0 1 Guan Yu's northern expedition had no backup, which was one of the reasons why he couldn't win. When we look up the history of the Three Kingdoms, we will find a very interesting phenomenon. Guan Yu's Northern Expedition was probably initiated by him, which means that this great battle was not approved by Liu Bei. This is a taboo for military strategists in history, because Guan Yu is a provincial official in politics and a subordinate of Liu Bei. If the subordinates use 60,000 to 70,000 troops without reporting to the chief in advance, the situation will be very bad.
First of all, Liu Bei has no reaction time at all. He doesn't know what's going on with Guan Yu. So he can only consider whether to send troops to help according to his own situation here.
Secondly, Guan Yu's behavior has deeply angered Liu Bei. As the head of one party, Liu Bei should have absolute control over the whole group, and Guan Yu's branch is no exception.
Moreover, Guan only considers the actual situation in Jingzhou, while Liu Bei must focus on the interests of the whole group. At that time, Liu Bei had just finished the battle of Hanzhong. Where did he get the strength to support Jingzhou? Liu Bei and Guan Yu have reached the point where they don't know each other's situation. This is a very dangerous situation. Guan Yu didn't tell Liu Bei beforehand, but after the war broke out, he asked someone to send a letter to Liu Bei. This directly led to Liu Bei not sending troops to help Guan Yu in advance.
From Yizhou to Jingzhou, Qian Shan is full of water, which can't be reached overnight, so we have to fight alone. Guan Yu has no chance of winning, whether in terms of troops or reserve grain and grass. In twenty-four years, the late Lord was the king of Hanzhong, and the former general worshipped Yu. /kloc-at the age of 0/8, Yu led a crowd to attack Coss and Fan. Tsao Gong was sent to the forbidden help benevolence. Autumn, heavy rain, the Han River flooded, and the Seventh Army was not supervised by the Forbidden City. No feathers, feathers cut general pounds. Liang, Yong and Lu Hun were thieves or received the title of feather from afar, so they supported the army and supported the party, which shocked China. -History of the Three Kingdoms
Fighting is not only combat effectiveness, but also the comparison of reserve forces. Coss has Cao Cao constantly sending more troops to help him, and he will never bring less food and grass, while Guan Yu has no hair here, so it's strange not to lose.
Cao Cao continued to send more troops to help, which belonged to the wheel war against Guan Yu. How did Cao Cao react when Guan Yu went north to Fancheng? His reaction was very great, because Cao Cao even thought Guan Yu could succeed in the Northern Expedition. Once Xiangyang and Fancheng are breached, the hinterland of Cao Wei will be exposed to Guan Yu's army, and it will be difficult for Cao Cao to move the capital.
So Cao Cao made the following struggles to ensure that Fancheng and Xiangyang were not breached. First of all, Cao Cao ordered Yu Jin and Pound to take seven soldiers and horses to Jingzhou to support Coss. In the forbidden zone, there are about 70,000 troops, 50,000 Coss,120,000 men to deal with Guan Yu's 60,000 Jingzhou soldiers. This is very important. Secondly, Cao Cao colluded with Sun Quan, who had long coveted Jingzhou. At this time, Cao Cao was able to form an alliance with him and destroy Jingzhou together, which was not a bad thing for Sun Quan, so there was the incident of Lv Meng's sneak attack on Jingzhou later.
In addition, Cao Cao then sent Huang Xu to support Coss with his army. Because the Seventh Army in Forbidden City was washed away by the flood and surrendered in Forbidden City, Cao Cao put all his eggs in one basket and gave all his hopes to Huang Xu. It can be seen that Cao Cao paid more attention to this battle than the battle of Hanzhong. The battle of Hanzhong finally turned into a chicken rib, and the battle of Xiangfan must not be lost.
Hanzhong is not so important to Cao Cao, but it is quite important to Liu Bei. It is the gateway to Sichuan. Xiangfan is not so important to Liu Bei, but it is quite important to Cao Cao, and it is an important checkpoint to enter the Central Plains. Plus Mi Fang, the satrap of Nanjun County, is in Jiangling, and the sergeant Ren Tun is in charge of public security, so he always thinks that his feathers are lighter than himself. Since leaving the army, Fang Ren has provided military resources and did not know about the rescue. Feather words? Still cure? , Fang, RenXian a full face of fear. Therefore, power yin lures Fang and benevolence, and Fang and benevolence make people welcome power. Tso sent Huang Xu to save Coss, and the troops returned. The power has been taken from Jiangling, the wives of the feather scholars have been captured, and the feather army has dispersed. The right to send the generals to attack the feathers, cut the feathers and level with Linzhou. -History of the Three Kingdoms
With so many reinforcements to deal with Guan Yu, Sun Quan was behind, and Guan Yu refused to help anyone on his side. Isn't this to let Guan Yu die himself? In four aspects, only in the wheel war was defeated.
Coss is not a vegetarian, and his ability is no worse than Guan Yu's. If you attack the city a little, Coss may not be as good as Guan Yu. But when it comes to guarding the city, Coss is definitely not worse than Guan Yu, and even better than Guan Yu. At that time, Coss was in an awkward situation, and Guan Yu's Jingzhou soldiers surrounded him. They can't beat the city, so they can only force the people in the city to death by attacking the city.
Thousands of people are guarding the city, and no one is counting boards. Feather came to the city by boat, surrounded by several weights, isolated from the inside and outside, and ran out of food, so reinforcements could not come. Benevolence stimulates soldiers to show that they will die, and soldiers feel the same way. When Huang Xu was rescued, the water was slightly reduced, the feather was hit from the outside, and the kernel was surrounded by feathers. -History of the Three Kingdoms
Coss' situation is very miserable, because there is no food and grass supply, and there has been chaos in the city. The situation of not eating will appear sooner or later, and it is normal to have chaos in the army. Therefore, Cao Ren's superb command art is reflected at this time. He kept encouraging his men to carefully arrange the distribution of food and prepare for hardship. Moreover, Coss is very courageous. He not only enjoys the same living conditions as soldiers, but also always sets an example when dealing with Guan Yu.
So in the end, even if there are only a few thousand troops left in the city, these people are still willing to follow Coss against the enemy. Wolves are cowards and sheep are cowards. Coss is the bravest of these wolves, and his soldiers will naturally serve Coss. I think he should learn from Cao Cao's thirst-quenching, and constantly give his men chicken blood to hope, that is, draw a pie, in order to finally defeat his opponent.
Summary: Guan Yu's failure is the result of internal and external troubles. There are many reasons why Guan Yu failed. But it is mainly divided into two aspects, one is internal and the other is external. The internal reason is very simple, that is, the relationship between Guan Yu and Liu Bei has become more subtle at this moment. Guan Yu was Hou Ting of the Han Dynasty, who devoted himself to the Han Dynasty, while Liu Bei wanted to dominate the world. Did these two people have an ideological struggle when they came?
We don't know, but judging from the performance of Liu Bei and Guan Yu in this war, they obviously didn't handle it well. The external reasons are a bit complicated. On the one hand, Cao Cao's continuous surge of troops has caused great pressure on Guan Yu, and he is no match for the other side in strength. On the other hand, in Jiangdong area, Sun Quan began to prepare for a sneak attack on Jingzhou. So that Guan Yu couldn't beat Fancheng, and he couldn't even go back to his hometown. In the end, Guan Yu chose to end his life when he fled. Because he knew that even if he returned to Yizhou, he would be ashamed to meet people.
References:
History of Three Kingdoms