The reason why Liu Yin rushed to Tongguan in a hurry was that he thought that the situation had reached the point where it was out of control, and he originally thought that it would take some time for the occurrence of Wuhu Chaohua, but now it seems that it is imminent, and Liu Yin must prepare in advance.

The real Wuhu Chaohua occurred more than 30 years later in the Yongjia period, so it is also known as the Yongjia Rebellion, the Wuhu Chaohua has deep roots, the main reason is naturally inseparable from the rebellion of the eight kings within the Jin Dynasty, but it is undeniable that Liu Yuan played an important role in it, it is precisely because Liu Yuan is very ambitious and good at judging the situation, he will choose to do it when the Jin Dynasty is the weakest.

Maybe according to the current trajectory of development, thirty years later, maybe the conditions of the Wuhu turmoil have disappeared, Liu Yuan wants to rebel is also not enough, but Liu Yuan is Liu Yuan after all, he is good at seizing all possible opportunities, in his opinion, now the Jin domestic and foreign troubles are the best opportunity for the Huns to raise troops, and sure enough, Liu Yuan did not hesitate to start a rebellion.

Maybe Liu Yuan didn't realize what a magnificent wave his action would set off on the land of the Central Plains.

Liu Yin arrived at the front line of Tongguan, and the news of the rebellion in Tongguan has reached Tongguan, and the generals in Tongguan have already gotten the news, but it is obvious that Fu Tong and others did not realize the severity of the situation, but thought that the civil strife in Jin was a good news, creating favorable conditions for the counterattack of the Shu army in the Central Plains.

After repelling the three-way attack of the Jin army, the defensive pressure on the front line of Guanzhong was significantly reduced, and Liu Yin also took the opportunity to reorganize the army.

In addition to the garrison forces in various parts of Yongliang, Liu Yin redivided the five field armies in the front, rear, left, right, and middle. The basic establishment of the Shu army remains unchanged, and the army of later generations often adopts the three or three different formations, the army of the Han Dynasty has always used the two-five formation, five people for one team, two for one team, five for a team, two teams for a tun, five tun for a song, two songs for one, five for a battalion, two battalions for an army.

Existence is reasonable, such a formation has been used from the Warring States Period to the Three Kingdoms Era, in the era of cold weapons, such a formation method is more scientific and reasonable, which can maximize the combat power of the army, so Liu Yin has not made any changes to this military system.

The only shortcoming is that the military level is the highest tactical unit (even more ridiculous at the end of the Han Dynasty, the department is the highest combat unit, think about how much a thousand people can do in troubled times?) An army with only 10,000 men may be able to play a role in general regional operations, but in large-scale campaigns, such an army is a bit thin, and it often requires multiple armies or even dozens of armies to conduct joint operations, and since there is no clear subordinate relationship between them, how to command these armies to fight together will become a difficult problem.

After the western expedition to Liangzhou, the number of troops under Liu Yin's command expanded rapidly, and the original five armies in the front and back and left and right could no longer meet the needs, so Liu Yin set up a corps at the army level, divided into three corps, left, middle and right.

The Governor of the Chinese Army Corps is concurrently served by Liu Yin himself, and the deputy governor is served by Huang Chonglai, and the Chinese Army consists of three armies: the Tiger Cavalry Army, the Tiger Infantry Army and the Yongan Army, respectively, by Fu Zhu, Gao Yuan and Luo Xi as the general of the Guardian Army, each army has two battalions, the Tiger Cavalry Army has jurisdiction over the Tiger Cavalry Left Battalion and the Tiger Cavalry Right Battalion, the Tiger Cavalry Army has jurisdiction over the Tiger Cavalry Left Battalion and the Tiger Infantry Right Battalion, and the Yongan Army has the Yongan Left Battalion and the Yong'an Battalion under the jurisdiction of the Yong'an Army.

The left corps consists of five armies: Wudang Fei Army, Yang'an Army, White Emperor Army, Longxi Army and Guanzhong Army, respectively by Zhang Le, Zhao Zhuo, Zhuge Shang, Deng Zhong, Ma Rong as the general of the army, each army is also under the jurisdiction of two battalions.

The main and deputy governors of the right army are served by Luo Xian and Wang Qi, compared with the mixed infantry and cavalry of the middle army and the pure infantry system of the left army, the right army is all composed of cavalry, and the naming of each cavalry army is no longer named after the place name or the original name, but named after the green dragon, the white tiger, the vermilion bird, the Xuanwu, and the unicorn, each army has 10,000 people, and there are also two battalions each, and the name of each battalion is arranged from one battalion to ten battalions. The generals of each army were Deng Pu, Fu Zhao, Lu Xun, Xun Kai, and Zhou Xulai.

Through the reorganization, the field corps of the Shu army was increased from five armies to thirteen armies, and the total strength of the army was also expanded to 130,000 people, which was as much as 100,000 more than when Liu Yin's Northern Expedition arrived in Longxi, and this number did not include the garrisons ranging from 2,000 to 5,000 per county, and the total number of troops in the entire Yongliang region even exceeded the total number of troops in the heyday of Shu Han. Compared with Wu, it is already not lagging behind, and the pattern of this world, with the stability of Shu's power in the Yongliang region, has quietly undergone qualitative changes.

What's more powerful is that the right legion of the Shu army is completely composed of cavalry, plus the tiger cavalry army in the middle legion, the number of cavalry of the Shu army has reached 60,000 people, close to half of the overall strength, for the past, this is completely unimaginable, this is also the great effect of the Shu army to capture the land of Yongliang, it is because Yongliang is the base of horse production, the Shu army has the opportunity to form such a large-scale cavalry force, and all the war horses are equipped with high bridge saddles, bilateral stirrups and horseshoe, the use of these new harnesses, Let the combat power of the Shu army reach a new level.

Yongliang and Bingzhou were the bases of the Wei and Jin dynasties to maintain their cavalry strength, and the Jin state, which lost its horse-producing land, would inevitably be greatly reduced, and the Jin army would lose one less war horse for every time it lost a war horse, and if it could not replenish the war horse, this army that was known as the invincible cavalry in the world in the past would be reduced to a second-class army.

The new pattern brings new challenges, now the Shu army has been reorganized, and after more than half a year of rest, the fighting spirit is high, the morale is high, and the desire for war is strong, once this tiger and wolf division enters the Kanto, it is bound to set off a new storm, and the trend of the world will also be completely changed. (To be continued.) )