At the beginning of 234, the prime minister led an army of more than 100,000 people to all the families of Shu Han and launched the last Northern Expedition. Shu Han has never sent troops to the Northern Expedition on such a large scale! The rise and fall of the Han dynasty is in one fell swoop!
Looking back at the previous dispatch of troops by Shu Han, in the spring of 228, the prime minister's first northern expedition, Zhao Yun set up suspicious troops in Xiegu, and Ma Tan failed to carry out the military order, resulting in the failure of the Battle of Jieting and the Shu army was forced to retreat.
In the winter of 228, the prime minister's second northern expedition attacked Chencang, although the city was sieged for more than 20 days, but the Shu army had no choice but to withdraw from the army. In 229, the prime minister's third northern expedition, Guo Huai led troops to rescue, but was forced to retreat by the prime minister's main force, and Chen Shi took advantage of the situation to take Wudu and Yinping two counties.
In the autumn of 230, Cao Rui ordered Cao Zhen and Sima Yi to attack Shu, but due to the difficult and dangerous roads in Hanzhong, the plank road was washed and cut off by the rain during the rainy season, Cao Zhen was forced to withdraw his troops, and Wei Yan counterattacked on the western front and defeated Guo Huai.
In 231, the prime minister's fifth northern expedition defeated Sima Yi, but Li Yan failed to transport grain and deceived the prime minister, causing the Shu army to be forced to retreat, but during the retreat, he shot and killed the pursuing Zhang He.
In this Northern Expedition, Shu Han did his best, and the success or failure was in one fell swoop!
The six Northern Expeditions, although the results were not obvious, the prime minister's determination was still firm. As he said in the teacher's table, he set the Central Plains in the north, eliminated the traitors, revived the Han Dynasty, and returned to the old capital, which was his promise to the first emperor and His Majesty.
In the Sixth Northern Expedition, the prime minister gave up the conventional attack from Qishan Road, and chose to take the Bao Slope Road and take Guanzhong directly. The Baoshui Road starts from Baogukou in the south, reaches the mouth of Xiegukou in the north, and runs along the Xishui River Valley, a tributary of the Han River, and the Weishui tributary.
In the first Northern Expedition, Zhao Yun once went out of the Kei Valley as a suspicious soldier, and when he withdrew the army, because Cao Zhen pursued too fiercely, he was forced to set fire to hundreds of miles of plank roads. For this reason, in addition to training troops in Hanzhong, cultivating farmland, and accumulating grain and grass, the prime minister also sent people to repair the plank road as soon as possible to prepare for the needs of the Northern Expedition.
The southern section of the Baoshui River is the Baoshui River Valley, and the northern section is the Xieshui River Valley, and between the two river valleys there is a Kei Valley where troops can be stationed. If you go northeast from Miniya, you will find the slope.
When the Shu soldiers were repairing the plank road, they found that there was a trail taken by the locals in the northwest: the Suiyang Trail. The prime minister ordered people to widen the Suiyang Trail to facilitate the passage of the army.
However, due to the turbulent turbulence of the two rivers, it is impossible to sail at all. So the prime minister worked hard and made a big invention: the flowing horse. Tens of thousands of people make more than 500 miles of praise slopes, and the road fruit is close, and the water is turbulent and stone, and it cannot be wet.
I have to admire the prime minister, who is proficient in internal affairs, military affairs, and diplomacy, and can also create inventions. In this Northern Expedition, the Han army dispatched the largest corps in history, but it was no longer bothered by food problems.
In April, the Shu army camped north. After leaving the valley, the prime minister sent troops to occupy the Wuzhang Plain, which was ten kilometers northwest of the valley. Ma Jun, the great inventor of the Wei Kingdom, also created many important inventions, including the restoration of the guide car, the improvement of the silk weaving machine, the production of the keel waterwheel, the production of the stone machine, and the modification of the Zhuge repeater.
Why did the prime minister choose Wujoyuan as a base? Because the highlands are flat, it is suitable for tuntian. The Shu army had strict military discipline and got along well with the local Wei people, showing a harmonious scene of "the people are safe and the army is selfless".
In order to ensure food **, the Shu army took a variety of measures to show that the prime minister was ready to fight a protracted war with the Wei army. The Prime Minister's dispatch of troops worried the entire Wei State, and the Great Sima Cao Zhen, the Che Cavalry General Zhang He, and the Great General Sima Yi all suffered defeats in the battle against the Prime Minister.
Wu's evaluation of the prime minister was that he single-handedly made it impossible for the first power of the Three Kingdoms to relax its vigilance, and Sun Quan also launched Wu's largest Northern Expedition, attacking Wei on three fronts.
Sun Quan personally led an army of 100,000 troops from the mouth of the Xu, and together with the Shu State, launched a large-scale attack on Cao Wei, which had never been seen since the founding of Cao Wei. Faced with this situation, Cao Rong was calm and calm, and dispatched troops.
Liu Ye once commented that Cao Rong was "Qin Shi Huang, Han Xiaowu, and only a little less than the ear", and the Cao family's ** ability is indeed very strong. The field corps of Wei are mainly distributed in Youzhou, Yongliang, Jingzhou and Huainan, and this time the three major theaters were attacked at the same time, how should the ** army stationed in the surrounding areas of Luoyang be deployed?
Cao Rong decided to send Qin Lang, the protector of Shu, to supervise 20,000 cavalry, accept the emperor's festival, and personally lead the army to fight against Sun Quan. After Qin Lang received the order, Starry Night rushed to Guanzhong.
And what is Cao Rong's real opponent, Prime Minister Sima Yi, doing? Sima Yi has also been very busy over the years, he is a great talent in internal affairs. He sent 5,000 Jizhou farmers to camp in Shangqi, practice the battle formation in autumn and winter, and repair fields and mulberry in spring and summer.
In this way, the Guanzhong military has more than enough and is already prepared when waiting for the enemy to attack. He also opened a national canal, from Chencang to Huaili to build Linjinpi, leading more than 3,000 hectares of land to irrigate Luoluo, so that the treasury was enriched.
Sima Yi did not slack off, he immediately began to change his tactics after the prime minister took Wuzhangyuan. Those who are good at fighting cause others but not others. You have to mobilize others, and you can't let others mobilize you, so that you can seize the initiative in the war.
The Shu army began to cross Weishui and control the northern plains north of Weishui.
It can block the communication between Longyou and Guanzhong, and although the Shu army lacks the strength to launch an attack on Longxi, it can incite the Qiang people to revolt, thereby shaking the rule of Wei.