During this period, the Volunteer Army was the absolute main force, contracting more than 96 percent of the combat tasks on the battlefield. The Korean People's Army, which was badly injured and already weak in combat, was tasked with mobilizing the masses to support the front line and cooperate with the volunteer army. Since the Un Army always believed that China did not participate in the war in the early stage of the campaign war, and even if it participated in the war, it was only a small group of troops defending some important areas, so the understanding of the Volunteer Army was not very large. However, in the middle and late stages, after receiving the news of the volunteers' participation in the war, the Un Army also began to learn how to distinguish whether the other side was a volunteer or not through the sound of gunfire on the battlefield, and through the density of firepower, it could also determine whether the other side was an elite unit.
In the case of superior aviation fire support and aerial reconnaissance of the United Nations Army, the size of the volunteer army's single units in the movement wartime was mainly company and platoon. Each company is about 150 to 180 people, and each platoon has about 40 people. Don't underestimate the power of these small units on the battlefield. According to the organization, each company of the Volunteer Army has 1 company headquarters and 3 platoon headquarters, and the main combat unit is 9 infantry squads plus 1 mortar platoon. Depending on the situation and the nature of the force, some of the firepower will also be strengthened. For example, the sharp company that is at the forefront of the regimental and battalion-level troops will have additional heavy machine gun squads and mortar squads reinforced. Therefore, many times when we understand the history of the war, we often see that a company of the Volunteer Army has battalion-size heavy machine guns and 81/82 mm mortars, and the number of people has reached 180 or even more, which is normal.
For United Nations soldiers, if they were to be hit by volunteers on the road, if there was the sound of mortar fire, it must be a company-sized unit or an elite reinforcement platoon. Subsequently, the United Nations army will send a vanguard force to first launch a "fire reconnaissance" attack on this volunteer position, mainly through the sound of gunfire to judge the fire configuration and specific conditions of this force. If the sound of Czech light machine guns, civilian 24 heavy machine guns or other heavy machine guns and mortars appeared at the same time, and the density of rifle salvo fire was very large, it must be the battalion company-level troops deployed here. At this time, it was fortunate that half of the UN army's troops responsible for "fire reconnaissance" could be withdrawn. Because the Volunteers were different from other units, in order to reduce the efficiency of UN air support and artillery support, and expand their own position firepower, they usually put the UN forces that were tentatively attacking in a very close position and then open fire.
During the Tieyuan Blockade Battle, Fu Chongbi, commander of the 63rd Army of the Volunteer Army, deeply felt the pressure of 70,000 US troops, and after receiving the telegram "Hold out for 15 days" issued by General Peng of the General Headquarters of the Volunteer Army, he divided the remaining 9,400 combatants of the 189th into more than 200 copies and spread them on more than 200 positions on multiple lines, so that 70,000 US troops and other UN troops could be removed one by one, and in the process of removal, they bought time for the other fraternal units of the Volunteer Army. As for the deployment of Fu Chongbi, commander of the 63rd Army, the COMMANDER of the US Army, Ridgway, knew the reason for it, and he also knew that the Volunteer Army was delaying time and delaying the general offensive of the United Nations Army. However, for the more than 200 small positions of the Volunteer Army, the United Nations Army could not quickly remove them, although some of them had only 2 squads or 1 platoon, but because of the construction of perfect artillery fortifications and anti-artillery holes, the effect of the US artillery bombardment was quite limited.
Delayed by this tactic, it took the U.S. military 3 days to barely open a passage. But by now it was too late. When the Un Army spent 3 days to open the passage between the positions of the 189th Division, the other units of the 63rd Army had already formed a perfect fortification group in the inner encirclement of the Iron Plains, while the Volunteer Troops on other fronts had completed a short rest due to the stubborn resistance of the 189th Division, and the personnel establishment had been adjusted. To this end, Ridgway had to abandon the "worship offensive" plan and make other adjustments.