. Although the Chinese defenders conducted a stubborn battle with favorable terrain, they failed after all. The reasons are mainly two aspects: In the case of the Japanese military, mainly after the Seventy-Seven Incident, the strategy and tactics adopted by China were adjusted accordingly. Concentration on the use of force, preemptive strikes, surprise attacks, flanking feints and outflames, Remote encirclement, etc., have been used in actual combat. As far as the Chinese military is concerned, it is mainly because of the unification of command, the haste, the conservative tactics, the simple defense, the confrontation in positions, the backwardness of weaponry and equipment, and the poor communication facilities, thus leading the Japanese tactics and tactics to be implemented and achieved in South China. .