First, the death of Guan Yu.
The twenty-four years of Jian 'an is a crucial year in the history of Shu and Han dynasties. This year, Liu Bei sent troops from Yizhou to attack Hanzhong in the north, trying to take Hanzhong away from Cao Wei. In order to cooperate with Liu Bei's war on the western front, Guan Yu also sent troops from Jingzhou in this year and launched a storm on the front line of Cao Wei Xiangyang Fancheng.
At first, Guan Yu was on a roll. Fan Cheng's men wiped out 30,000 elite troops that were banned, which had a great influence on China at that time. Cao Cao was greatly surprised and quickly sent troops to resist Guan Yu. While Guan Yu was fighting Cao Jun at the front, I didn't expect Sun Quan to stab him in the back. Although Sun Quan is an ally of Liu Bei, he has long coveted Jingzhou. Now is the golden opportunity for Sun Quan to leave Jingzhou with Guan Yu as the main force. He sent general Lv Meng to cross the river in white, captured Jingzhou in one fell swoop and copied Guan Yu's lair.
When the news reached the front, Guan Yu was greatly shocked. Not only the logistics of the army are in Jingzhou, but also the families and property of his subordinates are in Jingzhou, and now they all fall into the hands of Wu. Guan Yu's men's hearts are floating, but the soldiers have no fighting heart. On the one hand, the cunning Lv Meng was kind to the families of Shu soldiers, and on the other hand, he lost no time in persuading them to surrender. Guan Yu's men fled in large numbers and surrendered to Wu.
In the end, Guan Yu was caught between Scylla and Charybdis, and fled before and after Cao Wei and Wu Dong. When Guan Yu fled to Linzhou, he was caught by the ambush of Pan Zhang, the general of the State of Wu. Sun Quan was worried about his sleep and ordered Guan Yu to be beheaded. A generation of famous soldiers died in battle. Guan Yu is full of resentment against Wu's treachery. Before he died, he shouted the words "May my brother arise and hate my brother with snow".
Second, Liu Bei launched the Yiling War.
The news that Guan Yu was killed by Wu soon spread to Shu, and Liu Bei was angry and sad. In particular, Guan Yu's words left before his death made him heartbroken, so he desperately transferred troops to the country and launched a war of revenge against Wu.
However, Liu Bei forgot the famous saying in Sun Tzu's Art of War: "Your master should not be angry and start a division, and he will not fight if he is angry." In a rage, Liu Bei made the mistake of being impatient and underestimating his enemy. He just wants to destroy Wu as soon as possible and avenge Guan Yu.
Lu Xun, a famous athlete in Wu Dong, took up the battle calmly and commanded properly. First, he adopted the tactic of avoiding its spirit, and defeated the enemy without fighting and fought a protracted war. Liu Bei's army is under the strong city, and it is unwilling to retreat if it wants to advance, and the supply of logistics food is gradually unsustainable. The fighting spirit of the Shu and Han armies is getting lower and lower. Lu Xun sized up the situation, and only then did he suddenly launch a counterattack. At the same time, he made full use of the terrain and launched a fire attack. Finally defeated Liu Bei in the battle of Yiling. Liu Bei's army of more than 700,000 troops was almost wiped out and suffered an unprecedented blow.
For the sake of brotherhood, Liu Bei put the national interests behind him and finally suffered a big loss.