First, Guan Yu was defeated by Fancheng Guan Yu was temporarily carried away by success after winning the victory of the flooded Seventh Army. While attacking Fancheng with warships and floods, he expanded his army to the north. Its vanguard troops arrived in Yancheng, and it was not until Fancheng breached that they launched an attack to the north. At that time, the situation in the north was also quite good. Many people who were dissatisfied with Cao Jun's rule revolted from afar and obeyed Guan Yu's orders.
But Guan Yu's practice actually violated the principle of Sun Tzu's art of war, and he dispersed his military power. In the initial strategy and tactics, Guan Yu was not given such a big development strategy. At that time, Liu Huangshu repelled Cao Cao in Hanzhong, so he sent Liu Feng and Meng Da to occupy Shang Yong.
In this way, giving me Guan Yu led to a favorable situation of besieging Xiangyang. At that time, Cao Jun's main force was sent to Hanzhong by Cao Cao. When Cao Cao retired, he could not leave quickly because of his physical condition. Cao Cao, whose name is open to the public, doesn't trust him. The only generals he trusts are Xia, Xiahou Chun and Coss. Xia is dead, Coss is in Fancheng, and Xiahou Chun is sick. In that case, Cao Cao would have no general to rescue Xiangyang.
Moreover, Guan Yu has an elite water army under his command, which can control the Hanshui River. In this way, Guan Ba's army was divided in Xiangyang. Even if Fancheng can't attack, taking Wuhan can achieve its goal. In that way, Wuhan and Jiangling are integrated, and two safe passages, Xiangjiang River and Hanshui River, are connected with Shu. Since then, Guan has been able to attack and retreat and defend, and he is no longer afraid of the attacks of Cao Cao and Sun Quan. When Wuhan was captured, it was difficult for Fancheng to keep it well, and finally Coss had to evacuate.
Originally, Guan Yu's plan should be like this. This plan is foolproof. Because of the protection of the water army, even if Xiangyang can't be laid, Guan can still get away, and it's not easy to lose.
However, because Guan Yu won the unexpected victory of the seventh army flooded, the strategic situation was favorable, and he did something beyond his own strength and forgot his original strategy and tactics. However, in this way, Guan Yu fell into the Jedi. On the one hand, he wants to expand the vanguard troops to the north, on the other hand, he wants to contain Fancheng and Wuhan, and he also needs to escort the prisoners back to Wuhan. This embarrassed Guan Yu's military strength. In desperation, she could only provide support to superior Liu Feng and Meng Da, but they ignored the overall situation and did not accept Guan Yu's request.
In this case, we can only secondment Guan to guard against Dongwu's military forces from the north and then put them into the arena. But that's nine Niu Yi hairs. Finally, Cao Cao returned to Zhengzhou, sent reinforcements to support Huang Xu, and asked Huang Xu to rescue Coss. Cao Cao also specifically told Huang Xu to wait until the main force arrived. Guan Yu was defeated by Huang Xu because he was outnumbered, so he had to solve the siege of Fancheng. This is also Guan Yu's first defeat in Jingzhou.
Second, Guan Yu defeated Jiangling after the defeat outside Fancheng, Guan Yu had to solve the siege of Fancheng. However, Guan Yu was not willing to make a trip in vain, but still blocked the Hanshui River with the water army and attacked Wuhan. Although Cao Jun has many troops, he can only do nothing.
At this point, Cao Cao deliberately leaked the contents of Sun Quan's secret letter to Guan Yu in order to turn Guan Yu and Wu against each other. However, Guan Yu hesitated, and could not bear to give up his upcoming record and retreat. Then came the news that Jiangling and the public security organs had fallen. Guan Yu suddenly realized and quickly withdrew.
But in this case, it is too late. Guan Yu's indecision missed the fighter plane. Because Guan Yu dispatched troops to defend Wu, he was depressed afterwards. So, under the siege of Lv Meng's soldiers, Fu Shiren of the public security organs and Mi Fang of Jiangling surrendered to the State of Wu. In particular, the fall of Jiangling did great harm to Guan Yu.
