Zhuge Liang made several mistakes in the war in his life. What are they?

Zhuge Liang made three mistakes in fighting.

Zhuge Liang strategized and strategized, but actually he didn't know how to use troops. He sent the wrong generals in three world wars and made repeated mistakes, which led to defeat.

The first place is Battle of Red Cliffs. Although Shu and Wu United and Pang Tong staged a serial story and defeated Cao Cao's 830,000 troops, Zhuge Liang was controlled by Guan Yu in Huarong Road at the last pass. Guan Yu was soft-hearted, thanked Cao Cao for his old feelings, and let Cao Cao go, which caused great disaster in the future.

The second place is to appoint Ma Su, who can only be talented, to lead an army to attack Zhang He, a famous street pavilion, and to hand over a life-and-death battle that can be easily won, so that Cao Cao's strength can be further enhanced and Shu can be finally destroyed.

The third is the death of Guan Yu. Although Guan Yu is respected by the world as a soldier, he is actually very arrogant, can't fight, and doesn't have many good ideas. But he was left alone to guard Jingzhou, and finally he accidentally lost Jingzhou. Actually, was it careless? Zhuge Liang knew Guan Yu's nature like the back of his hand, but he was not good at employing people, which led to his failure. The fall of Jingzhou led to the disintegration of the army, and Guan Yu had no rear support. Finally, he was defeated by Maicheng and was captured and died.