As the inheritor of Zhuge Liang's mantle, Jiang Wei played a significant role in the development of the late Shu Han Dynasty. After Zhuge Liang's death, Shu Han's original practice of attacking instead of defending did not have a suitable executor, although at this time Jiang Wei had received Zhuge Liang's true transmission in the study of the art of war, but to reach Zhuge Liang's level, it naturally took a period of run-in research. At that time, Fei Yi was in charge of the power of Shu Han's soldiers and horses, and he took measures to recuperate, and Shu Han's strength was slowly restored.
Such a person who had greatly helped shu Han to restore his strength ended up being assassinated by Cao Wei. After Fei Yi's death, Jiang Wei took charge of the military power of the Shu Han Dynasty, and by this time he had already read the martial arts left to him by Zhuge Liang, and his ability to use soldiers had been further improved. After seizing military power, he began to continue Zhuge Liang's Northern Expedition strategy. However, he chose the Northern Expedition to be different from Zhuge Liang, who sent troops when he made sufficient preparations, and as a result, because he did not catch the right time, each Northern Expedition ended in failure.
During Jiang Wei's Northern Expedition, he seized the cao wei camp and changed, and he only took the opportunity to send troops, so his many northern expeditions achieved good results. However, the several victories of the Northern Expedition in the early stage did not last forever. Taoxi was victorious, and an important opponent of Jiang Wei appeared in the Wei army, Deng Ai, whose military ability was not inferior to Jiang Wei's, and more importantly, he also had more troops than Shu Han. Originally, Jiang Wei was able to use The Great Victory of Taoxi to march in one fell swoop, but Deng Ai and Chen Tai joined forces and sent troops in three ways, cutting off the southeast of Di Dao, and the Shu army fell into passivity, and Jiang Wei had no choice but to lead his army to retreat to the Bell Causeway. Later, he fought Against Deng Ai again, and as a result, because Hu Ji lost his time, the Shu army was once again defeated.
In 262, Jiang Wei led an army to attack Taoyang, but the result was still a failure, after this failure, the strength of the Shu army was seriously frustrated, there was no surplus of troops to support the active attack, and the Shu Han also changed from offensive to strategic defense. When Shu Han did not regain its strength, the State of Wei sent Zhong Hui Deng Ai to lead a three-way army to cut down Shu, and there were few generals left in the State of Shu who could fight alone at this time, Jiang Wei led his army to resist zhong Hui's main force, but Deng Ai led a group of men and horses to bypass the key points of the Shu army's defense and directly attacked Chengdu in the rear of the Shu state, and Liu Chan was forced to surrender. Jiang Wei devoted the second half of his life to the Northern Expedition, but still failed to succeed.
It seems that Deng Ai is a big enemy he faces, and the reason why he failed many times during the Late Northern Expedition was precisely because he encountered Deng Ai, an opponent. But is it true that his military ability is inferior to Deng Ai's, and he has repeatedly suffered defeats? Liao Hua explained the reason, Jiang Wei's military strategy talent was not worse than Deng Ai's, but he was not as significantly superior to his opponent as Zhuge Liang. Coupled with the perennial conquest of the Shu state, the strength of the troops was in a very passive situation, and the combat effectiveness of the army was not restored, so it continued the Northern Expedition, so naturally it could not defeat the Wei army. From another point of view, the national strength of the Shu state was originally weaker than that of the Wei state, and the perennial conquest was almost the same as the consumption of the two countries. However, the State of Wei recovered faster, and after accumulating in this way, the State of Shu became more and more passive.
After Jiang Wei's first few northern expeditions were successful, if he did not continue to fight, but chose to recuperate, perhaps the Shu state's troops would not be depleted so quickly. Even if the Shu state was unable to take the initiative to send troops to attack the state of Wei, the two sides could maintain a state of equal strength. Even if the State of Wei sent a large army to attack the State of Shu, the State of Shu would not surrender to the State of Wei because of the emptiness of the rear defense.