Mainly because in Guan Yu's army, relatives of officers and men are all in Jiangling. The fall of Jiangling prompted such relatives to fall into Wu's hands. The general of Wu once again adopted the tactics of psychological warfare. He gives preferential treatment to such relatives, sympathizes with the elderly, sends medicine to his door when he is sick, and gives him clothes when he is hungry and cold. When the British envoys sent by Guan Yu blamed the siege of Wu, he asked them to go door to door.
At that time, in order to ensure the fighting spirit of the army, Guan Yu told his men that his relatives were also killed by Wu. In this way, Guan Yu's words are self-defeating. Guan Yu's men learned that their loved ones were in good health and their lives were better than in the past, and they all lost their fighting spirit.
Not long after, Guan Yu's elite soldiers gradually dispersed their variables because of changes in morale. Guan Yu had to lead many troops to Baomai City, which was surrounded by the State of Wu, because his elite soldiers collapsed. Later, Guan Yu was captured and killed by Wu's ambush on his way to Xichuan. It can be said that the failure of Guan Yu and the fall of Jiangling are the main factors.
Third, Guan Yu finally defeated Yidu. However, the fall of Jiangling and relatives is the main reason for Guan Yu's failure, but it is not the final reason for Guan Yu's failure. The ultimate reason for Guan Yu's failure was the fall of Yidu.
When Guan Yu learned that Jiangling and the public security organs had fallen, he had two choices. One is to evacuate from Hanshui. Although this choice will damage part of the military strength, due to the strong water army, at least part of the overall strength can be guaranteed. The second is to withdraw south. But it is very dangerous to retreat to the south. Mainly because Jiangling and the public security organs fell into the hands of Wu, Guan Yu became a soldier without a successor. In addition, the Jiangxia area was manipulated by Wu, and the Hanshui water army could only be lost. What about the service guarantee for these 30 thousand to 40 thousand people?
Therefore, Guan Yu has only one way to retreat south and return to Jiangling, and that is to rely on Yidu in the upper and lower reaches of Jiangling. Take Yidu as your own responsibility and resist Wu. Yidu may be 400 miles from Wuhan. If it's fast, we'll be in Yidu in a few days. So Guan Yu finally adopted the plan of withdrawing from the south.
However, when Guan Yu arrived in Dangyang, he got the message that Yidu had been occupied by Lu Xun of Wu! As a result, all the preparations for Guan Yu were gone. Yidu fell, Yidu secretariat Fan You inquired about abandoning the city and fled. After Fan You fled, Yidu was in chaos. Lu Xun easily occupied Yidu and subdued tens of thousands of people.
It can be seen that Yidu is not without generals. If Fan You can resist Yidu for a few days with his dangerous terrain, Guan will come to Yidu. Then the situation is completely different. Guan Yu died because of Fan You's cowardice.
I originally wanted to use Yidu, relying on the upstream and downstream potential of Yidu and Wu Zhouxuan. At worst, you can return from Xiangjiang by surprise. But by this time, Guan Yu's elite soldiers had become a fire. Surrounded by enemies on all sides, with no money or food inside and no reinforcements outside, Guan Yu's elite troops were routed. Guan Yu had no choice but to die.
Conclusion Guan Yu missed the best opportunity to save because of his misjudgment of the war situation and his hesitation in handling it in Jingzhou. This made him repeatedly defeated in Fancheng and Jiangling wars. Guan Yu's elite soldiers were discrete variables, so they had to go to Baomaicheng and were finally killed by the captives of the State of Wu.
However, all these are just appearances. At that time, Guan Yu went south, not only to evacuate, but also to recapture Jingzhou with Yidu. However, Liu Huangshu's Yidu secretariat Fan You fled without fighting, making Yidu easily fall into the hands of Lu Xun. Fan You's timidity made Guan Yu lose his last hope and his last retreat. It can be said that Guan Yu's death was not only caused by Lu Meng, Lu Xun, Fu Shiren and Mi Fang, but also by Fan Kuai. How to treat Guan Yu's downfall step by step? Welcome to leave a message in the comment area for discussion.